Species of genus Schizotheca Hincks (Bryozoa,Cheilostomata) described in the Atlantic‐Mediterranean region,with notes on some species of Parasmittina Osburn

Material held in collections, originally ascribed to the genus Schizotheca and originating from the NE Atlantic and Mediterranean, is revised. Two new species are described: Schizotheca carmenae sp. nov. from Azores and Portugal, originally cited as Strophiella tubigera [sic], and Schizotheca buski sp. nov. from Cape Verde and Brazil, originally cited as Schizotheca fissa. Schizotheca talismani, also from Cape Verde, is redescribed from original material and transferred to the genus Parasmittina. The Atlantic species Schizotheca tuberigera is redescribed and a new synonymy is established. Schizotheca aviculifera, from Morocco, is also redescribed and a lectotype designated. A lectotype is also chosen for Schizotheca fissa, type species of the genus. Schizotheca lepida, from north France, is considered to be an unrecognizable species.     

New Zealand chelonine braconid wasps (Hymenoptera)

The New Zealand braconid fauna is remarkable in that the only chelonine genus represented is Ascogaster; no member of the world-wide genus Chelonus has yet been found. The New Zealand species of Ascogaster are revised, keyed and illustrated. Of the 12 species, nine are new, two (crenulata Cameron, elongata Lyle) are redescribed and quadridentata, which was introduced into New Zealand for biological control of codling moth, was redescribed in a recent paper. One new synonym is established. The classification and biology of chelonines are briefly reviewed and the faunal relationships between Australian and New Zealand species of Ascogaster are discussed.     

Two new species of Clinocentrus Haliday (Hymenoptera: Braconidae) from Argentina,with notes on South American species

The Argentine species of the genus Clinocentrus Haliday are revised. Two new species are described, Clinocentrus mamull sp. nov. and Clinocentrus roigi sp. nov., which represent the southernmost records of the genus in South America. Additionally Clinocentrus nigripectus Enderlein is redescribed and a key to known South American species is provided.     

A new species of the nematode genus Thoracostoma from the Antarctic

Sixteen species of the encrusting bryozoan genus Chaperiopsis Uttley are described from material collected by Discovery Investigations. Six species are considered to be new to science. The type-species, Membranipora galeata Busk, 1854, is redescribed.     

A new species of Thelepus from Punta Arenas,Chile, together with a redescription of Streblosoma comatus (Grube) and Thelepus pequenianus Augener (Thelepinae: Terebellidae)

Thelepus comatus (Grube) is redescribed and transferred to the genus Streblosoma. All other records of T. comatus have been examined and described as a new species Thelepus ambitus n. sp. In addition T. pequenianus Augener is redescribed and other records confirmed or transferred to the correct species.     

Review of the genus Chauliopleona Dojiri and Sieg, 1997 (Crustacea,Peracarida, Tanaidacea) and description of three new species

The tanaidacean genus Chauliopleona Dojiri and Sieg, is reviewed. A generic diagnosis is given and the type species Chauliopleona dentata Dojiri and Sieg, is redescribed. Three species, Leptognathia armataHansen, , L. amdrupii Hansen, and L. hastata Hansen, are placed into this genus. Three new species, one from the Angola Basin, one from the deep sea of the tropical East Pacific and one from Antarctica are described. A key for the genus is provided.     

A revision of the genus Ophiambix (Echinodermata: Ophiuroidea) including the description of a new species

The genus Ophiambix is revised and problems at higher taxonomic levels are discussed. The species Ophiambix aculeatus, O. meteoris and O. devaneyi are redescribed (based on new characters), and a new species O. epicopus is described from the Kermadec Islands, South Pacific. A pictorial key is presented to aid identification.     

Revision of the tanaidomorphan deep-sea genus Tanaella (Crustacea: Tanaidacea)

The genus Tanaella is revised and the generic diagnosis redefined. Both genders of the type species, Tanaella unguicillata and T. ochracea are redescribed. Two new species, T. prolixcauda and T. mclellandi, are described from deep-sea localities in the Gulf of Mexico. Male Tanaella possess fully functional mouthparts resembling, but not identical to, those of the females. Distribution and ecological information are given for all species in the genus and a key to Tanaella is also given.     

Oribatid mites of Liebstadia (Acari: Oribatida: Scheloribatidae) from Mongolia,with notes on taxonomy of the genus

Three new species of oribatid mites belonging to the genus Liebstadia are described from Mongolia. The new species are characterized by the poorly developed pteromorphae; the club-shaped head of the sensilli; the absence of the dorsosejugal suture; the dorso-ventral thickness, and the length and arrangement of notogastral setae. In addition, L. similis (Michael, 1888) is redescribed and recorded for the first time in Mongolia. Protoribates serratomarginatus Mahunka, 1983 is synonymized with L. similis. A key to the known species of the genus Liebstadia is given.     

Taxonomy,phylogeny and distribution of the longicorn beetle genus Allotisis Pascoe (Coleoptera: Cerambycidae: Phoracanthini)

The genus Allotisis Pascoe is revised. Diagnosis of Allotisis is given, three known species are redescribed and six species are described as new : A. repleta, A. notabilis, A. rara, A. labyrinthina, A. monteithi and A. furva. All species are from Australia. Thoris moerens Blackburn is synonymous with A. unifasciata. A key to the nine species is provided. Phylogenetic analysis suggests that this genus be divided into two species groups, monteithi-group and unifasciata-group. Several subgroups are also identified. Biogeographic distribution of these species groups and subgroups is discussed.     

A survey of the genus Geometra Linnaeus (Lepidoptera,Geometridae, Geometrinae)

The type genus of the family Geometridae, Geometra Linnaeus, is reviewed. In addition to the 16 species known worldwide, two new species are described: Geometra neovalida sp. nov. from China, and Geometra burmensis sp. nov. from Burma (Myanmar). All the known species are redescribed. Genitalia of all species are described and illustrated, most for the first time. Generic characters based on all species are summarized. The monophyly of the genus and its relationship with allied genera are reviewed and discussed in detail. Most species fall into two species groups, named the papilionaria and smaragdus groups, on the basis of the morphology of the male genitalia. Biological information is provided where available. Illustrations of moths and genitalia are presented.     

LIX.—Freshwater Copepoda and hydrogen ion concentration

Summary

The genus Tristria is redescribed and defined, and a key is given to the known genera of the subfamily Tropidopolinae. A key to the nine species included in the genus is also provided, and all the species are diagnosed and notes given on their distribution.     

Considerations about the genus Pentoniscus Richardson, 1913 (Crustacea: Isopoda: Oniscidea) with description of a new species

The status of the neotropical genus Pentoniscus Richardson, 1913 is reconsidered and a diagnosis of this genus is given. It is shown that Pentoniscus Richardson, 1913 is a valid genus and not a synonym of Philoscia Latreille, 1804 as discussed by Schultz (1968). The type species, Pentoniscus pruinosus Richardson, 1913 is redescribed and for the first time figured in detail. A new species of Pentoniscus Richardson, 1913 is described from Costa Rica, Central America, which differs remarkably from its congeners in being unpigmented and blind.     

A revision of the genus Heliconema Travassos, 1919, Physalopteridae (Nematoda)

Summary

It is accepted that the genus Ortleppina Schulz, 1927, is a synonym of the genus Heliconema Travassos, 1919.

Five valid species of Heliconema are recognized: H. heliconema, H. ahiri, H. baylisi, H. brevispiculum and H. longissima.

A new species, H. baylisi is described, and H. heliconema, H. brevispiculum and H. longissima are redescribed.     

The genus Coralaxius redefined,with the description of two new species (Crustacea: Decapoda: Axiidae)

The genus Coralaxius is rediagnosed, and the type species C. nodulosus (Meinert, 1877), the holotype of which was found to be identical with C. abelei Kensley and Gore, 1982, is redescribed. The two new species of Coralaxius are described, viz. C. galapagensis from the Galapagos Islands, and C. indopacificus from Fiji and the Comoro Islands. On the basis of carapace, gill and appendage characters, it is concluded that C. indopacificus is more primitive than the other two species. The genus is thought to have had a tethyan distribution, with the eastern Pacific representative being cut off from the western Atlantic form with the raising of the Isthmus of Panama.     

A revision of the south Asian sisorid catfish genus Sisor (Teleostei: Siluriformes)

The south Asian sisorid catfish genus Sisor is revised. Three new species are described in this study: S. chennuah from the Brahmaputra River drainage, and S. rheophilus and S. torosus from the Ganges River drainage. The body depth, snout length, eye size, shape of the nuchal plate and the numbers of pectoral spine serrations and lateral line ossicles are found to be diagnostic characters for the species. Sisor rabdophorus is redescribed and a neotype designated.