New deep-sea Nannastacidae (Crustacea,Cumacea) from the Eastern Pacific collected by R.V. 'Vema'

Five new species of Procampylaspis Bonnier, 1896 (P. cornuta, P. jonesi, P. ledoyeri, P. muradianae and P. spinosa) and a new genus and species, Vemacumella heardi, are described from material collected by R.V. ‘Vema’ from the eastern Pacific coast of South America from 1958 to 1962. The new species of Procampylaspis are compared to congeners from the Atlantic. Vemacumella n. gen. is closely related to Styloptocuma Bacescu and Muradian, 1974, but also possesses a few characters in common with Cumella Sars, 1865; Bate, 1856.