Book Description

Excerpt from The Cumacea of the Siboga-Expedition The collection of Cumacea obtained by the "Siboga" Expedition, although not very large, is of considerable interest and importance. Eleven species, all of which except one are regarded as new, are discussed below, while some eight additional species of which the material is considered insufficient for exact determination, are referred to under their respective genera. Several of the species are of exceptional size and of striking characters. One is referred to a new genus (Pseudodiastylis) which is in some respects intermediate between the families Diastylida: and Lampropid (T another (Heferociniia Weberi), one of the largest Cumaceans hitherto described, is only provisionally referred to the genus Hctcrocitiua and ma)- ultimately require to be removed to a new genus; while a third (Cyclaspis Sibogcs) helps to diminish the narrow space separating the genera Cyclaspis and Bodotria. The discovery of a second species of Paradiastylis has revealed the existence of a somewhat remarkable difference between the sexes of this eenus. Our knowledge of Cumacea from extra-European seas is still so exceedingly fragmentary that it seems unnecessary to comment on the geographical relations of the species here described. No Cumacea have hitherto been recorded from the area traversed by the Siboga. Two species, however, were obtained by the Challenger at Samboangan, Philippine Islands, and one of them, Natinastacus siiuiiii, has been identified in the present collection. The Challenger also dredged two species in Flinders Passage, between Australia and New Guinea, and one of these, Cyclaspis exsculpta Sars, is closely allied to the form described below under the name C. perscttlpta. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.