OCR Text |
Show 1903.] NEW PARASITIC COPErODS. 105 lobe-like processes on either side ; abdomen one-fourth length of whole, biarticulate, tapering; no distinct antennae or thoracic limbs; mouth placed on under surface, with minute maxillae ; external ovaries as elongated filiform sacs containing ova in a single series. rf. Pigmy. C hondrocarpus reticulosus, sp. n. (Text-fig. 11, A-G.) Ilctb. Zanzibar : from large Pleurobranchid. Length 12 mm., breadth 4 mm. 2 . Cephalothorax indistinctly segmented, elongated, tapering, dorsally convex, laterally produced into 4 rounded truncated processes; the 4th pair being most widely separated and the smallest; the whole having a peculiar reticulate appearance from the network of ramifying tubules; anterior extremity rounded; no visible antennae; mouth as a papilla placed between the 1st pair of processes ; upper lip triangular; only one pair of maxillae and mandibles (?) could be made out, each terminating in minute claws. No thoracic limbs; there is a short genital segment, or ring, from which spring the long filiform ovaries. Abdomen indistinctly biarticulate, tapering, without caudal plates or setae. $ . Pigmy. One was seen attached to the last abdominal segment but was partially hidden, the bifid articulate caudal extremity only being visible. Text-fig. 11. Chondrocarpus reticulosus gen. & sp. n. A. Dorsal surface. B. Lateral view. C. First segment and moutli-organs. D. One of the lobes showing reticulate appearance. E. Second maxilliped. F. Abdomen showing fixed $ . G. Posterior extremity of $ . H. Chondrocarpus sp. ^ : dorsal surface (specimen incomplete). C hondrocarpus sp. (Text-fig. 11, H .) A specimen of a second species of this genus was taken from a |