
110 RECORDS OF THE S.A. MUSEUM 
tinctly less than twice as long as deep, compressed, its width less than depth and 
barely more than half its length; there is a thin median longitudinal carina for 
whole length, flanked at anterior half by a low depression on each pseudorostral 
lobe, their hinder termination not marked by an emargination of the dorsal pro- 
file. Antennal notch rather widely open and with a short, shallow groove leading 
back from it; antennal tooth subacute, and no antennal ridge. Pseudorostral 
lobes truncate and a little sinuate in front, just meeting in advance of eye-lobe. 
Ocular lobe large and prominent, blackish, as wide as long, rounded, constricted 
at base, and with eleven large lenses. 


Fig. 33. Cyclaspis nitida, type male; A, lateral view; B, carapace and anterior pedigerous 
somites from above. Paratype male; C. anterior portion of carapace; D, telsonic somite from 
the side (A and B, X 27; C and D, X 67). 
The four exposed pedigerous somites together are more than half as long 
as the carapace, each with a low median carina; dorsal edge of second rounded, 
continuing slightly obliquely the curve of the upper edge of carapace; third and 
fourth as long as expanded pleural portions of second; last three somites with 
the sides rather conspicuously tumid on posterior half. 
Pleon somites stout, each with a low median carina; obsolete dorso-lateral 
earinae on first to fifth somites, which have the sides tumid fore and aft; telsonic 
somites subequal in length to first to fourth and with the dorsal notch deep. 
Basis of third maxillipeds with rather narrow apical lobe, and ischium re- 
latively long. 
First peraeopod with carpus reaching just beyond level of antennal angle; 
basis fully one and one-half times as long as rest of limb, with a long external, 
plumose seta (reaching well beyond distal end of merus) and a tiny tooth-like 
projection, at apex; the propodus is subequal in length to carpus (barely shorter 
than it); dactylus rather short, two-thirds as long as propodus, and equal to 
longest terminal seta. 
