
126 RECORDS OF THE S.A. MUSEUM 
First pedigerous somite concealed ; second deep, short and elevated dorsally ; 
fifth longer than third and fourth somites. 
First five somites of pleon with well-developed articular processes; all but 
fifth somite subequal in length. 
A median dorsal carina (perhaps better described as a defined series of 
short median spines) extends along the last three thoracic somites and the pleon 
almost to the end of the telsonic somite, where it bifurcates; the exposed pediger- 
ous and anterior pleon somites bear lateral expansions; these are merely slight 
spinose elevations on all but the last pedigerous and first pleon somites, where 
they form wing-like projections. 

Fig. 46. Cyclaspis aspera, type male; A, first antenna; B, third maxilliped; C, D and &, first, 
second and fourth peraeopods; F, uropod (A and D, X 84; B and C, X 26; E, X 50; F, x 35). 
First antennae with second segment stouter and longer than third; second 
and third together three-fourths as long as stout basal joint. 
Basis of third maxillipeds more than twice as long as rest of limb, with outer 
apical portion reaching forward almost to distal end of merus and capped with 
plumose setae; carpus as long as the slender dactylus, and twice as long as the 
propodus; merus, including its apical expansion, as long as carpus and propodus 
together. 
First peraeopod slender, much longer than carapace, its merus reaching 
forward to level of antennal tooth; basis almost as long as rest of limb, with 
margins serrate, with a small but distinct apical process, and with a plumose 
apical seta; merus, carpus, propodus and (to a less defined extent), dactylus 
with serrated edges; ischium with short spines at outer part of apex; merus half 
as long as carpus, which is longer than the dactylus and shorter than the propo- 
dus. 
Basis of second peraeopods longer than rest of limb; merus longer than 
