
120 RECORDS OF THE S.A. MUSEUM 
second and fourth almost tooth-like; second to fifth somites successively increas- 
ing in length and with infero-lateral portions more or less backwardly produced. 
First antenna with basal joint longer than second and third together ; flagel- 
lum shorter than second or third joints, which are subequal in length. 
Third maxilliped with basis about two and three-fourths times as long as 
remaining joints together ; outer apical angle rounded, reaching to level of middle 
of length of merus, which is more than twice as long as carpus; dactylus, propo- 
dus and carpus subequal in length. 

Fig. 41. Cyclaspis mawsonae, paratype male; A, lateral view; B, dorsal view of carapace; 
C, anterior portion of carapace; D, calcification of carapace (A and B, X 15; C, X 40; D, x 72). 
First peraeopods with distal end of carpus reaching beyond antennal angle; 
basis nearly one-half as long again as remainder of limb, with apex produced and 
with two plumose setae; merus half as long again as ischium and more than half 
as long as carpus which is a little shorter than propodus and longer than dactylus. 
Second peraeopod with basis a little longer than rest of limb, with merus 
almost as long as carpus and propodus together; dactylus almost as long as 
carpus and one-third as long again as propodus, with a stout terminal spine much 
longer than itself and two shorter robust spines; ischium and merus each with 
a plumose seta; carpus with two stout unequal spines, the longer serrate, and 
reaching to level of apex of dactylus. 
Basis of third peraeopod as long as rest of limb, and with long plumose 
setae on inner margin; ischium with two setae; merus equal in length to carpus 
and with one subapical seta; carpus about, one-half as long again as propodus, 
and bearing two subapical setae (almost slender spines) and a spine which 
reaches level of apex of dactylus; propodus with a similar but shorter spine, also 
