
HALE—AUSTRALIAN CUMACEA 133 
present. The carapace is widest across the lower of the anterior tubercles. Pseudo- 
rostval lohes not meeting in front of ocular lobe. Antennal notch wide and angle 
subacute. Ocular lobe narrow with distinct lenses. 
Exposed pedigerous somites, with exception of third somite which is ex- 
tremely short dorsally, each with a spinose carina; on the fourth and fifth this is 
raised to form a thin serrated erest, below which is a spinose dorso-lateral oblique 
ridge. 

Fig. 52. Cyclaspis cana, type male; A, basis of first peraeopud; B, GC and D, seeond, fourth 
and fifth peraeopods; E, telsonie somite and uropod; El, terminal half of rami of uropod, (A and 
B, X 25; Band Hl, x 64; Cand D, x 40). 
First to fifth pleon somites each with a median carina, a spinose dorso-lateral 
carina on each side, and a few scattered spinules; each of the three ridges ter- 
minates in a small projection at the hinder margins of the somites; telsonie somite 
with a median carina, which bifurcates at {wo-thirds of length, an elevation mark- 
ing the point of separation, 
Basis of first. peracopods with two apical plumose setae (rest of limb missing). 
Second peraeopod with basis little longer than remaining joints together; 
merus fully as long as propodus and dactylus together, and longer than carpus ; 
dactylus with terminal spine (which is flanked by two much shorter spines) longer 
than mers; apex of carpus with a still longer spine, and one which is half as 
long (fig. 52, B). 
Third to fourth peraeopods slender, with long subterminal setae, two being 
on carpus (fig. 5, G), which is unusually elongate. 
Uropods with endopod a little longer than exopod, which is subequal in length 
to pedunele, and to telsonic somite; inner marvin of peduncle with slender setae; 
endopod with a comb-like series of spines at middle of length of inner edge, fol- 
lowed by a row of stonter downwardly directed spines and preceded and partly 
overlapped by finely-serrate long setae; there is a separate short, stout spine near 
