
HALE—AUSTRALIAN CUMACEA 75 
picta group. 
Carapace moderately compressed with back rather rounded and median carina faint, par- 
ticularly on posterior half; pseudorostral lobes meeting for an appreciable distance in front of 
the large ocular lobe and rather narrowly truncate anteriorly. 
Apices of both rami of uropods simple, or both with spines, or exopods with mucrones. 
The carapace is inclined towards the subglobose in the female of costata, picta and the four 
Australian species. 
CYCLASPIS GIBBA sp. nov. 
Ovigerous female. Integument smooth, finely reticulate and having the 
appearance of very shallow pitting; thin and not calcified. 
Carapace relatively large, more than one-third of total length of animal, 
vreatest width, which is in posterior half, is equal to the depth and two-thirds of 


Fig. 4. Cyclaspis gibba, type female; A, lateral view and B, cephalothorax from above. 
C, Lateral view of paratype subadult female (xX 32). 
length; dorsum with a sharp, longitudinal median carina, emarginate at about 
five-sixths of length and slightly more markedly elevated posterior to the incision ; 
there is a faint depression on each side of the anterior half of the dorsal carina. 
Antennal notch large and wide, and antennal tooth subacute. Pseudorostral 
lobes meeting in front for a short distance (about one-fourth of length of ocular 
lobe). The ocular lobe (as wide as long) is elevated, barely constricted basally, 
and is strongly pigmented, but with the lenses (apparently nine or so) not dis- 
tinet ; when the animal is viewed from the side the eye is very prominent. 
The whole cephalothorax is ovoid when seen from above (fig. 4, B). 
Pedigerous somites together half as long as carapace; first wholly concealed ; 
second to fourth with distinet dorsal carina and fifth with feeble dorso-lateral ca- 
rinae also; second somite overhanging the third in the mid-line and with the 
dorsal ridge almost crest-like, arched and sloping down from the dorsal outline 
of carapace. 
