
HaLE—AUSTRALIAN CUMACEA 371 
three distal joints together; carpus little longer than propodus, with the distal 
setae (one of which is very stout) subequal in length and not quite reaching to 
tip of the elongate dactylus. 
Uropod with pedunele nearly half as long again as telson, not much longer 
than the subequal rami, and with a row of short, closely set spines (thirteen in 
number) on distal two-thirds of inner margin; endopod three-jointed, also with 

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Fig. 8. Gynodiastylis robusta, paratype ovigerous female; ant., first antenna and upper 
lip ( 95); mxp, and prp., third maxilliped and second to fourth peraeopods (X 50; distal joints 
of fourth leg, X 95); urop., uropod with Ath and sixth pleon somites, and telson (% 50), 
inner spines numerous, there being eleven, five and three on the respective seg- 
ments; first, jomt as long as combined lengths of subequal second and third ; ter- 
minal spine less than half length of ramus and not quite as long as longer of the 
very unequal distal spines of exopod, 
Colour white. Length 4:4 mm. 
Lec. Tasmania: off Babel Island, 0-50 metres (‘‘Warreen’’ Station 29, 
Jan., 1939). Type in South Australian Museum, Reg. No. ©. 2724. 
It is unfortunate that the terminal joints of the first peraeopods are missing 
in the two available females, for the species comes close to the males described 
under dilatata. The uropod of the female recorded above, however, is much more 
richly armed than is that of dilatata, while the peduncle of that appendage is a 
little longer than the endopod instead of shorter than it, the sculpture of the cara- 
pace is somewhat different, the size is considerably larger, ete, The difference in 
number of segments in the endopod could be sexual. 
G. robusta may prove to bear the same relationship to dilatata as does Dimor- 
phostylis subaculeata to its var. praecom (IIale, 1945, pp. 183, 185, fiz. 7-9) 
