
HALE—AUSTRALIAN CUMACEA 393 
Second pedigerous somite dorsally longer than any of the others, its anterior 
pleural lobes overlapping the first, which is relatively quite long; third and fourth 
somites decidely produced backwards, the second and third peraeopods rather 
widely separated. 
Pleon three-fourths as long as cephalothorax; fifth somite fully one-fourth 
as long again as sixth, which is slightly widened posteriorly, where it is quite as 
wide as long; telson plump, subcordate, shorter than sixth somite, with no post- 
anal portion and with no discernible terminal] or lateral spines. 
oc, lobe 

Fig. 25, Gynodiastylis attenuata, paratype male; oc. lobe, ocular lobe ; ant., first and seeond 
antennas; prp., first to third peracopods; urop., uropod with fifth and sixth pleon somites, and 
telson (all % 114), 
First antenna stout, with first joint of peduncle not much longer than second 
and third together; third joint little longer than second; flagellam two-jointed, 
as long as second joint of peduncle, and twice as long as the apparently single- 
jointed accessory lash, Second. antenna shorter than carapace, slender, with 
relatively short peduncle and ten-jointed flagellum, which is fully twice as long 
as peduncle. 
First peraeopod barely extending beyond level of apex of pseudorostrum when 
fully extended, the basis little longer than rest of limb; carpus about one-fourth 
length of basis, subequal in length to propodus, one-fourth as long again as 
dactylus, and equal in length to ischium and werus combined. 
Second peraeopod with exopod fully as long as basis, which is broad and 
is two and one-half times as long as the abbreviated terminal joints together ; 
ischium distinct, propodus much shorter than, dactylus, and merus about as long 
as propodus and dactylus together. 
