20 Proceedings of the Royal Society of Victoria. 



Second Pleopod. — The second pleopod is larger than the first 

 pleopod. The endopodite consists of two parts. First the penial 

 filament. This lies on the inner side and does not extend so far 

 as the first joint of the exopodite. It curves slightly outwards 

 and in transverse sections has the form of figure 8. A few short, 

 stout setae are present along the inner margin proximally. 



The second portion is similar to the endopodite of the first 

 pleopod except that the proximal lobe is not so well marked. 



The exopodite consists of two joints. The proximal one has a 

 process extending along the margin of the base and bears a fringe 

 of simple setae. The second joint is short and lanceolate. Its 

 margin carries about forty-four simple setae. 



Third Pleopod. — The third pleopod has the endopodite similar 

 in form to that of the first, except that the proximal lobe, though 

 present, is not so large. The exopodite is similar to that of the 

 second, except that the basal process is smaller. The protopodite 

 gives off' on the outer side a lobe which, according to Dr. Chilton, 

 perhaps represents an epipodite, the margin of which is fringed 

 with long, simple setae. 



The Fourth and Fifth Pleopods. — These are similar in general 

 shape to the third, but the epipodite gradually increases in size 

 from the third pleopod backwards. 



Uropods. — The uropods do not project backwards beyond the 

 pleon. The basal joint is as long as the longer of the two rami. 

 and very stout. On its inner surface it beai-s, about half-way 

 along its length, a strong spinose seta, and a few smaller seta* 

 are present at intervals. Its distal extremity carries a single 

 strong and one or two smaller spinose setae, no pectinate ones 

 being present in this position as in P. australis. 



Its upper surface is broad and concave, and at the inner angle 

 it is produced into a well-marked process terminating in a strong, 

 spinose seta. A few large and small setae are present along the 

 upper inner margin. 



The two rami are strong and curved : the inner is considerably 

 longer than the outer, and both bear a few strong setae which are 

 not arranged in groups. The points of the rami are dark brown 

 in colour. 



