18 Proceed! ay* of the Royal Society of Victoria. 



Second Maxilla (Fig. 6). — The basal part is produced at its 

 inner distal end into a rounded, elongate lobe. External to this 

 are two processes articulated to the basal joint. The inner 

 margin differs in form from that of P. australis, and its outline 

 is represented in the figure. 



The end of the inner process carries a large number of seta? of 

 two kinds ; first long, plain seta? with curved, almost hooked 

 extremities, and secondly, pectinate seta?. The inner margin has 

 a fringe of long, plumose seta?. The whole surface bears sparsely 

 scattered, large, pectinate seta?. 



The two articulating lobes are slightly longer and much more 

 slender than the inner lobe and are flattened from side to side. 

 Each terminates in two stout, pectinate spines. The inner lobe 

 also bears two simple spines. Both lobes carry a large number 

 of pectinate seta? of varying length, which are more numerous on 

 the inner than the outer process. 



Maxillipedes (Fig. 7). — Coxos distinct and broader than long. 

 The epipodite is relatively larger than in P. australis. The outer 

 edge bears a fringe of very numerous short seta?. The basos is 

 about half as long again as broad, but not so long relatively as in 

 P. australis. From the inner side of the basos distally arises a 

 flat plate, which reaches as far forwai'd as the middle of the 

 carpopodite. This plate, owing to the broadening of the carpo- 

 and meropodite, cannot be seen from the outer side. The end of 

 this plate is rounded and bears a number of strong, pectinate 

 seta?, which are continued for some distance along the outer 

 margin. The inner margin is fringed by a series of long, plumose 

 seta? and at the basal part of the outer margin are three strong 

 seta?, which are not hooked as they ai-e in P. australis. 



The ischios is short and rounded. The meros has its outer 

 angle produced into a long process which runs upwards by the 

 side of the carpus. The carpus is broadly subtriangular and 

 very different in appearance from that of P. australis. The 

 propodos is subtriangular, and the dactylos is roundly oblong. 

 The whole appendage is strongly setose. 



First pereiopod. The basos and ischios are much as in P. aus- 

 tralis. The meros is subtriangular, the anterior side being 

 produced into a long, strong process, which terminates in a single 

 spiniform seta. The face turned towards the propodite is 



