Phreatoicoides. 131 



the outer side inwards. On the outer surface there are two 

 positions bearing setae, viz , at the base where there are about five, 

 and towards tlie distal end about twelve. On tlie inner surface, 

 midway between its union with the inner part and the distal end 

 there are about five setse. The t?i?7er lobe has its end somewhat 

 rounded and bearing three long plumose setfe, and near the inner 

 margin two single spines. Proximally on the inner surface there 

 are a few short setse, and along the outer surface are long sette 

 sparsely disposed, which point distally. 



Second Maxilla (Fig. 7). — The second maxilla consists of a basal 

 portion, produced at its inner distal end into a rounded elongate 

 lobe. External to this articulate two lobes, similar to each 

 other, which are slightly longer than the inner lobe and more 

 slender. Along the inner face of the inner lobe are numerous 

 long spinose setai, pointing distally, gradually decreasing 

 in length from the base upwards ; on the rounded distal end 

 are twelve or more long pectinated sette. The ends of the two 

 articulating lobes are obliquely truncate, with the face directed 

 inwards, and bearing numerous long awl shaped pectinated setae. 

 The remainder of the lobes are unclothed. 



Compared with P. australis the only marked difference is that 

 the present species has the lobes relatively longer in respect to 

 the base. 



The Maxillipedes (Fig. 8). — Compared with P. australis, the 

 maxillipedes are almost identical ; they however bear slightly 

 longer setae, and the terminal joint is longer and more pointed. 

 The coxos is short and irregular in outline ; the epipodite, arising 

 thereform, bears, on the outer side, a large flat plate reaching 

 beyond the end of the ischios ; it is broadly elliptical in outline, 

 with the margin entire. The basos is quadrangular, and about 

 three times as long as broad. Joined to the inner margin of the 

 basos for nearly its whole length, and running parallel with it, and 

 situated at right angles to its upper surface, is an accessory flat 

 plate, which leaves the basos proper near its distal extremity and 

 extends beyond as far as the end of the meros, and terminates in 

 a gradually narrowing and bluntly pointed end. In Fig. 8 this 

 plate is turned on one side and pressed down, and therefore 

 showing the inner lateral surface uppermost. Its dorsal ly 

 situated margin, (right-hand side in figure) up to the end of the 



