396 



irregularly and finely serrate and the extremities bearing only 

 two long setae in each case ; the inner lobe is much broader and 

 bears on its rounded extremity about a dozen long stout 

 setae, and on the inner surface a small tuft of fine hairs. The 

 maxilliped (fig. 7) is similar in general shape to that of S. 

 australiensis ; the first joint of the palp is very short, bears 

 a few spines on its surface, the second is much the longest 

 and has the inner margin produced and bearing a regular 

 row of stout setae : there are also four setae in a line on its 

 outer surface and some fine hairs near the outer margin : the 

 terminal joint is rather more than half the length of the 

 second and bears a tuft of stout setae at its extremity. 



The first pair of legs is shown in fig. 8 ; they are, as 

 usual, modified into powerful subchelate gnathopoda, the 

 ischial joint is particularly long and slender, the carpus is 

 produced inwards into a long acute process bearing two 

 spinules, the palm is armed with the characteristic spinules 

 and the finger is long, extending along the whole length of the 

 palm. In the second pair of legs (fig. 9) of the male the 

 ischium is very long, the merus and carpus subequal, propod 

 narrowing distally, and with the palm armed with two rows 

 of six stout spinules each. In this appendage, as well as in 

 the first pair, there is a pretty close resemblance to the 

 corresponding appendage of S. yalllda as figured by Beddard. 



The sternal surface of each of the first three pleon seg- 

 ments is produced in the median line into a stout tooth 

 directed backwards ; the tooth on the first segment is the 

 largest and overlaps the next, just as in S. australiensis. 

 These teeth appear to be equally developed in male and 

 female. 



The caudal plate has the extremity transverse and 

 straight, but with the lateral margins slightly bent in, so 

 that the posterior margin may appear curved when viewed 

 from behind. The uropods have the outer branch about two- 

 thirds the length of the inner one, the end being concave ; 

 the inner branch has the extremity rounded. 



Serolis australiensis, Beddard. 

 Fig. 10. 



Serolis australiensis, Beddnrd : 1884, I.e., p. 69, pi. vi.,. 

 figs. 3-6; Whitelegge: 1901, I.e., p. 237. 



South Australian coast (precise locality not given), 1 

 specimen (Dr. J. C. Verco). 



This specimen is a male, 10 mm. long and 8 mm. broad, 

 and agrees well with Beddard ? s description in having the 

 whole of the dorsal surface covered with great numbers of 

 rounded tubercles, the tubercles being very distinct on the 



