268 AUSTRALIAN HALACOSTRACA. 



than the anterior pair, with the propodos broad, irregularly 

 ovoid ; the palm oblique, deeply excavated, its border waved, 

 defined posteriorly by a strong tooth. Length eight lines. 

 Port Jackson. 



468. Amphithoe setosa. 



Awphitlboe setosa, Haswell, 1. c, p. 270. 



Eyes small, round, reel. Superior antennae nearly as long as 

 the body ; first two segments of the peduncle subequal, third 

 about one-third of the length of the second ; flagelluzn twice as 

 long as the peduncle. Inferior antennae nearly as long as the 

 superior pair ; ornamented with long hairs ; flagellum as long as 

 the last two segments of the peduncle. Anterior gnathopoda 

 rather large ; meros produced into an acute process at its inf ero- 

 distal angle ; carpus sub-triangular, longer than the meros or 

 propodos ; propodos ovate ; palm oblique ; undefined. Posterior 

 gnathopoda larger than the anterior pair, fringed with long 

 slender hairs ; meros and carpus short, both slightly produced at 

 the infero-distal angle ; propodos more than twice as long as the 

 carpus, rather longer than that of the anterior pair, ovate, 

 swollen ; palm oblique, defined by a small tooth. Colour light 

 brown with minute black dots. 



Bock-pools at Botany Bay. 



Genus Xenocheira, Haswell. 



Body slender. Coxa? small. Superior antenna) very long, 

 longer than the inferior pair, with a secondary appendage. 

 Mandibles with an appendage. Both pairs of gnathopoda non- 

 subchelate, armed with very long hairs ; carpus of posterior pair 

 broad, plate-like, applied to the anterior (dorsal) border of the 

 meros. Posterior pleopoda biramous. Telson simple. 



469. Xenocheira fasciata. A.M. 



Xcnocheira fasciata, Haswell, 1. c, p. 272, pi. xi., fig. 0. 



Eyes round. Superior antennae as long as the cephalon and 

 pereion ; first joint of the peduncle stout, rather longer than the 

 cephalon ; second rather longer and narrower than the first ; 

 third not one-half of the length of the second ; ilagellum longer 

 than the peduncle, slender ; appendage short, of five segments. 



