270 ATJSTBALIAN MAIACOSTBACA. 



hairs. Anterior gnathopoda with the propodos long and narrow ; 

 the meros, carpus and propodos fringed with long slender hairs. 

 Posterior gnathopoda longer and more slender than the anterior 

 pair, bordered like the latter with numerous long delicate hairs ; 

 ischium and meros small ; carpus and propodos of nearly equal 

 length — the latter tapering distally ; dactylos small. Pereiopoda 

 short, stout ; three anterior pairs subequal, fourth and fifth longer. 

 Fourth pair of pleopoda armed on the protopodite and each ramus 

 with a row of spines which are acute and slightly curved at the 

 tip ; fifth pair shorter than the fourth, armed with similar but 

 shorter spines ; sixth pair with the rami short, conical, unequal, 

 the outer armed with a few short stout spines, the inner terminated 

 by a few hairs. Telson cleft, armed with short blunt spines. 

 Colour dark grey. Length 3£ lines. 



Port Jackson ; under stones at low- water mark. 



G-enus Podocebtjs, Leach. 



Eyes small, situated on a lobe between the superior and inferior 

 antennae. Superior antennae having a secondary appendage, 

 which is generally very minute. Inferior antennae robust, the 

 flagellum consisting of but few articuli and as stout as the 

 peduncle, the hairs towards the extremity being developed into 

 spines, which increase in strength as they approach the apex, 

 where they become curved. Second pair of gnathopoda having 

 the propodos (in the male) much larger than that of the first 

 pair. Two anterior pairs of pereiopoda short, having the basa 

 very broad. Posterior pair of pleopoda having two rami, one of 

 which is armed with one or more hooked spines. Telson 

 squamiform. 



471. Podooerus australis. 



Podocerus australis, Haswell, 1. c, p. 338, pi. xxi., fig. 8. 



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

 cephalon and first four segments of the pereion, armed below with 

 long hairs; flagellum subequal with the last segment of the 

 peduncle, obscurely multiarticulate. Inferior antennae longer 

 than the superior pair, very stout ; flagellum much shorter than 

 the last segment of the peduncle, obscurely multiarticulate, 

 secondary appendage uni-articulate. Anterior gnathopoda small, 



