214 AUSTEALIAN HALACOSTEACA. 



301. Talitrus sylvaticus. A.M. 



Talitrus sylvaticus, Haswell, Proc. Linn. Soc. N.S.W., Vol. iv., 

 p. 245, pi. vii., fig. 1. 



Superior antennae nearly equal in length to the cephalon 

 and first segment of the pereion ; first segment of the peduncle 

 compressed ; second segment the longest ; third very short ; 

 ilagellum rather shorter than the peduncle. Inferior antenna) 

 equal in length to the cephalon and pereion ; peduncle with 

 three articuli visible, the third nearly twice as long as the 

 second ; flagellum longer than peduncle, finely fringed with cilia. 

 Mandibles powerful, very deep ; furnished with a large and 

 prominent molar eminence crossed by about a dozen dentary 

 ridges; cutting edge armed with four teeth, that nearest the 

 molar surface bifurcated, the next two simple, prominent, the 

 fourth inconspicuous ; between the first of these teeth and the 

 molar eminence are several pointed, curved, ciliated spines. 

 Maxillipedes resembling somewhat those of T. locusta; the plate 

 of the first articulation armed with three short blunt teeth, that 

 of the second articulation ending in a single tooth ; carpus and 

 propodos with one or two seta\ Anterior gnathopoda pedif orm, 

 the propodos tapering distally. Posterior gnathopoda imper- 

 fectly subcheliform ; the carpus and propodos long and narrow 

 (longer in the female than in the male), the short dactylos 

 situated at a little distance from the extremity of the propodos. 

 Anterior pereipoda subequal. Pereiopoda of the third pair 

 much shorter than the fourth and fifth ; bases of fifth pair broad, 

 finely serrated along the posterior margin. Last pair of pleopoda 

 short. Telson consisting of a disc-like, dorsally-concave plate, 

 bordered with hairs, and cleft in the middle line posteriorly. 

 Colour usually dark slate, occasionally dull yellow. Length 

 5 lines. 



N. S. Wales, in woods and scrubs. 



392. Talitrus afflnis. A.M. 



Talitrus affinis, Haswell, 1. c, vol. v., p. 97, pi. v., fig. 1. 



Distinguished from T. sylcaticus, which it otherwise very 

 closely resembles, by the form of the posterior gnathopoda the 

 ineros having a truncate process below, the carpus having its 



