246 AUSTEALIAF MALACOSTBACA. 



their ventral border armed with, serrations beset with fasciculi 

 of fine hairs ; propodos rather longer than broad, palm transverse, 

 not defined. Posterior gnathopoda with the carpus triangular, 

 as long as the propodos, which is oblong, more than twice as 

 long as broad, twice as long as the propodos of the anterior pair, 

 with the palm oblique, undefined ; both carpus and propodos 

 bordered ventrally with a row of hair-bearing serrations. Third 

 pair of pereiopoda rather shorter than the fourth and fifth, all 

 three bordered with setae. Rami of posterior pleopoda stylif orm. 

 Telson triangular, pointed. Length 4£ lines. 



Kiama. 

 437. Pherusa Australis. 



Pherusa Australis, Haswell, 1. c, Vol. v., p. 103, pi. vii., fig. 1. 



Six anterior segments narrow ; the four following broad. 

 Cephalon with a small rostrum. Superior antenna? nearly as 

 long as the cephalon and pereion ; first two joints of the 

 peduncle stout ; third small, scarcely distinguishable from the 

 articuli of the flagellum ; flagellum slender, about twice as long 

 as the peduncle. Inferior antenna? slightly longer than the 

 superior pair ; flagellum scarcely twice as long as the peduncle. 

 Anterior gnathopoda with the propodos ovate, the palm oblique, 

 undefined, armed with short seta?. Posterior gnathopoda larger 

 than the anterior pair, the propodos ovate, dilated proximally 

 armed with a few short seta? and hairs towards the palmar 

 border ; palm oblique, undefined. Fifth pair of pereiopoda 

 much longer than the preceding pairs ; the dactylos elongate, 

 slender, straight. Last pair of pleopoda with the rami lanceo- 

 late, acute, each armed on the inner border with three setae. 

 Length i in. 



Botany Bay. 



G-enus Eusirits, Kroyer. 



Cephalon not rostrated. Pereion and pleon compressed, much 

 resembling Atylus. Superior antennae long and slender, having 

 a secondary appendage ; inferior antenna? having the peduncle 

 longer than the peduncle of the superior. Mandibles having an 

 appendage. Maxillipedes unguiculate, having a small squamous 

 plate to the coxSe, basos and ischium. Gnathopoda uniform, 

 each having the propodos large, with the postero-inferior margin 

 posteriorly produced ; carpus attached to the propodos near the 

 centre of its superior margin ; inf ero-anterior margin produced 



