AUSTRALIAN MALACOSTRACA. 227 



plate. G-nathopoda not subchelate. Coxa? o the gnathopoda 

 and the two anterior pairs of pereiopoda very large. The three 

 posterior pairs of pleopoda uniform. Telson squamiform, cleft. 



412. Stegocephalus latus. 



Stegocephalus latus, Haswell, 1. c., Vol. iii., p. 252, pi. viii., fig. 2. 



Cephalon short, about half as long as first segment of pereion. 

 Pereion dilated. Pleon slightly compressed. Superior antenna? 

 as long as the cephalon and first segment of the pereion ; first 

 joint of peduncle compressed ; third joint longer than second; 

 flagellum as long as third joint of peduncle, composed of few 

 (seven or eight) articuli ; appendage very short. Inferior 

 antennae nearly as long as the superior ; flagellum very short, 

 of six articuli. G-nathopoda sub-pediform, similar ; anterior pair 

 with the basos much shorter than that of the posterior pair ; 

 both hairy, with the carpus and propodos of equal length, the 

 former sub-triangular, the latter narrow. Posterior pereipoda 

 with the meros produced and pointed at its postero-distal angle, 

 and the carpus rather short, with two teeth at its distal extremity. 

 Three posterior pairs of pleopoda stout ; the rami of all three 

 equal, short. Telson small, squamiform, slightly cleft. 



Tasmania. 



Genus Amaryllis, Haswell. 



Superior antenna? with a well-developed appendage. Mandibles 

 with a palp. Maxilli pedes with well-developed squamiform plates. 

 Anterior gnathopoda sub-pediform. Posterior gnathopoda 

 imperfectly subchelate. Rami of the fourth and fifth pleopoda 

 styliform ; those ot sixth pair broad-lanceolate. Telson squami- 

 form, cleft. 



413. Amaryllis macrophthalmus 



Amaryllis macroplithahnus, Haswell, 1. c, Vol. iii., p. 253, 

 pi. viii., fig. 3. 



Eyes vertically elongated, sub-crescentic. Superior antenna? 

 .equal in length to the cephalon and first five segments of the 

 pereion ; first joint of the peduncle as long as the cephalon ; 

 second and third joints short ; flagellum longer than peduncle, 

 of about thirty segments ; appendage of seven segments. Inferior 



