262 AUSTRALIAN MALACOSTEACA. 



the rest. Posterior pleopoda with the outer ramus broad, 

 lanceolate, armed on the borders with a few setae, and terminating 

 in two short, strong setae. Telson conical, blunt. Length 

 about | in. 

 Port Jackson. 



Grenus Polychekia, Haswell. 

 Pereion broad ; pleon compressed, more or less carinate. 

 Antenna? sub-equal ; superior pair without an appendage. 

 Mandibles exappendiculate. Maxillipedes with well-developed 

 squamiform process. Grnathopoda small, sub-chelate. Pereiopoda 

 all prehensile, with narrow basa. Posterior pleopoda biramous 

 with equal rami. Telson double. 



459. Polycheria tenuipes. 



Polycheria tenuipes, Haswell, 1. c, p. 345, pi. xxii., fig. 8. 



Eyes very large, red. Superior antennae as long as the cephalon 

 and first six segments of the pereion ; first joint of the peduncle 

 short and stout ; second longer and narrower than the first ; third 

 inconspicuous ; flagellum rather longer than the peduncle, of 

 fourteen articuli. Inferior antennae rather longer than the 

 superior ; first joint of the peduncle short and stout ; second and 

 third longer, slender, subequal ; flagellum about equal in length 

 to the peduncle, of seven elongated articuli, each with a circlet of 

 a few delicate hairs. Anterior gnathopoda with the propodos 

 oval ; the palm nearly transverse, not defined. Posterior gnatho- 

 poda longer and more slender than the anterior pair ; carpus 

 and propodos nearly equal in length, the latter narrower than the 

 former, with the palm transverse, the dactylos short. Pereiopoda 

 subequal, slender, all prehensile; basos narrow; propodos oblong, 

 palm transverse, waved ; dactylos short. Three posterior pleopoda 

 biramous, the rami unarmed, last pair with the rami broad- 

 lanceolate, with one or two hairs on the borders. Segments of 

 the telson broad-lanceolate, acute. Length i ] - - in. 



Port Jackson, two fathoms. 



460. Polycheria brevicornis. 



Polycheria oreuicornis, Haswell, 1. c, p. 34G. 

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

 cephalon and first three segments of the pereion ; first segment 



