224 AUSTRALIAN MALACOSTRACA. 



of pereiopoda shorter than the others ; fourth and fifth pairs 

 subequal. Length about 5 lines. 



Kiama, New South Wales, between tide-marks. 



408. Allorchestes niger. 



Allorchestes niger, Haswell, 1. c, Vol. iv., p. 319. 



Eyes round. Superior antennae nearly as long as the eephalon 

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

 short, about half the length of the eephalon ; second and third 

 shorter ; flagellum of nine articuli. Inferior antennas twice as 

 long as the superior pair ; flagellum much longer than peduncle, 

 the articuli nearly twice as broad as long at the proximal end, 

 becoming narrower and longer towards the extremity ; seta3 few 

 and short. Anterior guathopoda with a lamellar, hair-bordered 

 process on the carpus ; propodos ovoid, twice as long as broad, 

 palm short, oblique, with a defining spine. Posterior guathopoda 

 with the carpus small, triangular ; the propodos irregularly heart- 

 shaped with the palm oblique, defined by a triangular tooth, and 

 armed with a row of spines ; the dactylos with a small tooth at 

 its base on the inner side. Pereiopoda subequal, with a few 

 setae on the borders of the segments. Colour blackish purple or 

 brown. Length \ in. 



Among sea-weed on Clark Island, Port Jackson. 



Genus Aspidopiioreia, Haswell. 



Coxae of the posterior gnathopoda and of the first and second 

 pairs of pereiopoda greatly expanded, deeper than the respective 

 segments, those of the three last pairs of pereiopoda small, that 

 of the third pair bilobed the posterior lobe larger than the 

 anterior. Antennae simple ; the superior pair shorter than the 

 inferior. Mandibles without an appendage. Maxillipedes with 

 a pointed dactylos. Grnathopoda sub-chelate the posterior pair 

 much larger than the anterior. Posterior pleopoda uniramous 

 the ramus uniarticulate. Telson squamiform, cleft to the base. 



This genus differs from Stcnotlioe, Dana, in having the ramus 

 of the last pair of pleopods uniarticulate ; in most of its characters 

 it approaches Allorchestes being distinguished from that genus 

 only by the largely developed anterior coxae, and the character 

 of the telson. 



