AUSTRALIAN MALACOSTBACA. 267 



rounded protuberance, clothed in common with the lower margins 

 of the fourth and fifth segments, with long plumose hairs ; 

 flagellum as long as the peduncle. Propodos of anterior 

 gnath opoda sub-quadrate, a little broader distally than proximally, 

 palm nearly transverse, not defined. Posterior gnathopoda with 

 the meros and carpus both produced into a small tooth at their 

 inferior and distal angle ; propodos large, sub-quadrate, twice as 

 long as broad, palm nearly transverse, concave. Posterior 

 pleopoda reaching beyond the extremity of the preceding pair, 

 the outer ramus armed with three hooks, the inner f oliaceous, 

 armed with slender straight spines. Telson armed with about 

 half-a-dozen slender spines. Length i in. 



Clark Island, Port Jackson. 



466. Amphithoe cinerea. 



Amphithoe cinerea, 1. c, p. 269. pi. xi., fig. 4. 



Eyes round, projecting, almost colourless. Superior antennse 

 more than half of the length of the body ; first segment of the 

 peduncle shorter than the second ; third joint very short , flagel- 

 lum much longer than the peduncle. Inferior antennse shorter 

 than the superior pair ; flagellum shorter than the last two seg- 

 ments of the peduncle. Anterior gnathopoda with the propodos 

 long- ovate, armed with hairs, the palm oblique, undefined. 

 Posterior gnathopoda with the propodos broader, but rather 

 shorter than that of the anterior pair, hairy; palm oblique, 

 convex, devoid of teeth, but with a tubercle near its distal end. 

 Two anterior pairs of pereiopoda subequal, stoutish. Third pair 

 with the basos sub-circular ; basa of fourth and fifth pairs oval. 

 Posterior pleopoda rather short, the rami not extending so far 

 as those of the fifth pair ; the outer ramus short, armed with 

 two hooks ; the inner slightly longer, broader, compressed, armed 

 with a few short setae. Telson sub-triangular, blunt. Colour 

 ashy-grey. 



Port Jackson. 



467. Amphithoe grandimanus. 



Amphithoe grandimanus, Haswell, 1. c, p. 270. 



Nearly allied to the preceding ; distinguished by the size and 

 form of the posterior gnathopoda, which are very much larger 



