ATTSTBALIAN MALACOStBACA. 157 



Ocular peduncles moderate, not extending much beyond the 

 penultimate joint of the antennae ; the basal scales broad, flat, 

 and applied against the rostrif orm prolongation. Anterior legs 

 very unequal ; that of the left side very strong, and all covered 

 above with more or less pointed spines. Following pairs of legs 

 granular and spinose above ; their tarsus very long, with a 

 trenchant border, grooved externally, and armed below with 

 spines. Abdomen of the male having four rather large appen- 

 dages, terminated by a long simple lamella. Colour yellowish. 



New South "Wales (Dana) ; also on the coasts of India, and 

 in the Sooloo Archipelago. 



296. Diogenes oustos. 



Pagurus custos, Pabr., Supp., 412, Milne-Edwards, Hist. Nat. 

 Crust., t. ii., p. 236. 



Diogenes custos, Dana, U.S. Explor. Exped., Crust., i., p. 440, 

 pi. xxvii., fig. 10 ; Stimpson, Proc. Acad. Nat, Sei. Philad., 

 Vol. x., ap. 312. 



Posterior region of the carapace pilose ; anterior region with 

 a few hairs in tufts, and surface a little uneven. Ophthalmic 

 rostriform appendage sparingly dentate, and not as narrow as 

 in the miles. Outer antennas having the flagellum fringed below 

 the acicle, hardly prolonged into a process on the inner side, 

 and its outer process not reaching beyond the apex of the joint 

 following it. Large hand finely granulated above, and not armed 

 with spines on its upper border. Tarsus of the two following 

 pairs of legs without spines. Otherwise like D. miles, 



New South Wales (Dana) ; Sydney (Stimpson). 



297. Diogenes granulatus. 



Diogenes granulatus, Miers, Ann. Mag. Nat. Hist., v., (5), 

 p. 373 (foot-note), 1880. 



Eostrum short, acute, non-spinulous, not projecting beyond 

 the level of the ophthalmic scales, which are sub-triangulate and 

 entire ; the arm and wrist of the larger (left) chelipede robust 

 and coarsely granulated on their upper and external surface, the 

 hand somewhat less coarsely granulated, except on the upper 

 margins, very convex on its outer surface, particularly near its 

 articulation with the wrist ; lower (immobile) finger bent down- 



