GRAPSOIDEA. 389 



cent; whole margin of carapax entire, unarmed. Abdomen of 

 male narrow, linear, subtriangular, penult joint and two preceding 

 nearly equal, slightly narrowing posteriorly, last segment subtri- 

 angular, a little oblong, obtuse. Feet short pubescent, the anterior 

 of moderate size, the others slender, but less so than in the varius. 



Plate 24, fig. 11a, animal, enlarged; l, abdomen of male; c, abdo- 

 men of female. 



From the same localities as the preceding. 



Length, one and a half to two lines. 



The beak is subtriangular and small, and not lobed like the varius. 

 The whole body above and below is pubescent, including legs and 

 outer maxillipeds. The female abdomen is large and suborbicular, 

 and has a low longitudinal elevation along the middle. 



This species is very near the Hymenosoma depressum of Hombron 

 and Jacquinot (Voy. au Pole Sud, pi. 5, f. 34; — Halicarcinus de- 

 pressus, A. White, Ann. Mag. Nat. Hist., xviii. 178, 1846) ; but the 

 figure of the depressum represents a small tooth on the margin, outside 

 of the eyes, which does not exist in our species. 



H. pubescent, Dana, Proc. Acad. Nat. Sci. Philad., 1851, v. 254. 



Family VI. MYCTIRIDJE. 



Myctikis longicarpis, Latr. 

 From salt marshes near Sydney, New South Wales. 



Latr. Encyc. Atlas, pi. 297, f. 3; Gtjerin, Icon., pi. 4, f. 4; Edwards, Hist. ii. 57, 

 and Cuv., pi. 18, f. 2. 



V. CRUSTACEA LEUCOSOIDEA vel OXYSTOMATA. 



The group Leucosoidea includes those Brachyura in which the effe- 



98 



