CANCROIDEA. 191 



both above and below. The abdomen has a naked margin. The 

 fingers have a spoon-shape extremity, the margin being very thin ; in 

 the lower the apical margin is slightly concave, and the extremity of 

 the upper finger, which is somewhat acuminated, shuts against the 

 concavity. 



ZOZTMUS L.EVIS. 



Carapax latus, Icevis, paido nitidus, areolis plerwmque obsoletis, 2LetlM 

 prominidis, rnargine antero-laterali dilatato et tenui, obsolete 2-3-lobato, 

 dente nullo. Pedes antici cequi, inermes, manu laid, supra rotundatd, 

 digitis canalicidatis, bene 4:-dentatis, dentibus tenuibus, digito mobili 

 valde wicinato. Pedes postici subcristaii fere nudi. 



Carapax broad, smooth, somewhat shining, areolets mostly obsolete, 

 2 F and 1 M a little distinct, antero-lateral margin dilatate, thin, 

 obsoletely two to three-lobed, but without teeth. Anterior feet 

 equal, unarmed, hand broad, rounded above, fingers channeled, 

 each neatly four-toothed, the teeth thin, moveable finger strongly 

 uncinate. Posterior feet subcri state, nearly naked. 



Plate 9, fig. 5 a, male, enlarged two diameters; b, outer maxilliped; 

 c, fingers of hand, outer view. 



Balabac Passage- 

 Length of carapax, 5*1 lines; greatest breadth, nine lines; ratio of 

 length to breadth, 1 : 1*75- The surface of the carapax shows traces 

 of the areolets towards the front and antero-lateral margin. The 

 appearance of two lobes in the antero-lateral margin is distinct but 

 faint, but the subdivision of the anterior of the lobes into two others 

 is less obvious, though visible in the bending of the outline. The 

 postero-lateral side is rounded. The eye has a thin, prominent orbit, 

 which is quite entire, and when shut back lies deep within, not pro- 

 jecting at all above the outline. The outer surface of the hand is a 

 little uneven. The fingers touch only at apex, the moveable finger 

 being very strongly uncinate, so that the extremity of the short hand 

 may be said to be broad truncate. The carpus has the inner margin 

 thin. The posterior legs are very thin, with a trenchant upper mar- 

 gin to the joints. The male abdomen consists of five segments. 



