890 CRUSTACEA. 



producto; articulo tertio, infra acutd prodtocto, digito sat longo. 

 Pedes paris Qti 7 mis breviores, setis spar sis brevissimis. 



Antennae very slender; superior pair twice shorter than inferior, 

 and a little longer than base of inferior; inferior hardly half as 

 long as the body, flagellum much longer than base, joints oblong, 

 setae very short, few (not longer than breadth of joints). Hand of 

 first pair of feet but little oblong, narrowest at base, somewhat 

 obliquely truncate at apex, palm straight, short hirsute ; carpus tri- 

 angular, below produced and acuminate. Hand of second pair 

 large suboval, palm nearly straight, a few minute tufts of hairs, 

 third joint of this pair short and acutely prolonged behind, the 

 fourth or carpus not produced below in a process between the hand 

 and third joint. Sixth pair of legs a little shorter than seventh, 

 the setae few and very short. 



Plate 60, fig. 5 a, animal, enlarged ; 6, portion of inferior antennae; 

 c, hand of first pair of legs ; d, hand of second pair. 



Tongatabu, Pacific Ocean; in shallow water among delicate sea- 

 weeds. 



Length, six to eight lines. Body naked. The basal portion of the 

 superior antennae reaches to apex of penult joint of base of inferior 

 pair. The joints of the flagellum of the inferior antennae much nar- 

 rower at base than at apex. Maxillipeds densely hairy at apex. The 

 fifth pair of epimerals is very narrow. The head is vertically short. 

 Finger of second pair of feet much curved, and when closed leaves 

 some space between it and the palm, although the palm is straight or 

 slightly convex. The fourth joint of this pair is narrow and short, 

 and the preceding projects much below it, to an acute point. 



A. gracilis, Dana, Proc. Amer. Acad. Sci., ii. 205. 



Allorchestes humilis. 



Feminae ? — Antennae, lmce 2dis paulo breviores, flagello §-%-articidato. 

 Antennce 2dce corpore fere triplo breviores, flagello 9—10-articidato, 



