Aacx CRUSTACEA. 



460 



penult joint of second and third pairs of legs pink or rose-coloured on 

 basal half and the rest green ; the tarsus dark brown at base the tips 

 yellowish white; peduncles of eyes, rose-coloured; eyes dark dull 

 blue; outer antennae, orange ; inner antennae, blue with orange tips. 



Front with a low median point; carapax naked; posterior part 

 wholly membranous, excepting sometimes its anterior margin. Pedun- 

 cles of eyes longer than front margin of carapax, slender ; scale of basal 

 part very small, subtriangular; acicle of outer antennae very short. 

 Legs smooth ; larger hand naked, granulous, carinate and subdenti- 

 culate below, and somewhat angled and uneven in outline above, 

 finger subcarinate above, carpus having a small tubercle on the outer 

 surface, as in the Gaimardii; smaller hand cristate, and five-dentate 

 above, sparsely pubescent, finger subtuberculous, carpus carinate, but 

 scarcely dentate ; following legs smooth or very nearly so, no joints 

 sulcate, a few hairs above on penult joint, some tufts below on same 

 and on tarsus, but not so densely hairy on third pair as in elegans, or 

 Gaimardii. The crested under side of the larger hand, distinguishes 

 this species from the Gaimardii. Specimens preserved in alcohol are 

 usually colourless except the basal portion of the tarsus which is 

 brownish red. 



This species is near the cristimanus of Edwards (Ann. des Sci. Nat. 

 [3], v. 64, 1848), but in the short description given of that species, 

 the stomach region is said to be furnished laterally with long hairs,, 

 which is not true of the latens. If the two species prove to be iden- 

 tical, Dr. Eandall has the precedence in time by nearly ten years. 



A specimen from the Sandwich Islands is very similar in all re- 

 spects, but had the larger hand broken off; and this hand, if it be the 

 one which is now with the specimen in the same bottle, as we believe, 

 differs decidedly from that of the latens in being rounded below, and 

 also, in being longitudinally much concave in the outline of the lower 

 side. 



Pagurus latens, J. W. Randall, Jour. Acad. Nat. Sci. Philad., viii. 135. 



aENUS ANICULUS, Dana. 



Pedes antici subcequi. Digiti in piano verticali claudentes, apice cmmei, 

 instar cochlea?*is excavati. Frons breviter rostratus. 



