MUSEUM OF COMPARATIVE ZOOLOGY. 139 



Carpoporus papulosus nov. sp. 



Carapax naked above, areolated ; areolets protuberant, somewhat wart- 

 like, and granulated ; gastric and fi ontal regions very prominent. Lateral 

 teeth small, spiniform ; their interstices armed with denticles, two or 

 three in number. Front strongly projecting at the middle, and bilobed ; 

 margin of lobe concave. Peduncle of the eye granulated, and with a few 

 minute spines at the summit. Orbit with the margin minutely crenulated 

 with granules, with a slight fissure near the middle of the superior margin, 

 and with two spiniform teeth below near the outer side. Outer maxilli- 

 peds armed in front and along the inner edges with small but strongly 

 prominent tubercles. The carpus and hand of the chelipeds are sculp- 

 tured externally with granulated protuberances, which on the hand are 

 arranged in four or five longitudinal rows ; hand serrated above with 

 four teeth ; fingers short, less than half the length of the .palm. Ambu- 

 latory feet hairy below ; penult and antepenult joints armed above with 

 two rows of short, stout spines. 



Dimensions of a male : Length of carapax, 0.25 ; breadth, 0.31 inch; 

 proportion, 1 : 1.24. 



S. W. of the Tortugas, January 18, 1869. Cast No. 1. 25 fathoms. 

 Off Carysfort Reef, March 31, 1869. Cast No. 1. 52 " 



Micropanope nov. gen. 



The generic group now for the first time described is nearly allied to 

 Panopeus, and also shows some resemblance to Pilumnus. As in the 

 latter genus, the species are among the smallest of Cancroid forms, and 

 live in deep or moderately deep water. As far as I am aware they are 

 never truly littoral like the Panopei. Species of the genus occur in the 

 warmer seas of both sides of the American continent. 



The carapax is rather narrow, with the antero-lateral margin short and 

 the front broad. As in Panopeus, there are five teeth on the antero-lateral 

 margin, but the second tooth is coalesced with the scarcely prominent 

 angle of the orbit, and the posterior tooth is minute ; so that only two of 

 the teeth are prominent, arming the carapax at its antero-lateral angle. 

 The external hiatus of the orbit is reduced to a simple emargination. 

 The basal joint of the external antenna; is short, but meets a process from 

 the front. The endostome is usually marked on either side by a slight 

 ridge, which does not, however, extend to the anterior margin. The hand 

 in the chelipeds is large, with rather long fingers, bent to an angle with 

 the palm, so that the lower margin of the hand is rather deeply con- 



