MUSEUM OF COMPARATIVE ZOOLOGY. 173 



legs differs from the posterior pair in having the dactylus and propodus a little 

 shorter, and the lower edge of the merus more hairy and minutely spinulose. 

 The telson is deeply cut by a broad median notch in its hind margin into two 

 lobes, the left of which is the larger. The margins of both lobes are spinose. 



There is (in the alcoholic specimens) a narrow red ring around both ringers 

 near their tips, a broader band of the same color around the base of the fingers, 

 and a red patch on the inner side of the anterior face of the hand. 



Length of carapace, 6.5 mm. ; greatest breadth of carapace, 6 mm. ; length of 

 ocidar peduncles, 2.3 mm. 



Station 3368. 66 fathoms. 1 male. 

 " 3379. 52 " 1 male. 



This species, like S. iris A. M. Edw., is characterized by the spiny armature 

 of the chelipeds. It differs from S. iris by having a smaller number of spines 

 upon the anterior face of the chela, and in their arrangement in a few definite 

 longitudinal rows, the surface between the rows being spineless and reticu- 

 lated. The chela does not display the lively iridescence so striking in Milne 

 Edwards's species, nor are' the ophthalmic scales bidentate at the end. The 

 merus of the third maxilliped is not armed with a distal spine, as in S. iris. 



Paguristes fecundus, sp. nov. 



The anterior or gastric section of the carapace is smooth in the central and 

 hinder parts, rugose near the front, and tuberculose in the antero-lateral region, 

 where a few of the tubercles assume a spiny form ; from the tubercular surface 

 spring long slender setae. The anterior margin of the carapace is produced in 

 the median line so as to form an acute triangular rostrum, which projects be- 

 yond the subacute lateral processes ; between the rostrum and the lateral pro- 

 cesses the anterior border is concave and thickened so as to form a rim. The 

 anterior gastric lobes are clearly defined anteriorly. 



The ocular peduncles are long and cylindrical, reaching considerably beyond 

 the antennal peduncle, but not quite so far as the antennulary peduncle. The 

 ophthalmic scales are of moderate size and bidentate at the tip, the external tooth 

 very minute. The antennal acicle reaches almost to the end of the peduncle ; 

 it is setose, and armed with six spines, two of which form a terminal fork, 

 the others being marginal. The external prolongation of the second antennal 

 segment is narrow, setose, and minutely spinulose ; there is, moreover, a 

 spinule on the upper face of this segment behind the base of the acicle : the 

 antennal flagellum is very short (about equal in length to the anterior section 

 of the carapace). The third pair of maxillipeds are closely approximated at the 

 base; their merus joints are armed with three or four denticles on the lower 

 margin, and one at the distal end of the upper margin. 



The chelipeds are short and of like size and shape ; the merus is smooth 

 within, rugose without ; the two inferior margins are armed with minute 

 black-tipped spinules. The carpus is tomentose and spinulose, the largest 



