I9I9-1 S. Kemp : Notes on Crustacea Decapoda. 323 



The lower surface of the palm, bounded by these two crests, is only 

 slightly convex; it bears rather large scattered granules, some of 

 which towards the distal end are arranged in a single row and thus 

 form a low ridge which extends to the middle of the finger. The 

 fingers themselves are nearly twice the length of the upper border 

 of the palm. On the prehensile edge of the fixed finger there is, in 

 the basal two thirds, a series of small inconspicuous teeth ; the 

 same margin of the dactylus is similarly armed, but some of the 

 teeth at the proximal end are situated on a low convex crest, the 

 counterpart it would seem of the large triangular tooth found in 

 this position in the male. On the upper and outer borders of the 

 dactylus are longitudinal rows of granules. 



In the first pair of walking legs, which alone remains in the 

 specimen examined, the merus is a little more than twice as long 

 as broad ; it bears large tympana on both sides, not divided by a 

 longitudinal ridge. The propodus is stout, a trifle more than 

 twice as long as broad, and bears on its anterior face a strong 

 longitudinal ridge The dact^-lus is one and a half times as long 

 as the propodus. The abdomen is very broad covering practically 

 the whole of the sternum. 



Scopimera infiata is allied to 5. kochi, Roux, and S. sigiUo- 

 rum (Rathbun). The three species resemble Dotilla and differ 

 from normal members of the genus in two points,— (i) the merus 

 of the outer maxillipeds is longer than the ischium and (ii) the 

 side-walls of the carapace are to some extent sculptured. In 

 5. infiata and S. kochi the tympanum on the inner face of the 

 merus of the cheliped is divided longitudinally by a narrow ridge 

 and the same character, though not mentioned in the description, 

 is perhaps also to be found in S. sigillorum. In other species of 

 Scopimera the tympana on the chelipeds are not bisected ; but 

 those on the walking legs are divided in an exactly similar 

 manner in S. investigatoris and 5. proxima. 



There can be little doubt that S. infiata is correctly referred 

 to the genus Scopimera. In the female I have examined the 

 accessory branchial orifice is situated between the bases of the 

 first and second walking legs and is thickly fringed with hair, 

 while the abdomen does not possess the peculiar form invariably 

 met with in Dotilla. The abdomen of the male, as described by 

 Milne-Edwards, is similar to that of S. globosa. 



Scopimera kochi, judging from Roux's excellent description, 

 is a closely related form, difierring in the sculpture of the upper 

 surface of the carapace, in the form and coarse tuberculation of 

 the outer maxillipeds and in the absence of a tooth at the inner 

 angle of the carpus of the cheliped in the male. 



S. sigillorum, described by Miss Rathbun as a species of 

 Dotilla, is unfortunately known only from a single female speci- 

 men. The statement that the abdomen is subcircular indicates 

 that it cannot be included in the genus Dotilla as here defined. 

 In most respects the species appears to be very closely related 

 to S. infiata, but the carapace is more distinctly areolated and 



