1922.] 



S. Kemp : Notes on Crustacea Decapoda. 



199 



is fully 14 times as long as its distal breadth and may be nearly 

 1 -5 times as long as the merus. In females the carpus is about 

 11 times as long as broad and 1*3 times the length of the merus. 

 In large males the carpus is twice or rather more than twice the 

 length of the chela, in small males and females about 175 times. 

 The fingers are about equal in length with the palm and are un- 

 armed. 



The second peraeopods in large males reach beyond the scale 

 by the chela, carpus and a considerable portion of the merus and 

 are from 7 to 8 '5 times the length of the carapace. The whole limb is 



Text-fig. ^.g.—Pericl imenes agag, sp. nov. 



a. First peraeopod of male. d. Carpo-propodal articulation of right 



b. First peraeopod of female. second peraeopod of male, viewed 



c. Second peraeopod of female (less from above. 



highly magnified than a, b orf). e. The same, viewed from the inner side. 

 f. Third peraeopod. 



covered with minute asperities, visible only under the microscope. 

 The ischium bears a small tubercle at the distal end of the lower 

 margin. The merus is from 10 to 14 times as long as wide, 1 with 

 a strong distal spine on the lower side; it is from 1*3 to 2 times 

 as long as the ischium and about three-quarters the length of the 

 carpus. The carpus is from 12 to 15 times as long as its distal 

 breadth in large males, 2 from 10 to 12 times in small males. There 

 is no conspicuous terminal spine on the inner side of the carpus ; the 

 distal end of the segment, viewed from the inner side shows two 

 angular projections (text-fig. 492) and one of these when seen from 



1 In measuring the breadth the spine at the distal end is not reckoned. 



2 The carpus is loo slender at the distal end in plate vii, fig. 9. 



