168 



A. Alcock — Garcinological Fauna of India. 



[No. 3, 



Chelipeds long and slender, but always mncli shorter than the first 

 three pair of legs : all the joints are slender, except the palm, which in 

 one or both sexes is club-shaped. Fingers shorter than the palm. 



First three pair of legs very long and slender ; some of their joints 

 are spiny. 



Fourth pair of legs more or less reduced in length, subdorsal in 

 position. 



The abdomen of the male consists of seven separate segments ; that 

 of the female consists of five segments — the 4th, 5th and 6th being fused 

 together. 



The branchial formula given by Bouvier for LatreilUa elegans, and 

 verified by myself for LatreilUa pennifera, is as follows : — 



Somites and 



their 

 appendages. 



Podo- 

 branchigs. 



ArthrobranchiEe. 



Pleuro- 

 branchiae 



. 





Anterior. 





Posterior. 





VII. 



. ep. .. 







••. 











= 



ep. 



VIII. 



. 1 + ep. .. 

















= 



1 + ep 



IX. 



.. + ep. .. 



1 



... 



1 







= 



2 + ep 



X. 



.. 



1 



... 



1 







= 



2 



XI. 



. 













1 



= 



1 



XII. 



. 







... 







1 



= 



1 



XIII. 



. 













1 



= 



1 



XIV. 



.. 







... 











= 







1 + 3 ep. 2 2 3 = 8 + 3ep. 



Distribution : Atlantic coasts of North America between 38° and 

 40° N. : off the Canaries and Azores : Mediterranean Sea : Bay of 

 Bengal and Andaman Sea : Japanese Seas : New South Wales coast. 



28. LatreilUa pennifera, n. sp. 



Very closely related to L. elegans, Roux. 



Carapace smooth, without spines, though the hepatic regions have 

 a strong bulge : the " neck " is rather slender (equally so in both sexes) 

 and is nearly as long as the rest of the carapace measured in the middle 

 line. 



Rostral spine short, acute, strongly deflexed. Supraocular spines 

 as long as the eyestalks, about half the total length of the carapace 

 ("neck" included) measured in the middle line; occasionally bearing 

 some tiny secondary spinules. 



Antennules slightly longer than the eyestalks : the outer flagellum 

 longer and very much coarser than the inner. 



The chelipeds, which are slightly longer in the male than in the 

 female, are between 3J and 4 times the total length of the carapace : 



