71 



the carapace. Buccal cavern well demarcated from the epistome, the efferent 

 branchial channels well defined. External maxillipeds not completely closmg 

 the buccal orifice : they have a pediform cast, the ischium and merus bemg 

 rather narrow and the flagellum coarse. 



Chelipeds long and slender, but always much shorter than the first three 

 pairs of ambulatory legs: all the joints are slender, except the palm, which m 

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



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



joints are spiny. 



Fourth (last) 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. 



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. 



Latreillia jjennifera, Alcock. Plate VII., fig. 27. 



Latreillia pennifera, Alcock, Journal Asiatic Soo. Bengal, LXVIII., pt. 2, 1899, p. 168. 



Very closely related to L. elegans, Koux. 

 - 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. 



°Kostral 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 Une; occasionally bearing some tiny secondary spmules. 



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 3^ and 4 times the total length of the carapace: their joints are long, 

 slender, and cylindrical, except the palm of the male, which is club-shaped : 

 there are a few spines on the arm, but the other joints are smooth : the fingers 

 are not half the length of the palm. 



The first 8 pair of ambulatory legs, though they increase slightly in length 

 from before backwards, are not very dissimilar in length, the first pair being 

 nearly 8 times the total length of the carapace. All their joints are slender : 

 the merus is spinate, the carpus sparsely spinate, and the propodite is shghtly 

 dilated at the far end of the posterior border where there are a few spmes. 



