Genus— LESTRIGONUS. {Edwards.) 



Lcstrvjonm. Milne Edwards, Ann. des Sci. Nat. xx. p. 392, Hist, des 

 Crust, iii. p. 81. Dana, U.S. Explor. Exped. p. 982. 

 Spekce Bate, Cat. Amph. Brit. Mus. p. 287. 



Generic character. Cephalon orbicular, deeper than broad. 

 Segments of the pereion short, three times as deep as long. 

 Pleon longer than the pereion ; first three segments long and the 

 three posterior short. Eyes large, occupying the entire lateral 

 walls of the cephalon. Antennae long, subequal, terminating 

 in multiarticulate flagella. Mandibles having a triarticulate 

 appendage. Gnathopoda complexly subchelate. Telson single, 

 squamiform, triangular. 



The head is large and rounded. The segments of the 

 body are short, while those of the tail are much longer, 

 the three anterior being the longest. The eyes are very 

 large and occupy the whole of the lateral walls of the 

 head, meeting nearly at the top and considerably en- 

 croaching upon the facial surface. The antennee are 

 of the same length, and are generally very long, never 

 being shorter than the depth of the head and always 

 terminating in a multiarticulate flagellum, the first 

 articulus of which is very long, apparently consisting of 

 several articuli fused together. The mandibles are 

 furnished with a three- jointed appendage. The first 

 two pairs of legs have the wrists infero-anteriorly pro- 

 duced to a sharp angle ; the hand is narrow and the 

 finger short and sharp, which, being capable of closing 

 against the produced point of the wrist, forms with it 

 a completely subchelate organ, very characteristic of the 



