LESTRIGONUS, 3 
AMPHIPODA., HYPERIUDZ. 
HYPERINA. 
Genus—LESTRIGONUS. (Edwards.) 
Lestrigonus. Miune Epwarps, Ann. des Sci. Nat. xx. p. 392. Hist. des 
Crust. iii. p. 81. Dana, U.S. Explor. Exped, p. 982. 
Sprnce Bartz, 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. Antenne long, subequal, terminating 
in multiarticulate flagella. Mandibles having a triarticulate 
appendage. Gnathopoda complexly subchelate. ‘'Telson single, 
squamiform, triangular. 
Tue 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 antenne 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 
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