SIPHONCECETES TYPICUS. 
465 
AMPIIIPODA. PODOOERIDES. 
NAT ATOM A. 
Specific character. Antennae cylindrical : superior reaching to the ex- 
tremity of the peduncle of the inferior : inferior antennae nearly as long as 
the animal ; flagellum with three joint-like articuli, the first and second 
greatly elongated. 
Length | inch. 
Siphoncecetes typicus. Kroyer, Nat. Tidsk., 2. Ser., i. p. 491, pi. vii. fig. 4. 
Voyage en Scand. Crust., pi. xx. fig. 1 . Spence 
Bate, Cat. Amph. Brit. Mus. p. 270, pi. xlvi. 
fig. 1 (after Kroyer). 
The eyes are round. The superior antennae are about 
one-half the length of the animal. The inferior have 
the peduncle nearly as long as the superior antennae ; 
the flagellum consists of two very long and one short 
articuli. In Kroyer’s figure of this organ the second 
articulus is shorter than the first, and, as well as the 
third or last, is furnished with a few strong, sharp, and 
slightly-curved spines, besides the fine hairs. The first 
pair of legs are slender, the wrist being as long as the 
hand, of which the palm is extremely oblique. The second 
pair are a little stouter than the first, and the hand some- 
what less oblique, and more clearly defined. The first 
two pairs of walking legs have the thighs but moderately 
dilated, and the finger nearly straight. The last three 
are very short ; and the penultimate pair of caudal 
appendages are as long as the ultimate. 
H H 
