Caprella Phasma. 



669 



Order Ljemodi'poda Latreille, in Cuv. Reg. Anim., iv. 126. 



Char. — Abdomen none or rudimentary; branchial lamellae 

 vesicular, attached underneath certain of the middle segments. 

 (Body 7-jointed, the post-occipital segment anchylosed to the 

 head, which carries a pair of labial palpi and a pair of legs ; 

 antennae 4, setaceous, the terminal joint multiarticulate ; 

 mandibles without palpi. Inhabitants of the sea.) 



(1.) Branchial lamellae 2 pairs, attached to 

 the second and third segments, which are 

 apodal - - Capre'lla. 



(2.) Branchial lamellae 3 pairs, attached to 

 the base of the second, third, and fourth 

 pairs of legs, which are all monodactyle - Pro x t0. 



1. Capre'lla Lamarck. 



Char. — Body linear-elongate, of 7 unequal subcylindrical 

 segments, the two posterior shortened : antennae frontal, 

 5-jointed, the basilar joint minute; the superior antennae 

 longest : eyes placed behind the antennae : palpi 4-jointed, 

 the terminal joint small and claw-like: legs 10, 4-jointed, 

 monodactyle ; the two anterior pairs maniform, the posterior 

 pair longest. 



1. C Phasma. — Head rounded in front, with a spine on 

 the occiput : first segment of the body with two spines, one 

 before the other ; second segment with a spine in front : 



Caprdlla Phasma. 



hands of the second pair of legs oval, pointed, with a tooth at 

 the base. Lam., Anim. s. Vert., v. 1 74. ; Leach, in Edin. 



don, vol. i. part ii. p. 69. ; in " Observations on the osculant Crustaceous 

 Genus Arcturus of Latreille, with the Description of a British Species." 

 This species is identical with the Astacilla longicornis Fleming, which is 

 illustrated in this Magazine, VIII. 494— -496.] 



