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HISTORY OP BRITISH CRUSTACEA. 
shaped somewhat like a toad, with the abdomen distinctly 
separated, narrow 7 , and bent abruptly under, in the manner 
of the j BraeJiyura” 
Gen. 102. PHRONIMA. 
Head large, vertical ; two antennae inserted, one on each 
side of the front ; tail ending in styliform threads. Body 
very soft, half transparent. Legs all long, slender, and 
feeble ; the fifth pair the longest, directed backwards, and 
ending in a strong, swollen, two-fingered claw. 
Phronima sedentaria. Fleming's Hermit Screw . (Plate 
XI. fig. 4.) — Body nearly transparent ; two first pairs of legs 
compressed and prolonged at the end. 
Pound by the Rev. Dr. Pleming at Burray, among the 
Shetland Isles. 
This curious creature lives inside a cylindrical cocoon, 
open at both ends ; the latter is of a gelatinous texture, and 
is probably formed of the body of some Beroe . 
We have apparently in the British Islands more than one 
species of the family Typhicla; they are not well made out. 
The antennae in this family are inserted on the lov T er part of 
the head, and are folded three or four times on each other. 
