CRUSTACEA. 
91 
Genus, Hippolytb. — Leach. 
“ Carapace inflated on the top, rostrum large, compressed, 
toothed. First pair of antennm with two branches. First pair 
of legs chelate, equal, short ; second pair long, unequal, multar- 
ticulate minutely chelate. 
Hippolytb cranchii. — Leach, Malac, t. xxxviii, jig. 13, 21 ; 
M. JSdwarAs, Hist, des Crust., t. ii, p. 367 ; Bell, Stalk-eyed 
Crust., p. 288. 
“ Common in crab boats, and consequently living where the 
fishing is carried on for lobsters.” 
This species appears to exist all round the island, and is com- 
mon on stony ground, in from 6 to 1 0 fathoms of water. 
Genus, Caeadina. — Bdwards. 
Like Hippolyte, but having the first pair of legs chelate, and 
more robust. The propodos or hand articulating with the carpus 
or wrist by the inferior angle only. 
Caeadina vaeians. — Spence Bate, Brit. A.ssoc., Sept. 1865, p. 63. 
Hippolyte varians. — Leach, Malac., p. 38 ; Edwards, Ilist. des. 
Crust., t. ii.,p. 371; Bell, Stalk-eyed Crust, p. 286. 
This was long classed among the Hippolytes, hut it undoubtedly 
belongs to this genus. Not uncommon in Plymouth sound. Br. 
Leach says that it is abundant in pools amongst the rocks on 
the south-western coast of Devon and Cornwall, and it is curious 
that it is not mentioned in Mr. Couch’s Cornish Fauna for 1857, 
as it is one of the most common species on the shore. 
Caeadina tenuieostea. — Spence Bate, Rep. Brit. Assoc., 1867, 
p. 278; Ann. Nat. Hist. {Carcinological Cleanings) 1865, 
Several specimens taken in Plymouth sound in from 4 to 6 
fathoms of water. 
Genus, Pandalus. 
First pair of antennse two branched. First pair of legs simple ; 
Second pair, slender, unequal in length, multarticulate, minutely 
chelate. 
b'ANDALus ANNULicoENUS. — Leach, Malac. Brit, t, xi; Edwards, 
Hist., des Crust., t. ii, p. 384; Bell, Stalk-eyed Crust, p. 297. 
