CRUSTACEA. 



91 



Genus, Hippolyte. — Leach. 



" Carapace inflated on the top, rostrum large, compressed, 

 toothed. First pair of antennas with two branches. First pair 

 of legs chelate, equal, short ; second pair long, unequal, multar- 

 ticulate minutely chelate. 



Hippolyte cranciih. — Leach, Malac, t. xxxviii, fig. 13, — 21 ; 

 M. Edivards, 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, Caradina. — Edwards. 



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. 



Caradina varians. — Spence Bate, Brit. Assoc., Sept. 1865, p. 53. 



Hippolyte varians. — Leach, Malac, p. 38 ; Edwards, Hist. des. 

 Crust., t. ii., p. 371; Bell, Stalk-eyed Crust, p. 286. 



This was long classed among the Hippolytes, but 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 sj>ecies on the shore. 



Caradina tenuirostra. — Spence Bate, Rep. Brit. Assoc., 1867, 

 p. 278; Ann. Nat. Hist. (Car etiological Gleanings) 1865, 

 Several specimens taken in Plymouth sound in from 4 to 6 

 fathoms of water. 



Genus, Pandalus. 



First pair of antennas two branched. First pair of legs simple ; 

 second pair, slender, unequal in length, multarticulate, minutely 

 chelate. 



Pandalus annulicornus. — Leach, Malac. Brit. t. .ri ; Edwards, 

 Hist., des Crust., t. ii, p. 384; Bell, Stalk-eyed Crust, p. 297. 



