ANOMURA PAGURIDEA 



171 



Fam. 1. Albuneidae. — The first legs are subehelate ; the 

 carapace is flattened, without expansions covering the legs. 

 Albunea with several species iii the Mediterranean, AVest Indies, 

 and Indo-racific. 



Fam. 2. Hippidae. — The first legs are simple, the carapace is 



Fu;. 117. — Remipes snAellahis, dorsal and ventral views, x 1. (From original 

 drawings prepared for Professor Weldon.) 



subcylindrical with expansions covering the legs. Remiiyes (Fii 

 117) and Hlppa in tropical or subtropical seas. 



Tribe 3. Paguridea.^ 



The ordinary Hermit-crabs, common on the Englisli as on 

 every coast, are characterised by the fleshy asymmetrical 

 abdomen from which all the hard matter has disappeared, and 

 which is carried tucked away in an empty Gasteropod shell. The 

 abdomen is spirally wound in accordance with the shape of the 

 shell, and a firm attachment is effected by means of the sixth pair 

 of pleopods, especially that of the left side, which is fashioned into 

 the form of a hook and is curled round the columella of the shell ; 

 this attachment is so secure that in trying to pull a Hermit-crab 

 out of its shell the body is torn apart before the hold gives 

 way. The other pleopods are in a much reduced condition, being 

 generally altogether absent from the right side of the abdomen, 



1 Milne Edwards and Bouvier, Bull. Soc. ritihrinath. Paris {8), ii., 1889; and 

 Expedition du Talisman, "Crustaces Decapodes," 1900. 



