VI ANOMURA—PAGURIDEA 171 
Fam. 1. Albuneidae.—The first legs are subchelate; the 
carapace is flattened, without expansions covering the legs. 
Albunea with several species in the Mediterranean, West Indies, 
and Indo-Pacific. 
Fam. 2. Hippidae.——The first legs are simple, the carapace 1s 
Fic. 117.—Remipes scutellatus, dorsal and veutral views, x 1. (From original 
drawings prepared for Professor Weldon. ) 
subeylindrical with expansions covering the legs. Remipes (Fig. 
117) and Hippa in tropical or subtropical seas. 
Tribe 3. Paguridea.’ 
The ordinary Hermit-crabs, common on the English 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. Philomath. Paris (8), ii., 1889 ; and 
Expédition du Talisman, ‘‘Crustacés Décapodes,” 1900. 
