CRABS AND INSECTS. 
Sint 
AH 
FIG. 100.—Hermit out of the shell, showing soft abdomen. 7, hardened 
ridge which bears against the inner edge of the aperture of the shell; 
a, a, appendages to which the eggs are attached. 
(After Morse.) 
Fic. 101.—Hermit-crab in the shell of a sea-snail. 
(After Emerton.) 
