436 



ARTHROPODA. 



body with heavy armor; larva leaf -like and transparent 'glass crabs/ 

 culled Phyllosomae (fig. 442). Palinurus* spiny lobster. PAGURIDEA, 

 hermit crabs; abdomen reduced, soft-skinned, and hidden for protection 

 in a snail shell which the animal carries about, which habit has resulted 



FIG. 446. A, Platyonichus ocellatus,* lady crab ; B, Libinia emarginata* spider crab 



(From Emerton.) 



in a spiral twisting of the abdomen. Some hermits (Eupagurus) carry 

 sea anemones or hydroids on their shell, cases of symbiosis (p. 170). 

 Eupagurus* Clibanarius* Allied is Birgus, the palm crab of the East 



