150 ARMADILLO VULGARIS. 



antenna placed in foveolrc in the middle of the clypeus ; 

 external double palpi with the second joint of the 

 internal footstalk notched at the apex ; shell emargi- 

 nate behind ; orbits behind with one fissure, and 

 externally with one fold ; anterior pair of legs un- 

 equal. 



Spec. Char. Shell granulated with nine folds on each 

 side ; front with three lobes ; apex of the hand black. 



Cancer pagurus ; Lin.Syst. Gmelin, i. pars. 5, p. 2973; Pennant, Brit. Zoot. iv.t. 3. 

 Crube pagure,Tr-; II granciporro,\t.; Dcr Faschenkrebs,Ger. 



The common Crab is too well known to render any particular 

 description necessary. Tt is considered to be in season between 

 Christmas and Easter, and about harvest, being much esteemed as 

 an article of food. During the summer months it occurs in great 

 abundance on all our rocky coasts, especially where the water is deep. 

 In the winter they are supposed to burrow in the sand or to retire 

 to the deeper parts of the ocean. They are taken in wicker -bas- 

 kets or in nets, sunk in the sea and baited with garbage. 



Medical Uses. — The tips of the claws and crustaceous covering 

 of the common crab are similar in composition to crab's eyes, and 

 are used for the same purposes. 



ARMADILLO VULGARIS. 



Common Amiadillo, or Pill Millepede. 



Pl. XXIV. fig. 2. 



Order Isopoda. Family Oniscides, Latr. 



Gen. Char. External antenna inserted on a promi- 

 nence in a cavity on each side of the head ; eyes late- 



