218 



ZOOLOGY R)K MEDICAL STUDENTS 



CHAP. 



The basal segment of each is enlarged to form a stout blade with stiff 



s projecting from it. This blade-like development is 



gnathobase. and the development of a gnathobase is one of 



c.e. 





! view, r.t, ('(Mitral eye ; l.c, Literal eye ; o, opistho- 



the most cl. ic of the modifications of the arthropod limb for 



purposes of mastication. The seventh appendages (Fig. 98, B, VII) are a 

 pair of stout rod-like oru r ;ms railed chilaria, just behind the mouth. The 

 eighth appendages (VIII) are flattened plates, continuous with one 



