ANIMAL PARASITISM 



751 



Fig. 394. — Ancylostoma duode- 

 nale, female and male, with head of 

 Necator americanus drawn to same 

 scale. a7i., anus ; b^ bursa ; b.c, buc- 

 cal capsule ; cem.gl., cement gland ; 

 cerv.gl., cervical gland ; cerv.p., 

 cervical papilla ; cl., cloaca ; c.sp., 

 caudal spine ; ex.d., so-called excre- 

 tory' duct; int., intestine; n.ceph.gl., 

 nucleus of cephalic gland ; n.r., nerve 

 ring ; oes., esophagus ; ov., ovaiy ; 

 ovej., ovejector ; sp., spicules ; t., 

 testes ; ut., uterus ; vag., vagina ; 

 V.S.. vesicula seminalis. (After 

 Looss from Chandler, Hookioorm 

 Disease. Reprinted by permission 

 from Introduction to Human Para- 

 sitology by Chandler, published by 

 John Wiley and Sons, Inc.) 



