Fig-. 188. — Ancylostoma duodenale, female and male, with head of Necator 

 americanus drawn to same scale, an., anus ; h, bursa ; b.c, buccal capsule ; cem.gh, 

 cement gland ; ceph.gl, cephalic gland ; cerv.gl, cervical gland ; cerv.p., cervical 

 papilla ; cL, cloaca ; c.sj)., caudal spine ; ex.d., so-called excretory duct ; int., in- 

 testine ; n.ceph.gl., nucleus of cephalic gland ; n.7\, nerve ring ; oes., esophagus ; ov., 

 ovary; ovej., ovejector ; sp., spicules; t, testes; ut., uterus; vag., vagina; v.s., 

 yesicula seminahs. (After Looss from Chandler, Hookworm Disease. Reprinted 

 by permission from Chandler, Introduction to Human Parasitology, John Wiley and 

 Sons, Inc.) 



