TRIODOXTOPHORUS, CESOPHAGOSTOMUM 



I6 3 



the intestine of an African Negro from Mayotte, and more 

 recently by Turner in several natives of Nyasaland. 



v.t. 



ex.p 



(2) 



P-9 



rect. 



Jt. T.L. del. cuL nut. 



o I X34 S 



(/ = -02 mm.) (l * yio TTtm) 



FIG. 65. (i) Anterior end of Triodontophorus deminutus, Raill. and H., 

 lateral view, c.r., corona radiata ; m.c., mouth collar; c.b., buccal capsule; 

 d.t., dorsal tooth; v.t., ventral tooth; ex.p., excretory pore: n.r. t nerve 

 ring; ch.e., chitinous edges; a.m., oesophageal muscle; p.g", pigment 

 granules; o.v., oesophageal valve; ch.i., chyle intestine. (2) Posterior ex- 

 tremity of female T. deminutus, lateral view (Leiper). /., uterus ; 

 vag., vagina; #., vulva; v.p., vulval pad; rect., rectum; a., anus. 



The worms are about the size and general form of female 

 ankylostomes, but are straight and not bent at the head 

 end. The Nyasa specimens were 14 to 16 mm. by '73 mm. 



