THE ROUNDWORMS OF DOMESTIC SWINE. 



25 



Railliet and Henry's (191 Ib) description of Physocephalus sexa- 

 latus is based on specimens collected from a hog slaughtered at Hue", 

 Indo-China. These authors also report having observed it in material 

 from Madagascar in 1905. 



Ciurea (1912) reported Spiroptera sexalata in domestic swine 

 slaughtered at Piatra Neamtz, Roumania, in 1910. Five out of 72 

 healthy swine were infested with from one to thirty of these para- 



FIG. 21. Physocephalus sexalatus. Posterior 

 end of body of female, ventral view. a. , anus; 

 a. ut., anterior uterus; int., intestine; /. a. ut., 

 loop of anterior uterus; ov., ovary; p. ut., pos- 

 terior uterus. X 50. (Original.) 



Jfomm. 



FIG. 22. Physocephalus sexalatus. Ventral view of body of fe- 

 male in the region of the vulva, int., intestine; ut., uterus; 

 v., vulva; va., vagina. X 95. (Original.) 



sites in the stomach. In three cases they were found associated 

 with Arduenna strongylina, and once with Gnafhostoma hispidum. 

 In this latter case the parasites were found in the ulcer caused by 

 G. Tiispidum. The worms were partially or entirely buried in the 

 mucosa, but no lesions were attributed to them. Ciurea's (1912) 

 .description and drawings of Physocephalus sexalatus agree in most 

 respects with the present writer's observations, the few differences 

 being noted in the course of this article. 



