306 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Male 19 to 32 mm. long by 700/* wide. In a 19 mm. specimen, 

 caudal alae 1.56 mm. long, cloacal aperture 950/* from caudal ex- 

 tremity. According to Schneider's figure (fig. 3675), 4 pairs of 

 lateral pedunculated papillae, 3 preanal ventral and 3 pairs of 

 postanal ventral papillae. Seurat, however, describes 5 pairs of 

 long pedunculated papillae, 4 of them in the cloacal region and the 

 other pair midway between cloacal aperture and caudal end, and 11 

 median papillae, 3 of them just anterior and 2 pairs just posterior 

 to the cloacal aperture, the remainder more posterior. Spicules un- 

 equal, the left 840/* long, slender and pointed, the right not over 

 400/* long and thicker than the left. 



Female 20.5 mm. long by 660/* wide. Tail 240/* long, conical. 

 Vulva not prominent, in anterior third of body, 3 mm. posterior 



Figs. 366-368. — 366, Physalopteka gemina. Male tail. After Linstow, 

 1899. 367, Physalopteka subalata. «, Lip ; b, male tail. After Schnei- 

 der, 1866. 368, Physalopteka truncata. a, Lip ; h, male tail. After 

 Schneider, 1866 



to end of esophagus. Vagina 1 mm. long; egg chamber 750/* long; 

 2 uteri. 



Life history. — Unknown ; probably involves intermediate stages in 

 insects. 



Distribution. — South America (Brazil) and Europe (Corsica (San 

 Martino)). 



PHYSALOPTEKA TRUNCATA Schneider, 1866 



Hosts. — Primary : Gallus gallus and Phasianus gallus; secondary : 

 Unknown. 



Location. — Proventriculus. 



Morphology. — Physaloptera (p. 295) : External median tooth on 

 each lateral lip is widened anteriorly ; the 3 denticles of the internal 

 tooth are somewhat heart-shaped, with a cylindrical base and conical 

 tip (fig. 368«) . 



