NEMATODE PARASITES OF BIRDS 57 



Twelve pairs of papillae; 2 pairs near the sucker. 6 in the region of 

 the cloacal aperture, of which the third lateral pair is comparatively 

 small; the 2 ventral pairs of this group lie close together; posterior 

 to this group is a pair of moderate sized papillae ; the lateral papillae 

 of the caudal group are relatively distant from one another and the 

 posterior pair is much the larger. 



Female 6.6 mm. long by 300/x wide. The body has the usual dorsal 

 curve anteriorly and also curves ventrally somewhat abruptly at the 

 level of the vulva, which is in the middle of the body; a posterior 

 flap projects forward over the vulva. The anus is 660/x from the tip 

 of the tail. The eggs are 50/* long by 30/*, wide. 



Life history. — Probably similar to that of H. gallinae (p. 54). 



Distribution. — Asia (Intlia (Bengal) and Philippines). 



HETERAKIS BOSIA Lane. 1914 



Hosts. — Ceriomis satyra and T rag o fan satyra. 



Location. — Intestine, probably ceca. 



Morfhology. — Heterakis (p. 50) : Cuticle with cross-striations. 



Fig. 72. — Heterakis BEitAMromA. Male tail. After Lane, 1914 



Lateral alae throughout practically whole length of body, ending 

 near the sucker of the male and 30/*, from posterior extremity of 

 female. Esophagus 1.5 mm. long. 



Male 8.1 mm. long. Cloacal aperture 1.3 mm. from caudal ex- 

 tremity; long slender appendage (that is, part of tail posterior to 

 the papillae) is 700/t long. Sucker 250/*, in diameter, its posterior 

 rim 350ju, from the cloacal aperture. Twelve pairs of caudal 

 papillae (fig. 73a) of which 4 are preanal, 2 adanal, 6 postanal. 

 Spicules unequal, the right (fig. 73c) 1.6 mm. long, its proximal end 

 wide (75/x) like a spear head, its distal end a long sharp point; left 

 spicule (fig. 73£>) 900//, long, with a one-sided expansion at about a 

 quarter of its length from the point. 



Female 9.5 mm. long by about 400/z wide. Anus 1.5 mm., caudal 

 papillae 800/*, from posterior extremity. Vulva slightly posterior 

 to middle of body; posterior to it there are occasionally 5 or 6 

 cuticular tubercles. Eggs 75/*. long by 35/*, wide. 



