NEMATODE PARASITES OF BIEDS 69 



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

 Distribution, — Europe (Germany (Leipzig)) and Asia (Russian 

 Turkestan). 



HETERAKIS PARISI Blanc, 1913 



Host. — " Nandou " (=Rhea americana). 



Location. — Cecum. 



Morphology. — Heterakis (p. 50) : Body cylindrical, attenuated 

 at both ends. Lateral membranes present, extending from level of 

 buccal cavity to near the posterior extremity of body. Cuticle with 

 fine transverse striations. Mouth with 3 small lips, 18/*, high, each 

 with 2 external papillae. Total length of esophagus 1 mm.; bulb 

 215/* in diameter. 



Fig. 93. — Heteeakis parisi. Male tail. After. Blanc, 1914 



Male 7 to 9 mm. long by 350 to 400/x wide. Caudal extremity (tig. 

 93) with long delicate point. Preanal sucker with chitinous ring, 

 notched in the median line on its posterior edge. Two bursal alae 

 with 12 pairs of papillae of which 2 are preanal, 2 adanal, and 8 

 postanal. Spicules very unequal, the right about 2.2 mm. and the 

 left 640/1 long, provided with large membranous alae 45/x in trans- 

 verse diameter. 



Female 10 mm. long by 340 to 360/t wide. Tail very slender. 

 Vulva slightly anterior to middle of body. Eggs 68//, long by 45/i 

 wide. 



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



Distribution. — Europe (France (Dijon)). 



HETERAKIS PSOPHIAE Travassos, 1913 



Synonym. — Ganguleteralds psophiae (Travassos, 1913) Lane, 1917. 

 Host. — P sophia viridis. 

 Location. — Intestine. 



