NEMATODE PARASITES OF BIRDS 



243 



Male 6.5 mm. long. Buccal cavity 170 to 200/* long. Caudal 

 alae very large. Four pairs of preanal and 5 pairs of postanal 

 papillae. Spicules 260/* and 115/* long. 



Female 10 to 11 mm. long by 350/* wide at the level of the vulva. 

 Buccal cavity 280 to 300/* long. Tail 170/* long. Vulva (fig. 306a 

 and e) opening on an oval prominence directly behind the middle 

 of the body. Eggs 43/* by 21/*, thick-shelled, embryonated when 

 oviposited. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution. — Africa (Algeria) . 



DISPHARYNX RECTOVAGINATA (Molin, 1860) Cram, 1927 



Synonyms. — Dispharagus rectovaginatus Molin, 1860; Acuaria 

 rectovaginata (Molin, 1860) Railliet, Henry, and Sisoff, 1912. 

 Hosts. — Primary : Faleo ater; secondary : Unknown. 

 Location. — Pro vent riculus. 



-^UhA-%^ 



-*=&' 



fig. .'507. dispharynx rectovaginata. head end and tail of male. after 



Dbaschb, 1884 



Morphology. — Dispharynx (p. 237) : Head continuous with body. 

 Mouth with 2 conspicuous triangular lateral lips, each bearing 2 

 papillae. Body densely striated transversely and twisted in spiral. 

 Two cordons (fig. 307), sinuous and recurrent, not anastomosing. 



Male 4 mm. long by 200/* wide. Posterior extremity (fig. 307) 

 coiled in 3 spiral turns. Caudal alae conspicuous, the margin thick- 

 ened like a cord. Papillae thick, 4 pairs preanal and 4 pairs post- 

 anal, alternately short and long. Left spicule twice as long as right. 



Female 6 mm. long by 400/* wide. Tail short and acutely conical, 

 the anus not far from its extremity. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution, — South America (Brazil). 



DISPHARYNX CRASSISSIMA (Molin, I860) Cram, 1927 



Synonyms. — Dispharagus crassissimus Molin, 1860; Acuaria cras- 

 sissima (Molin, 1860) Railliet, Henry and Sisoff, 1912. 



