NEMATODE PARASITES OF BIRDS 99 



Female 41 mm. Long. Vulva at about anterior third of body (30 

 mm. from tail end). 



Life history.- — Probably similar to that of A. r/aJIi (p. 82). 

 Distribution. — South America (Brazil). 



ASCARIDIA STRELNIKOWI Skrjabin. 1916 



Host. — Tina/m us, species. 



Location. — Intestine. 



Morphology. — Ascaridia (p. TT) : Cuticle with fine transverse 

 striations. Lips (fig. 140#) short, wide, made up of 2 lateral promi- 

 nences and a rounded anterior lobe. 



Male 40 to 43 mm. long by 1.1 mm. wide. Dorsal lip 13G/* long 

 by 250/* wide. Esophagus 2.38 mm. long by 220/* wide. Caudal ex- 

 tremity (fig. 140&) conical, pointed; cloacal aperture 600/* from 

 posterior end. Preanal sucker circular, 340/* in diameter, with chi- 

 tinous ring; its posterior border, which has a median papilla, is 870/* 

 from caudal extremity. Thirteen pairs of caudal papillae, of which 

 8 are preanal, 5 postanal, and in addition 2 pairs of small papillae 

 located at some distance from the others, anterior to the preanal 

 sucker. Spicules equal, 3.4 mm. long alate. 



Female 45 to 52 mm. long by 1.8 mm. wide. Dorsal lip 187/* long 

 by 37/* wide. Esophagus 2.72 mm. long by 600/* wide. Caudal ex- 

 tremity rounded, with styloid appendage 40/* long. Anus 1.1 mm. 

 from posterior end. Vulva in middle of body (in female 50 mm. 

 long, the vulva 25.5 mm. from anterior end). Eggs 68/* long by 51/* 

 wide. 



Life history. — Probably similar to that of A. galli (p. 82). 



Distribution. — South America (Paraguay). 



ASCARIDIA STROMA (Linstow, 1899) Railliet and Henry, 1914 



Synonym. — Heterakis stroma Linstow, 1899. 



Hosts. — Grus {T etrapteryx) paradisea, G. antigone and G. com- 

 munis. 



Location. — Xot given. 



Morphology. — Ascaridia (p. 77) : Head with 3 lips, the dorsal with 

 2 papillae, the others 1 papilla. Wide lateral membranes at head end 

 of body. 



Male 25 mm. long by 800/* wide; esophagus 1/16, tail 1/47 of total 

 length. Preanal sucker circular with wide rim. Ten pairs of papil- 

 lae (fig. 141), of which 3 are preanal, 1 adanal, and 6 postanal. The 

 adanal pair and 2 pairs directly posterior to it are lateral and have 

 very large bases. 



Female 5G nun. long by 1.7 wide. Tail 1/117 of total length, 

 with digitiform prolongation. Eggs 172/* long by 14G/* wide. 



