84 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



% 



Female 39 mm. long by 1 mm. wide. 



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



Distribution.South. America (Brazil). 



ASCARIDIA AUSTRALIS (Linstow, 1898) Railliet and Henry, 1914 



Synonym. — Heterakis australis Linstow, 1898. 



Host. — Macropygia nigrirostris. 



Location. — Small intestine. 



Morphology. — Ascaridia (p. 77) : Cuticle with cross-striations. 

 Specimens imperfect so that total length could not be determined. 

 Both sexes with finger-like appendage. 



Male with large preanal sucker with cutinous (chitinous) rim; 

 13 pairs of large closely set papillae (fig. 114). Spicules 630/* long 

 by 2.4/* wide, with rounded ends. 



Eggs thick-shelled, 75/* long by 42/* wide. 



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



Distribution. — Oceania (Bismarck- Archipelago (Ralum)). 



ASCARIDIA BUREAUS (Linstow, 1884) Railliet and Henry, 1914 



Synonym. — Heterakis borealis Linstow, 1884. 



Hosts. — Lagopus mutus and Tetrao lapopus. 



Location. — Intestine. 



Morphology. — Ascaridia (p. 77) ; 



Male only, 45 mm. long by 1.3 mm. average width. Preanal 

 sucker large, 340/* in diameter, its posterior rim interrupted by a 

 papilla (fig. 115) ; from the sucker there radiate out to the edge of 

 the body wide lines, evidently muscular structures. Ten pairs of 

 papillae, 1 pair very large, projecting at an angle at a level just 

 anterior to the cloacal aperture; 2 other pairs preanal and 7 pairs 

 postanal, all quite small. Spicules 3.6 mm. long, the left slightly 

 curved, the right described and figured as bent hook-like. 



Female unknown. 



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



Distribution. — Asia (Siberia (Kamtschatka) ). 



ASCARIDIA BRASILIENSIS (Magalhaes, 1892) Railliet and Henry, 1912 



Synonyms. — Heterakis brasiliensis Magalhaes. 1892. 



Hosts. — Gallus gallus. 



Location. — Small intestine. 



Morphology. — Ascaridia (p. 77) : Yellowish worms, thinned to- 

 ward the ends, especially posteriorly. Mouth with 3 large unequal 

 lips, each with distinct submedian papillae. Esophagus 2 mm. long. 



Male 24 mm. long by 600/* wide. Sucker circular, 90//, in internal 

 diameter, 110/* in external diameter, with chitinous rim interrupted 



