NEMATODE PAEASITES OF BIRDS 101 



as an asymmetrical papilla, was a symmetrical pair, making pairs 

 of postanal papillae, 5 of them lateral. The granulations, very 

 refractive, covered the ventral surface of the body from the caudal 

 extremity anteriorly to the level of the sucker (Stossich figures them 

 only in postanal region). Esophagus 3.9 mm. long; preanal sucker 

 232/* long by 183/* wide (external measurements). Spicules at least 

 2.5 mm. long (free ends apparently broken). 



Female with a caudal extremity forming an elongated cone with 

 an obtuse apex. 



Life history. — Unknown; presumably somewhat similar to that 

 of A. galli (p. 82). 



Distribution. — Africa (Gambia and (new record) Potchefstroom, 

 South Africa). 



ASCARIDIA TRILABIUM (Linstow, 1904) Railliet and Henry, 1914 



Figs. 143-144. — 143, Ascaridia TRILABIUM. Male tail. After Linstow, 1904. 144, 



ASCAIUDIA ANSEBIS. MALE TAIL. AFTER SCHWARTZ, 1925 



Synonym. — Heterakis trilabium Linstow, 1904. 



Host. — Centropus sinensis. 



Location. — Intestine. 



Morphology. — Ascaridia (p. 77): Cuticle annulate; head with 3 

 semicircular lips, the dorsal with 2 papillae, the others with 1 

 papilla. Esophagus 1/13 of total length. 



Male 2G mm. long by 690/* wide. Tail 1/49 of body length. Ten 

 pairs of caudal papillae (fig. 143), of which 4 are preanal, 6 postanal. 

 Preanal sucker circular. Spicules subequal, 1.95 and 1.97 mm. long, 

 the free end rounded. 



Female 39 mm. long by 1.1 mm. wide. Tail 1/58 of total length, 

 conical, attenuated, with small digitate prolongation. Vulva 

 posterior to middle of body, dividing body length in ratio of 8:5. 

 Eggs 81/* long by 47/* wide, with thick smooth shells. 



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



Distribution. — Asia (Ceylon (Horana)). 



