NKMAT0DE PARASITES OF BIRDS 153 



Walton (('. quadrieuape) , muscular esophagus 3;2 to 3.6 mm. long, 

 ventriculus 175/x long, esophageal appendix 800 to 816,u long by 80//, 

 wide, intestinal cecum 2.8 to 2.9 mm. long. 



Male 18 to 2G mm. long by 900/* to 1 mm. wide (A', arcuata) ; 15 to 

 45 mm. long (C. microcephalum). Tail (fig. 222c) curved ventrally; 

 no caudal alae. Cloacal aperture 280 to 240/* from posterior end. 

 About 26 pairs of caudal papillae arranged as follows : near the tail 

 end 4 pairs, 2 being ventral and 2 lateral; immediately posterior to the 

 cloacal aperture 2 pairs of large papillae; anterior to the cloacal 

 aperture at least 20 pairs in more or less regular rows (K. arcuata), 

 or 31 pairs (C. mieroeephalum). Spicules equal. 2.8 to 2.8 mm. long, 

 with curved alae. 



Female 28 to 37 mm. long by 1.1 mm. or less wide (K. arcuata) ; 

 45 to 70 mm. long (C. mieroeephalum). Tail conical; anus about 

 440 to 500/x, from posterior end; 2 lateral papillae, 240/t from tail 

 end. Vulva anterior to middle of body, dividing body length in 

 ratio of 2 : 3 (in Walton's specimen, which was 87.9 nun. long, vulva 

 9.6 mm. from the head). Eggs of variable shape, globular or ellip- 

 tical, averaging 68/* long by 58.5/x wide (the range being 72/a by 48 to 

 64/i down to 64//, by 56 to 64/t) ; shell thin, with irregular surface. 



L ife h istory. — Unkn own. 



Distribution. — North America (United States), Europe (Italy 

 (Rimini, Albona, and Padua)), Asia (India and Russian Turkestan 

 (Lac Kul-Kainar) ), and Africa (Belgian Congo and Transvaal). 



CONTRACAECUM MICROPAPILLATUM (Stossich, 1890) Baylis, 1920 



Synonym. — Ascaris micropapUlata Stossich, 1890. 



Host. — Pelecamis, species, P. crispus, P. erytkrorhynchos, and 

 Glaucionetta el an aula. 



Location. — Intestine. 



Morphology. — Contracaecum (p. 146). The present writer has 

 recently identified this parasite from P. erythrorhynchos and G. 

 clangvla^ but until this time the only reports appear to be those of 

 Stossich in 1890 and 1896. Stossich's description is as follows: 

 Cuticle with dense cross-striations, especially marked directly behind 

 the head where there is a collar-like fold. Lips (fig. 2246) large, 

 the anterior margin projecting laterally as 2 ear-like processes; pulp 

 with median cleft and with 2 anteriorly directed bipartite prolonga- 

 tions. Two papillae on lips. Interlabia large, strongly curved, the 

 anterior ends split into 2 rounded processes. 



Male 20 to 2(5 mm. long. Three pairs of double postanal papillae 

 (fig. 224ff). Preanal papillae numerous, in •_' regular rows. 



Female 35 to 40 mm. lonir. 



