90 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



to Linstow (fig. 122), 9 pairs of caudal papillae, of which 2 preanal, 

 7 postanal; according to Bayiis and Daubney, 13 pairs, of which 

 6 are preanal, 7 postanal. Spicules equal, 950/a long by 42/z wide, 

 alate. 



Female 57 mm. long by 1.76 mm. wide, according to Linstow; 

 18 to 40 mm. long by 1.1 to 1.2 mm. wide according to Bayiis and 

 Daubney. Tail 1/98 of body length. Vulva 20 mm. from anterior 

 end in the specimens 38 to 40 mm. long; vagina short, transverse. 

 Eggs 85 to 91/a long by 58 to 62/x wide, with thick shells. 



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



Distribution. — Africa (Langenburg, Nyassa-See) and Asia 

 (India). 



ASCARIDIA CYLINDRICA (Blome, 1909) Railliet and Henry, 1914 



Synonym. — Heterakis cylindriea Blome, 1909. 



Host. — Tetrao urogallus. 



Location. — Small intestine. 



Morphology. — Ascaridia (p. 77) : Body cylindrical, the anterior 

 and posterior halves of body equally wide. Lateral membranes ab- 

 sent. Head set off from body. Lips of unequal size, each lip carry- 

 ing on its inner surface an anteriorly directed " tooth-plate " (Zahn- 

 platte). 



Male 43 mm. long by 1.3 mm. wide. Caudal alae (fig. 123) well 

 developed. Ten pairs of papillae; in an occasional specimen there 

 may be an additional unpaired papilla on one side (anterior to 

 the most anterior pair). Preanal sucker with heavy chitinous ring. 

 Spicules unequal in length (fig. 124) and thickness, according to 

 Blome's description, but his figure shows them equal. Through- 

 out the anterior half of their length they are surrounded by a 

 sheath, the inner surface of which is neatly folded, giving in optical 

 section a dentate appearance. 



F&male 55 mm. long by 1.5 mm. wide. Tail pointed. 



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



Distribution. — Europe (Germany (Breslau)). 



Skrjabin (1916ff) has made a study of this species from the 

 moor hen; the present writer, however, has been unable to obtain 

 his article. 



ASCARIDIA DOLICHOCERCA (Stossich. 1902) Railliet and Henry, 1911 



Synonym,. — Heteralcis dolichocerca Stossich, 1902. 



Host. — Circus s pilot h o rax. 



Location. — Not given. 



Morphology. — Ascaridia (p. 77) : Head distinct from body, with 

 3 large lips. Lateral membranes wide. Length of specimens 25 

 to 30 mm. 



