134 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Female 14.8 mm. long by 510 ^ wide. Esophagus 1/12.5, tail 1/18.7 

 of total length. Vulva anterior to middle of body, dividing body 

 length in ratio of 11 : 14. Eggs 47/x long by 34/a wide. 



Life history. — Unknown; probably similar to that of Ascaridia 

 gulli (p. 82). 



Distribution. — Africa (Usanga, Eukwa-See). 



Figs. 197-199.' — Subulijra achticauda. 197, Male tail. After Linstow, 1901. 

 198, subulura gracilis. head. 199, male tail. after llnstow, 1899 



SUBULURA (?) GRACILIS (Linstow. 1899) Railliet and Henry, 1914 



Synonym. — Oxysoma gracile Linstow, 1899a. 



Host. — Francolinus, species. 



Location. — Intestine. 



Morphology. — Subulura (p. 104) : Head (fig. 198) with mouth 

 cavity with strongly developed chitinous walls; on the anterior and 

 outer edge 2 small papillae. Esophagus ends in bulb with valve- 

 teeth ; tail long and pointed in both sexes. 



Male 7.9 mm. long by 310/* wide. Esophagus 1/8, tail 1/40 of 

 total length. Spicules 590/x long, sword-shaped. Nine pairs of 

 caudal papillae (fig. 199) of which 3 are preanal, 6 postanal. 



Female 9.48 mm. long by 390/x wide. Esophagus 1/9.3, tail 1/8 of 

 total length. Vulva slightly in front of middle of body, dividing the 

 body length in ratio of 11 : 13. Eggs 57/u. long by 44/a wide. 



