STRONGYLINAE 153 



9th and 10th Rep. Dir. Vet. Educ. and Res., Pretoria (1923), 

 458. 



5. Oesophagodontus Railliet & Henry, 1902. 



Syn. Pseudosclerostomitm Quiel, 1919. 



External and internal leaf-crowTis present. Mouth-coUar 

 depressed. Buccal capsule goblet-shaped, with a circular 

 ridge posteriorly. The lining of the oesophageal funnel is 

 thrown into three small folds or teeth which do not project 

 into the buccal capsule. Dorsal gutter absent. Bursa entire. 

 Dorsal ray cleft to the point of origin of the accessory branches. 

 Postero-lateral ray with an accessory branch. Vulva relatively 

 distant from anus. Uterine branches parallel. 



Hab. Large intestine of Equidae. 



Genotype : O. [Sclerostoma] robustus (Giles, 1892). 



Giles, 1892, Sci. Mem. Med. Off. Army, India (7), 26 ; Railliet 

 & Henry, 1902, Compt. rend. Soc. Biol., Paris, liv, 110; Ihle, 

 1922, Rep. Comm. Sclerostom. Holland, I, Zool. i, 103. 



6. Equinurbia Lane, 1914. 



Fairly stout worms. External leaf-crown composed of 

 numerous elements of two lengths, two short elements being 

 placed between each pair of long elements. Mouth-opening 

 roughly circular. Buccal capsule subglobular, with a long 

 dorsal gutter. Externo-dorsal rays of bursa with two 

 accessory branches and a dorsal boss. Dorsal ray cleft for 

 about half its length. The externo-dorsal rays and two pairs 

 of accessory branches of the dorsal ray spring from the median 

 stem of that ray. Vulva prominent, close to anus. Uterine 

 branches parallel. 



Hab. Alimentary tract of Elephants. 



Genotjrpe : E. [Sclerostoma'] sipunculiformis (Baird, 1859). 



Baird, 1859, Proc. Zool. Soc, London, 425 ; Lane, 1914, Ind. 

 Journ. Med. Res., ii, 381. 



7. Choniangium Railliet, Henry & Bauche, 1914. 



Syn. Asifia Lane, 1914. 



Anterior extremity obliquely truncate, so that the mouth- 

 opening faces somewhat dorsaUy. External leaf-crown com- 

 posed of numerous long, fine elements. Internal leaf-crown 

 absent. Buccal capsule elongate, narrowing posteriorly. 

 No teeth in the buccal capsule, but paired hemispherical 

 bosses are present on the internal surface of its wall. Dorsal 

 gutter apparently absent. Postero-lateral ray of bm-sa with a 

 well-developed accessory branch. Externo-dorsal rays and a 

 pair of accessory branches of the dorsal ray both spring from 

 the median dorsal stem, the accessory branches being cleft 



