TRICHONEMINAE 169 



thickness posteriorly, are prolonged as delicate triangular 

 plates over the anterior portion of the oesophageal funnel. 

 Three wedge-like septa or " teeth " project from the funnel 

 into the buccal capsule. Dorsal gutter absent. Prebursal 

 papillae very long and ray-like, within the bursa proper. 

 Dorsal ray cleft almost to origin of externo-dorsal rays. Two 

 accessory branches spring from each branch of the dorsal ray. 



Hab. Large intestine of Equidae. 

 Genotype : O. capitatus Looss, 1900. 



Looss, 1900, Centralbl. f. Bakt. (I), xxvii, 191 ; Ihle, 1922, 

 Rep. Comm. Sclerostom. Holland, I, Zool. i, 105. 



6. Amira Lane, 1914. 



Syn. Khalilia Neveu-Lemaire, 1924. 



Cuticle thick, sometimes with bosses in front of the bursa in 

 the male. External and internal leaf-crowns present. Buccal 

 capsule very shallow, with thick walls. Oesophagus hourglass- 

 shaped, with a large oesophageal funnel and lined almost 

 throughout with thickened cuticle. Dorsal lobe of bursa may 

 be enormously elongate. Prebursal papillae long and slender, 

 appearing as additional rays. All the bursal rays relatively 

 long and slender, more particularly the dorsal, which is cleft 

 almost to its base. Accessory branches of dorsal ray tjrpically 

 two pairs, arising from the bifurcate portion. One pair may be 

 much reduced. Spicules extremely long and filiform. An 

 accessory piece present. Vulva close to anus. Uterine 

 branches parallel. 



Hab. Alimentary tract of Elephants. 



Genotype : A. [Cylicostomum] pileata (Railliet, Hem-y & 

 Bauche, 1914). 



Railliet, Henry & Bauche, 1914, Bull. Soc. Path, exot., Paris, 

 vii, 208; Lane, 1914, Ind. Journ. Med. Res., ii, 394; and 

 1915, iii, 107. 



7. Quilonla Lane, 1914. 



Syn. Evansia Railliet & Henry, 1913, nee Scott, 1906 ; 

 Nematevansia Ilile, 1919 ; Paraquilonia Neveu-Lemaire, 1924. 



External leaf-crown composed of a few long elements. 

 Internal leaf-crown present or absent. Buccal capsule a wide, 

 shallow ring, its wall widely separated from the mouth-cavity, 

 which is bounded by the elements of the leaf-crowns. The 

 latter extend backwards and become continuous with the 

 cuticle lining the oesophageal funnel. There may be teeth at 

 the base of the buccal capsule. Lateral rays of bursa rather 

 divergent from each other. Externo-dorsal rays spring from 

 the median stem of the dorsal ray near its base. Dorsal ray 

 cleft for about one-third of its total length. Two small 



