168 STRONGYLOIDEA 



piece present. Vulva close to anus. Uterine branches 

 parallel. 



Hab. Alimentary tract of Bos indicus. (One species 

 known). 



Genot3^pe : A. vryburgi Railliet, 1902. 



Eailliet, 1902, Compt. rend. Soc. Biol., Paris, liv, 107 ; 

 Lane, 1923, Parasitol., xv, 351 ; Ware, 1925, Journ. Comp. 

 Path. Ther., xxxviii, 83. 



Lane suggests that this genus forms an interesting link 

 between the Ancylostoraidae and the Oesophagostominae, 

 and proposes to place it in a separate subfamily, Agriostominae. 

 While we are in agreement with the first of these suggestions, 

 we prefer to retain the genus in the Ancylostominae. 



4. Strongylacantha van Beneden, 1873. 



Anterior extremity bent slightly towards the ventral side, 

 the mouth-opening being obliquely ventral. Buccal capsule 

 small. From the ventral border of the mouth protrude 

 laterally and posteriorly two large, hook-like teeth. Within 

 the dorsal border there is a small, conical, median tooth. 

 Bursa short. Externo-dorsal rays originate at the base of 

 the dorsal ray. Dorsal ray usually undivided, terminating 

 in six small branches, the arrangement of which is subject to 

 much variation. Spicules short, bifurcate in their distal 

 halves. An accessory piece present. Vulva slightly in front 

 of the posterior third of the body. Uterine branches opposed. 



Hab. Intestine of Bats. 



Genotype : 8. glycirrJiiza van Beneden, 1873. 



van Beneden, 1873, Mem. Acad. Roy. Sci. Belg., xl, (1), 13; 

 Seurat, 1920, Bull. Mus. Hist, nat., Paris, xxvi, 618; 1921, 

 Bull. Soc. Hist. nat. Afrique du Nord, Alger, xii, 202. 



Subfam. 2. NECATORINAE Lane, 1917. 



Anterior margin of buccal capsule usually bearing ventral 

 cutting-plates, but without teeth. 



1. Necator Stiles, 1903. 



Anterior end bent dorsally. Mouth-opening guarded by a 

 pair of ventral cutting-plates. Buccal capsule large, infundi- 

 bular. At its base a pair of ventral lancets, a pair of subdorsal 

 teeth and a prominent dorsal cone projecting into the lumen 

 and carrying the dorsal gutter. Bursa with two large lateral 

 lobes and a small dorsal lobe. Externo-dorsal rays relatively 

 long and slender, arising high up on the main dorsal stem. 

 Dorsal ray cleft for almost half its length. Its terminations 



