OXYURINAE 23 



Hemprich & Ehrenberg, 1828, Symbolae phtjsicae, Pars 

 Zoologica, decas jirima (Mammalia) ; Turner, 1921, Trans. R. 

 Soc. Trop. Med. Hyg., London, xv, 187; Monnig, 1924, 

 9th and 10th Rep. Dir. Vet. Ed. and Res., Pretoria, 442. 



4. Enterobius Leach, in Baird, 1853. 



Syn. Oxyurias Stiles, 1905 ; Fusarella Seurat, 1916 ; 

 Trypanoxyuris Vevers, 1923. 



Cuticle of anterior end inflated. Lips fairly distinct. 

 Mouth triradiate. Narrow lateral alae present. Oesophagus 

 with a prebulbar swelling and a distinct bulb. Tail of male 

 truncate, with alae supported in front by a pair of pedunculate 

 preanal papillae, and behind by a pair at the extremity of the 

 tail. Two or three pairs of sessile postanal papillae also 

 present. A single spicule, relatively long. No accessory 

 piece.* Vulva in the anterior half of the body. Common 

 trunk of the uterus short. Uterine branches parallel. 



Hab. Large intestine of Primates. 



Genotype : E. {Ascarisl vermicularis (L., 1758). 



Leach, in Baird, 1853, Cat. Entozoa Brit. Mus., 108 ; 

 Seurat, 1916, Compt. rend. Soc. Biol., Paris, Ixxviii, 67 

 (Fusarella) ; Yorke & Macfie, 1922, Trans. R. Soc. Trop. Med. 

 Hyg., London, xv, 148. 



5. Protozoophaga Travassos, 1923. 



Lips not apparent. Oesophagus cylindrical. A well- 

 developed posterior bulb present. Tail of male alate, with 

 two pairs of large lateral papiUae and a conical terminal pro- 

 cess. A single spicule, feebly chitinized. Accessory piece 

 absent. Tail of female conical in the young, long and taper- 

 ing, up to half the total length, in the adult. Vulva in 

 anterior region of body. Uterine branches parallel, rurming 

 anteriorly. 



Hab. Alimentary canal of a Rodent (one species known). 

 Genotjrpe : P. [Oxyuris] obesa (Diesing, 1851). 



Diesing, 1851, Systema Helminthum, ii, 141; Travassos, 

 1923, Folk. Med., Rio de Janeiro, iv, 36. 



* In Trypanoxyuris trypanuris Vevers (1923, Journ. HehninthoL, i, 

 39) there is said to be an annular gubemaculum. It seems possible 

 that this statement is founded upon a misinterpretation. An annular 

 gubernaculum of the type shown in Vevers' figure 2, B, would apparently 

 prevent the extrusion of the spicule. The only other character to 

 distinguish Trypanoxyuris from Enterobius is the presence of a short 

 tail-spike in the male, and this appears too small a character upon 

 wliich to found a new genus. 



