186 STRONGYLOIDEA 



ray short, slender and widely divergent from the latero- 

 ventral. Latero- ventral and antero-lateral rays extremely 

 stout, close together and parallel. The remaining rays are 

 all slender. Dorsal ray short, bifurcate terminally, with 

 three pairs of papillary terminations. Prebursal papiUae 

 present. Spicules very long, slender and united for almost 

 their whole length. Accessory piece apparently absent. 

 Vulva; close to anus, prominent, with chitinoid lips. Vagina 

 very long, anteriorly directed. Eggs of normal size, i.e. 

 less than 150 /x in length. 



Hab. Stomach and small intestine of Ruminants, Pig and 

 (doubtfully) Man. 



GenotyiJe : M. [Strongijhis] digitatus (v. Linstow, 1906). 



V. Linstow, 1906, Sijolia Zeylanica, iii, 168; Railliet & 

 Henry, 1912, Bull. Soc. Path, exot., Paris, v, 38; Neveu- 

 Lemaire, 1914, Bull. Soc. Zool. France, xxxix, 293 ; Morishita, 

 1922, Annot. Zool. Japon., x, 89; Cameron, 1923, Journ. 

 Helminthol., i, 71. 



16. Histiostrongylus Molin, 1861. 



Cuticle of anterior end swollen and with a campanulate 

 cuticular collar, armed with large, simjile or bifurcate, back- 

 wardly-directed sj)ines. Mouth small and circular. Oesoph- 

 agus short, club-shaped. Bursa with large lateral lobes and 

 a small dorsal lobe. Ventral rays large, equal in size, sUghtly 

 divergent from each other. Antero-lateral ray divergent 

 from the other lateral rays, which have a common stem. 

 Externo-dorsal ray markedly shorter and more slender than 

 the lateral rays. Dorsal ray with a pair of small lateral 

 branches, and bifurcate at its tip. Spicules rather long, with 

 slightly expanded terminations. An accessory piece present. 

 Caudal end of female with a slender terminal spike and two 

 small subventral processes. Vulva behind the middle of the 

 body. Uterine branches opposed. Eggs contain embryos 

 when deposited. 



Hab. Alimentary tract of Bats. 

 Genotj'pe : H. coronatus Molin, 1861. 



Molin, 1861, 3Iem. R. 1st. Veneto, ix, 611 ; Travassos, 1918, 

 Rev. Soc. Braz. Sci., iii, 194 ; 1921, il/em. Inst. Oswaldo Cruz, Rio 

 de Janeiro, xiii, 72 ; Boulenger, 1926, Parasitol., xviii, 87. 



Parts of this diagnosis, especially those parts relating to 

 the arrangement of the bursal rays, are derived mainly from 

 Boulenger (1926), who has pointed out that the two species, 

 H. tipiila (van Beneden) and H. paradoxus Travassos, 

 provisionally referred by Travassos (1918) to Histiostrongylus, 

 are not congeneric with H. coronatus, and has proposed for 

 them the name Anoplostrongylus. 



i 



