METASTRONGYLIDAE 175 



Hab. Alimentary tract of Snakes and Lizards. 

 Genotype : K. mucronatus Molin, 1861. 



Molin, 1861, Mem. R. 1st. Veneto, ix, 436, 538; Baylis and 

 Daubney, 1922, Mem. Ind. Mus., vii, 331 ; Daubney, 1923, 

 Parasitol., xv, 67; Ortlepp, 1923, Journ. HelminthoL, i, 165. 



Ortlepp (1923) proposed the genus Occipitodontus for 

 0. fimbriatus (= Kalicephalus wUleyi v. Linstow, 1908, 

 Baylis and Daubney, 1922, Daubney, 1923), on account of 

 the presence in this form of a rudimentary leaf-crown at the 

 entrance to the mouth and the occurrence of three small teeth 

 in the oesophageal funnel. Indications of a leaf-crown are 

 present in other species of Kalicephalus, and we do not consider 

 the other character mentioned of sufficient importance to 

 warrant the separation of a species agreeing so closely in all 

 other characters with the remaining members of the genus 

 Kalicephalus. A similar position, as regards the occasional 

 presence of teeth in some of the members of a genus, is found 

 in the genera Oesophagostomum and Olobocephulus. 



Fam. 4. METASTRONGYLIDAE Leiper, 1908. 



Buccal capsule much reduced or absent. Bursa of male 

 may be relatively well developed or vestigial, with a correspond- 

 ing degree of development of the bursal rays. Parasites of 

 the respiratory and circulatory systems, and of the cranial 

 sinuses, of Vertebrates. 



1. Metastrongylus Molin, 1861. 



Mouth with six " lips," of which the two lateral are the 

 largest. Bursa small, with its greatest diameter antero- 

 posteriorly. The wall of the bursa is thickened in its posterior 

 half. AU the bursal rays are very stout, except the dorsal 

 and externo- dorsal. The tip of the antero -lateral ray bears 

 a large, lobulate swelling. Spicules long, terminating in 

 simple hooks. Tail of female recurved ventrally. Vulva 

 immediately in front of anus. Uterine branches parallel. 

 Eggs contain embryos when laid. 



Hab. Respiratorj'^ passages of Suidae and (accidentally) of 

 Man and Ruminants. 



Genotype : 31. [Strongylus] elongatus (Dujardin, 1845). 



Dujardin, 1845, Histoire nat. des Helminthes, Paris, 127 ; 

 Molin, 1861, Mem. R. 1st. Veneto, ix, 437, 588; Railliet & 

 Henry, 1907, Compt. rend. Soc. Biol., Paris, Ixiii, 751; 1911, 

 Bull. Soc. Path, exot., Paris, iv, 695; Gedoelst, 1923, Bull. 

 Soc. Path, exot., Paris, xvi, 622. 



