METASTRONGYLIDAE 177 



5. Haemostrongylus Railliet & Henry, 1907. 



SjTi. ? Haemalozoon Leisering, 1865. 



Small but relatively stout forms. Ventral rays of bursa 

 of male fused except at their tips. Antero-lateral rays some- 

 what shorter than, and divergent from, the remaining lateral 

 rays, which are fused proximally. Median stem of dorsal 

 ray stout and relatively elongate ; its terminal branches very 

 short. Externo-dorsal rays originate separately from the 

 dorsal ray and are short. Spicules long and slender. Acces- 

 sory piece absent. Vulva in posterior half of body. Oviparous 

 or viviparous. Embryos with an undulating caudal process, 

 and at the anterior extremity a small ventral button. 



Hab. Circulatory and respiratory systems of Carnivores. 



Genotype : H. [Strongylus] vasorum (Baillet, 1866). 



Baillet, 1866, Hist. nat. des Helminthes des principaiix 

 Mamm. domestiques, Paris, 69; Railliet & Henry, 1907, 

 Compt. rend. Soc. Biol., Paris, Ixiii, 753 ; 1913, Bull. Soc. Path, 

 exot., Paris, vi, 451. 



6. Troglostrongylus Vevers, 1923. 



Antero-lateral and medio-lateral rays of bursa fused to 

 form one large ray. Postero-lateral and externo-dorsal rays 

 separate and of about the same size. Dorsal ray single and 

 thick. Spicules long, tessellated and with pectinate lamellae 

 along their inner edges. Each spicule ends in a palmate 

 expansion, the fingers of which are webbed with cuticular 

 material bearing spines. Vulva just behind the middle of the 

 body. Ovo viviparous. 



Hab. Frontal sinus of Tiger (one species known). 



Genotype : T. troglostrongylus Vevers, 1923. 



Vevers, 1923, Proc. Zool. Soc, London (1922), 906. 



7. Crenosoma Molin, 1861. 



Cuticle, at least towards the anterior end, bearing rings of 

 minute spines. Bursa consists of two large lateral lobes 

 and a dorsal lobe. Antero-lateral ray arises separately fx'om 

 the remaining lateral rays. Externo-dorsal ray arises separ- 

 ately from the dorsal, which is undivided except at its tip. 

 Spicules long. An accessory piece present. Vulva towards 

 the middle of the body. Viviparous. 



Hab. Respiratory tract of Carnivores and Insectivores. 

 Genotype : C. [Strongylus] striatum (Zeder, 1800). 



Zeder, 1800, Naturg. der Eingeweidewurmer, Leipzig, 74 ; 

 Molin, 1801, Mem. R. 1st. Veneto, ix, 435, 437; Eberth, 1863, 

 Unters. iiber Nematoden, Leipzig, Pis. viii, ix ; Stossich, 

 1896, Boll. Soc. Adriat. Sci. nat., Trieste, xvii, 125; Railliet 

 & Henry, 1909, Compt. rend. Soc. Biol., Paris, Ixvi, 86. 



SYN. NEM. N 



