10 ASCAROIDEA 



15. Lobocephalus Diesing, 1838. 



Syn. Heterocheilus Diesing, 1839. 



Lips bilobed, two of them truncate in front, the third 

 broader and somewhat longer. Behind the lips a cuticular 

 , collar composed of nine longitudinal folds. Three of these 

 folds large, alternating with pairs of smaller folds. Oesophagus 

 with a small distinct bulb. An intestinal caecum present. 

 Tail of male pointed. Spicules alate. Tail of female tapering. 

 Vulva apparently posterior. Eggs oval. 



Hab. Stomach and small intestine of Manatee (one species 

 known). 



Genotype : L. heterolobus Dies., 1838 {= Heterocheilus 

 truncatus Dies., 1839). 



Diesing, 1839, Ber. u. d. Versaniml. deutsch. Naturf. u. 

 Aerzte in Prag, 189 ; 1839, Aim. Wien. Mus. Naturg., ii, 229 ; 

 Stiles & Hassall, 1899, Rep. Fur Seal Invest., Washington, 

 Part III, 107. 



16. Typhlophoros v. Linstow, 1906. 



Lateral alae present. Lips triangular, narrowed at base, 

 with pulp widened in front. Behind the lips a cuticular 

 collar of sixteen transversely striated longitudinal folds. An 

 intestinal caecum present. Tail of male with four pairs of 

 preanal papillae. Spicules equal. Tail of female with two 

 rounded preanal projections. Vulva somewhat in front of 

 middle of body. Eggs thick-shelled. 



Hab. Stomach of Gharial (one species known). 

 Genotjrjie : T. lamellaris v. Linstow, 1906. 



V. Linstow, 1906, Jotirn. and Proc. Asiat. Soc. Bengal, ii, 270. 



17. Heligmus Dujardin, 1845. 



Lips rounded, not very distinct. Oesophagus club-shaped, 

 with a ventriculus. Tail of male recurved, with a double row 

 of twelve to thirteen ventral papillae. A single, very long, 

 tubular, flexible, transversely striated and broadly alate 

 spicule. Vulva towards anterior third of body. 



Hab. Intestine of Fishes (one species known). 

 Genotype : H. longicirrus Dujardin, 1845. 



Dujardin, 1845, Histoire naturelle des Helminthes, Paris, 

 136, 145. 



From Dujardin's description it appears possible that this 

 genus may be a member of the subfamily Anisakinae, but the 

 characters given are insufficient to establish definitely its 

 position. 



