4 ASCAROIDEA 



double terminations. At least twenty-four pairs of preanal 

 papillae. Spicules subequal, non-alate. Vulva in front of 

 middle of body. Vagina runs anteriorly for a short distance, 

 then turns posteriorly. Eggs globular, with thick, pitted 

 shells. 



Hab. Alimentary canal (?) of carnivorous Mammals. 

 Genotjrpe : L. minor Leiper, 1909. 



Leiper, 1909, Abstr. Proc. Zool. Soc. Lond., No. 74, 35; 

 1909, Proc. Zool. Soc. Lond., 742; 1913, Tratis. Soc. Trop. 

 Med. Hyg., vi, 265; Fantham, Stephens & Theobald, 1916, 

 Animal Parasites of Man, London, 467. 



7. Orneoascaris Skrjabin, 1916. 



Cervical alae apparently absent. Lips large, with denti- 

 gerous ridges. Interlabia absent. Oesophagus simple. Tail 

 of male with wide alae and longitudinally and transversely 

 furrowed on its ventral surface. Postanal papillae four 

 pairs, sessile. Preanal papillae pedunculate, not numerous. 

 Spicules equal, transparent. Vulva in anterior half of body. 

 Eggs large and oval. 



Hab. Alimentary canal of Amphibia. 

 Genotype : 0. chrysanthemoides Skrjabin, 1916. 



Skrjabin, 1916, Sci. Res. Zool. Exp. Brit. E. Africa (Dogiel & 

 Sokolow), 1914, Petrograd, i (4), 50, 124. 



8. Trisplculascaris Skrjabin, 1916. 



Lips large, with auricular outgrowtlis at the sides. Denti- 

 gerous ridges and interlabia present. No ventriculus or 

 oesophageal or intestinal caeca. Tail of male curved, with 

 wide alae and very few preanal and postanal papillae, arranged 

 in single lateral rows. Spicules equal, slender. An accessory 

 piece present. Tail of female straight, conically pointed. 

 Vulva in anterior half of body. 



Hab. Alimentary canal of Reptiles. 



Genotype : T. trispicidascaris Travassos, 1920 (= T. 

 helicina (Molin, 1860) of Skrjabin, 1916). 



Skrjabin, 1916, Sci. Res. Zool. Exp. Brit. E. Africa (Dogiel & 

 Sokolow), 1914, Petrograd, i (4), 48, 123; Travassos, 1920, 

 Arch. Esc. Sup. Agric. e Med. Vet., Nictheroy, iv, 15. 



Subfam. 2. ANISAKINAE Railliet & Henry, 1912, etnend. 



Bay lis, 1920. 



Oesophagus may or may not be divided into an anterior 

 muscular portion and a posterior ventriculus of different 

 histological structure, or a muscular bulb. When a ventri- 



