82 ASCAROIDEA 



single, anterior, reflexed. Female unknown. Description 

 based on a single male specimen. 



Hab. Intestine of the larva of a Lamellicorn beetle, living 

 under cowdung, Australia. 



Genotype : C. papilliger Cobb, 1920. 



Cobb, 1920, Contr. Sci. Nematol., ix, 245 and key. 



17. Trefusia de Man, 1893. 



Cuticle unstriated, without bristles, except towards anterior 

 end. Head trilobed, with bristles. Lateral organs elliptical. 

 Oesophagus cylindrical. Two spicules and an accessory 

 piece present. Testes paired. Female genital tubes paired, 

 opposed, reflexed. 



Hab. Marine. ' 



Genotype : T. longicauda de Man, 1893. 



de Man, 1893, Mem. Soc. Zool. France, vi, 84 ; Micoletzky, 

 1922, Arch. f. Naturg., Abt. A, Ixxxvii, 165. 



18. Tripyloides de Man, 1886. 



Cuticle unstriated, usually with bristles. Lateral alae 

 apparently absent. Head with three large rounded lips, 

 followed by strong bristles. Lateral organs spiral. Buccal 

 capsule small, distinct from oesophagus, funnel-shaped in 

 front, and with two lateral pocket-like expansions behind. 

 Oesophagus slightly swollen behind. Male with a median row 

 of preanal papillae, extending to the anterior end of the body. 

 Two equal spicules and an accessory piece, having a median 

 plate and two lateral pieces. Testis single. Female appar- 

 ently unknown. Caudal glands present. 



Hab. Marine. 



Genotype : T. vulgaris de Man, 1886. 



de Man, 1886, Anatomische Untersuchungen iiber freilebende 

 Nordsee-Nematoden, 60. 



19. Bathylaimus Cobb, 1894, wee Daday, 1905, 7iec Ditlevsen, 



1919. 



Cuticle unstriated, but with bristles. Lateral alae appar- 

 ently absent. Head with twelve bristles and three lips, the 

 latter with bidentate borders, each armed with two projecting 

 bristles. Lateral organs spiral. Buccal capsule composed 

 of two portions, a long anterior and a shorter posterior, of 

 uniform diameter. Oesophagus club-shaped. Caudal end 

 of male without alae or papillae. Two large accessory pieces 

 present. Caudal glands present. 



Hab. Marine. ' 



Genot5rpe : B. australis Cobb, 1894. 



