ONCHOLAIMINAE 125 



without bulb. Caudal end of male with submedian preanal 

 and postanal bristles. Accessory piece single, bipartite. 

 Testes paired. Female genital tubes paired, opposed, out- 

 stretched. Caudal glands and spinneret present. 



Hab. Marine. 



Genotype : C. vulgare Bastian, 1865. 



Bastian, 1865, Trans. Linn. Soc. London, xxv, 158 ; de Man, 

 1890, Mim. Soc. Zool. France, iii, 171 ; 1907, Tijdschr. Nederl. 

 dierk. Vereen., Leiden, x, 237; 1907, Mem. Soc. Zool. France, 

 XX, 66; de Rouville, 1903, Compt. rend. Soc. Biol., Paris, 

 Iv, 1529; Cobb, 1914, Contr. Sci. Nematol., i, 14; Southern, 

 1914, Proc. R. Irish Acad., xxxi, 25. 



Sabatieria, apart from the question whether teeth exist in 

 its pharynx, which none of the observers seems to have been 

 able to determine, appears to differ from the type of Comesoma 

 only in having an accessory piece with a posterior process. 

 Parasabatieria, again, differs from Sabatieria only in the 

 presence of a series of preanal supplementary organs in the 

 male. In view of the uncertainty regarding the presence of 

 teeth, and the slight nature of the other differences, we prefer 

 for the present to regard both these genera as synonyms of 

 Comesoma. 



34. Dagda Southern, 1914. 



Cuticle finely striated. Head separated from body by a 

 constriction, with rounded labial papiUae and a single crown 

 of four bristles. Lateral organs incipient spirals. Pharjaix 

 small, funnel-shaped, containing a dorsal and two subventral 

 teeth. Oesophagus gradually swoUen behind, without bulb. 

 Caudal end of male with eleven median preanal supplementary 

 organs. Accessory piece with two rounded posterior pro- 

 cesses. Testis single. Caudal glands present. Female un- 

 known. Description of genotype based on a single specimen. 



Hab. Marine (in sand). 



Genotype : D. bipapillata Southern, 1914. 



Southern, 1914, Proc. R. Irish Acad., xxxi, 29. 



35. Cyatholaimus Bastian, 1865. 



Syn. Achromadora Cobb, 1913; Nanyionchus Cobb, 1913; 

 Pomponema Cobb, 1917 ; Paracyatholaimus Micoletzky, 1922 

 (as subgenus). 



Cuticle striated, apparently without bristles. Head with 

 six indistinct lips and inconspicuous papillae. Six to ten 

 cephalic bristles present. Lateral organs usually present, 

 spiral or circular. Pharynx cup-shaped, with longitudinal 

 thickenings in its wall anteriorly. A dorsal tooth almost 

 always well developed, and not infrequently ventral or sub- 



