128 ASCAROIDEA 



do not consider that the two species concerned can be included 

 in Chromadora, and have accordingly treated Parachromadora 

 as a separate genus. 



38. Bolbolaimus Cobb, 1920. 



Cuticle striated or unstriated, without bristles. Head not 

 distinct, with ( ? six) indistinct lips. Lip region elastic and 

 finely subdivided; its margin "serrated by the forward 

 projection of about fifteen ( ?) papillae with minute bristles 

 outside the serrations. The appearance is as if each papilla 

 is armed with a pair of minute bristles very difficult to see." 

 Three crowns of short cephalic bristles present. Lateral 

 organs inconspicuous, incipient spirals. Pharynx with a wider 

 anterior portion and a narrow, funnel-shaped posterior portion, 

 the former containing a relatively large, protrusible, dorsal 

 tooth and a ventral tooth, which, in the type, is smaller, at 

 its base. (According to the figures, there should be two 

 subventral teeth). Oesophagus with an anterior phar3rngeal 

 bulb, and an elongate posterior bulb with a transverse division 

 in its musculature. Caudal end of male with six incon- 

 spicuous preanal supplementary organs. Spicules stoutish, 

 tapering. Accessory pieces ( ? two) present. Testis, accord- 

 ing to formula, single, anterior, outstretched; "testes" 

 mentioned in the plural in text. Female genital tubes paired, 

 opposed, outstretched. Caudal glands and spinneret present. 



Hab. Marine (in sand). 



Genotype : B. j^ellucidus Cobb, 1920. 



Cobb, 1920, Contr. Sci. Nematol., ix, 319 and key. 



39. Cobbia de Man, 1907. 



Cuticle striated, with bristles. Head slightly distinct, with 

 six bristles. Lateral organs circular. Buccal capsule cup- 

 shaped, armed with three teeth (one dorsal, two subventral). 

 Spicules with a very small spur close to their tips. Accessory 

 piece without posterior process. Female genital tube single, 

 anterior. 



Hab. Marine. 



Genotype : C. trefusiaeformis de Man, 1907. 



de Man, 1907, Tijdschr. Nederl. dierk. Vereen., Leiden, x, 

 232. 



Subfam. 2. DESMODORINAE nov. 



Pharynx variable in shape, typically containing a single ! 

 forwardly-directed (dorsal) tooth. Oesophagus with or with- 

 out posterior bulb. 



This subfamily is more or less equivalent to the Desmodorini j 

 of Filipjev. 



