Cobb — Nematodes, mostly Australian and Fijian. 33 



Spicula longer than the anal body-diameter. 12. tenuicauda. 



Spicula about equalling the anal body-diameter in length. 

 Setae none. 



Anterior extremity rounded 2. papillata 



Anterior extremity truncate. 



Accessory pieces one-fourth as long as spicula 4. glomerans. 



Accessory pieces rudimentary 3. affirm. 



Setae 6 10. filicaudata. 



Or, 

 Set* 6-10. 



Habitat marine , 6. marina. 



Habitat not marine. 



Spicula as long as the anal body-diameter, tail 22 % 10. filicaudata. 



Spicula Ion ger than the anal body-diameter, tail 9 % 12. tenuicauda. 



Spicula shorter than the anal body-diameter, tail 16 % 11. setifera. 



Setae none. 



Accessory pieces one-fourth as long as the spicula 4. glomerans. 



Accessory pieces rudimentary. 



Length 3'2 mm., head rather rounded 2. papillata. 



Length 1'4 mm., head truncate 3. affinis. 



1. T. salsa, Bastian. °-7 ? ""2 '^3-8 ^2-8 si^'m"- The cuticle is marked by about three 

 hundred and fifty transverse striae. The head is rounded in front and bears two 

 lateral papillae. The oesophagus is cylindrical ; the intestine is three-fifths as wide as 

 the body ; rectum half as long as the anal body-diameter. The junction of the 

 oesophagus with the intestine is such as to give rise to the appearance of a " collar" 

 or pseudo-bulb. The lateral fields are one-fifth as wide as the body. Terminus one- 

 sixth as wide as the base of the tail. Male unknown. 



Hab. — Found on roots (A Ruppia maritima, in brackish water, England. 



26 



2. T. papillata, Btitschli. i°6 2-1 ^l"? 'Xs — %l 3-2 mm. Cuticula striated; head rounded 

 in front, bearing three rows of papillae, of which one represents the row of cephalic 

 setse ; oesophagus conoid, anteriorly less but posteriorly more, than one-half as wide as 

 the corresponding pait of the neck ; cardiac constriction exceedingly deep ; tessellated 

 intestine at first only one-fourth as wide as the body; rectum half as long as the anal 

 body-diameter ; juncture of the oesophagus with the intestine such that a very oblate 

 pseudo-bulb is formed ; terminus one-sixth as wide as the base of the tail ; eggs as 

 long as the body is wide ; ovaries reaching about half-way back to the vulva. 

 1-6 2-4 2-7 2-8 — 2^ ^'^ ™™- Spicula cqualliug in length the anal body-diameter, with a central 



stiffening piece ; accessory pieces rudimentary. 



