Cobb — Nematodes, mostly Australian and Fijian. 27 



twice as wide as the spicula, thence conical to the hair-fine terminus ; papillae as 

 follows, all (?) setose : one submedian setose pair in front of the spicula ; three lateral 

 pairs, one opposite the anus, one where the tail suddenly diminishes in size, and one 

 half-way between ; two ventral submedian rather close together somewhat behind 

 the anus ; and three closely approximated subventral pairs at the end of the large 

 part of the tail ; spicula linear, one and one-half times as long as the anal body- 

 diameter, posterior two-thirds arcuate, proximal ends geniculate ; accessory pieces 

 one-fourth as long as the spicula, and seeming to pretty nearly surround them. 



Hab. — Decaying fungi, Frankfort, Germany. 



18. D. flliformis, Bastian. 2-8 ? "■ °4-i ^2-8 ■^^mm. Cuticula marked by about five 

 hundred transverse striae, also (?) with longitudinal striae ; head truncate ; pharynx 

 prismoid, half as wide as the head, deeper than wide, with three teeth at the base ; 

 bulbs elongated, half as wide as the neck, the median central ; cardiac coUum distinct ; 

 intestine as wide as the bulbs ; rectum two-thirds as long as the anal body-diameter ; 

 tail conical to just behind the middle, thence hair-fine, j^g-i — 3.5 3.5 — ^^ -ssmm. Tail like 

 that of the female ; spicula could not be detected. 



Hab. — England. 



19. D. altaus, Bastian. \. -, ^g-s Te ^t bo™™- Cuticle finely transversely striated ; 

 neck conoid ; head truncate ; lips probably six, but very indistinct ; pharynx half as 

 wide as the head, as deep as wide, with three teeth at the base ; median bulb central, 

 elongated, half as wide as the head ; cardiac bulb spherical, two-thirds as wide as the 

 median bulb and connected with it by a constriction one-fourth as wide as the 

 adjacent part of the neck, that is, only half as wide as the anterior part of the 

 oesophagus ; cardiac coUum distinct ; intestine at once half as wide as the body ; 

 rectum as long as the anal body-diameter ; tail conical to the pointed terminus. 

 Male unknown. 



Hab. — England. 



20. D. micans, Max Schultze. Insufficiently known. 



21. D. liratus, Schneider ( Leptodera lij'ata). Insufficiently known. 



Genus RHABDITIS. 



1. R. filiformis, Biitschli. (?). I am not certain that this little species, of which I 

 have seen only the female, is in reality that described by Biitschli under the name 

 filiformis. The specimens seen by me gave dimensions as follows : %\ \ ^4! '% — % -5411,111. 

 Cuticle plainly but finely transversely striated ; neck nearly cylindrical to behind the 



