276 Macteay Menmorrat Vouume. 
twice as wide as the spicula, thence conical to the hair-fine terminus ; papille 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. filiformis, Bastian. $2 “5-5 emm. Cuticula marked by about five 
hundred transverse striz, also (?) with longitudinal striz ; 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 collum 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. $3-7-ssgs—n1 “™m. Tail like 
that of the female ; spicula could not be detected. 
Ffab.—England. 
19. D. albus, Bastian. $7“. °* “tf comm Cuticle finely transversely striated ; 
Wy y, 
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 
cesophagus ; cardiac collum 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 tivata). Insufticiently 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: gptot ie ‘54mm. 
Cuticle plainly but finely transversely striated ; neck nearly cylindrical to behind the 
