Coss— Nematodes, mostly Australian and Fijian. 277 
pharynx, then convex-conoid to the mouth, which is one-fourth as wide as the base 
of the neck ; lip-region half as wide as the prolate cardiac bulb ; only traces of lips ; 
no sete or papille on the head; cesophagus in the anterior half fusiform and about 
half as wide as the neck, thence narrowing gradually to a tube one-fifth as wide as 
the neck ; cardiac sucking bulb one-half as wide as the neck ; cardiac collum distinct, 
the constriction deep; intestine thick-walled, four-fifths as wide as the body, with a 
thick transparent lining ; cardia small, the cavity large ; rectum narrow, nearly twice 
as long as the anal body-diameter, separated from the intestine by a distinct constric- 
tion; ventral excretory pore somewhat behind the middle of the neck (12°5 %); 
wings of the cuticle nearly as far apart as the opposite sides of the pharynx ; tail 
conoid from the distinct anus, its terminus hair-fine ; near the anus two lateral glands 
which empty through lateral pores at the beginning of the second sixth of the tail ; 
vulva depressed ; vagina very short; reflexed ovaries reaching half-way back to the 
vulva; eggs as long as the body is wide and two-thirds as wide as long. Sketches of 
this little species are given on PI. xxxvi. 
Hab.—Grass after rain, Sydney, New South Wales, Australia. 
2. R. pellioides, Biitschli. (i stormm, Cuticle transversely striated ; 
neck conoid, tapering more rapidly near the head; head truncate; lips six, hemi- 
spherical, each with a papilla; pharynx simple, prismoid, one-third as wide as the 
head ; median and cardiac bulbs powerful, subspherical, two-thirds as wide as the 
neck, the median situated in the middle of the neck ; cesophageal tube in front of the 
median bulb half as wide as the neck, behind the bulb one-third ; ventral excretory 
pore somewhat nearer the cardiac than the median bulb; intestine rather thick-walled, 
three-fourths as wide as the body ; rectum considerably longer than the anal body- 
diameter ; tail concave-conoid ; vulva inconspicuous ; reflexed portions of the ovaries 
reaching half-way back to the vulva; eggs nearly as long as the body is wide and 
two-thirds as wide as long; viviparous or ovoviviparous; lateral pores near the middle 
of the tail. eee omm. Male tail conical, completely enveloped in the bursa, 
which springs from opposite the middle of the spicula; ribs of the bursa nine, in three 
similar rather indistinct groups because the spaces between the groups are not much 
greater than that between the individual ribs of a given group; anterior group just 
in front of the anus, posterior group near the end of the tail; spicula linear, tapering 
gradually from near the proxime to an acute point, more than twice as long as 
the tail; proxime cephalated by constriction. Detailed drawings are given on 
Pl. xxxviil. 
H{ab.—Cosmopolitan ; Europe, Australia, Fiji. I think there can be no doubt 
that this worm recorded now from Australia and Fiji is identical with Biitschli’s 
species. I have found it on fresh grass and on dead sheaths of banana plants. 
