268 Macieay Memorrat Vouume. 
position of the excretory pore unknown ; two wings on the lateral field separated by 
a distance equal to one-fourth the width of the body. The tail is conical, and is arcuate 
‘in the anterior part. The anus is rather prominent. The two equal elongated- 
cuneiform acute arcuate spicula slide in an accessory piece having a backward- 
pointing somewhat hook-shaped process, which if straightened out and extended 
forward would reach nearly to the proxime. The male papille are finger-shaped 
and are arranged as follows : 1, a sublateral pair as far in front of the proximal ends 
of the spicula as the latter are in front of the anus; 2, one submedian pair just in 
front of the proxime; 3, one subventral pair just in front of the anus; 4, one 
submedian pair as far behind the anus as the first pair mentioned above is in front 
of it; 5, and finally, a ventral post-anal group (two pairs?) twice as far from the 
anus as those last mentioned. All these details, as well as many others, are set forth 
on Pl xxxix. 
Hab.—On decaying outside sheaths of young banana plants, Fiji, July, 1891. 
3. D. monhysteroides, Biitschli. } ~—}—3;-; 7mm. The neck diminishes more 
rapidly than in f/icaudatus ; it resembles that species, however, in the structure of 
the pharynx, except that the pharynx of monhysteroides is somewhat narrower. The 
female sexual organs are asymmetrical, there being, however, a posterior sterile 
branch reaching nearly to the anus. 
F[ab.—This species, which much resembles the f/zcawdatus of the same author, 
was found with that species in cow-dung, Germany. 
20 
: 16 13" 20: ‘49 63° : 
4. D. minor, n.sp. ~7-a9 39-322 3mm No markings were observed on the 
euticle, which was without hairs as well. A three-lipped truncate head surmounts 
the conoid neck. ach lip bears a setose papilla. The pharynx is about as deep as 
the head is wide, and in its widest part is half as wide as the head; the single large 
acute dorsal tooth springs from the base of the pharynx and extends nearly half-way 
to the mouth. The cesophagus does not expand to receive the pharynx but assumes 
immediately a width three-fifths as great as the neck and so continues to the ellip- 
soidal median bulb, which is three-fourths as wide as the neck; behind the median 
bulb the cesophagus is narrower, passing through the nerve-ring with a width one- 
third as great as that of the neck but expanding finally to form a bulb somewhat 
smaller than the median bulb. The intestine, which is separated from the cesophagus 
by a distinct cardiac constriction, is rather coarsely granular, and ends in a rectum 
having a length equal to that of the anal body-diameter. The conical tail is exces- 
sively fine near itsend. No caudal glands were seen. The reflexed part of the ovary 
extends nearly half-way back to the inconspicuous vulva. The rather thick-shelled 
eggs are a little more than twice as long as the body is wide, and one-third to 
one-fourth as wide as long, being, therefore, of such a large size that the uterus will 
