Coss—WVematodes, mostly Austrahan and Fitan. 261 
innervated, on the anterior third of the tail, the posterior pair being near the end of 
the anterior third and the other pair half-way between that point and the anus. 
There are other papillee (?) faintly visible on the dorsal side of the tail and elsewhere. 
Hab.— Roots of plants, damp soil, Moss Vale, New South Wales. 
84 
; B DEI 7en 2S unbe : . . 
13. M. longicaudatus, n.sp. 33-97-32 37-19 '6te19mm. Behind the nerve-ring the 
neck is conoid; but anteriorly it becomes slightly convex-conoid. The small elliptical 
lateral organs are placed close behind the outer 
a@, mouth. 
b, labial papilla. 
c, lateral organ. 
d, dorsal tooth. 
e, excretory pore. 
J, nerve-ring- 
gy, pharynx. 
h, pharyngeal muscles. 
i, J, esophagus. 
k, cardiac region. 
/, intestine. 
m, labial papilla. 
n, lateral organ. 
0, ovum. 
p, dorsal tooth. 
q, pharynx. 
r, egg with shell. 
8, vulva. 
t, blind end of posterior ovary. 
u, bend in ovary. 
v, anus. 
w, three caudal glands. 
x, one of two papillze on the end 
of tail. 
y, outlet for caudal glands. 
row of papille, their long diameter being placed 
transversely ; when seen in profile they appear 

as slits from which a process is seen to pass 
inward and backward. The pharynx, which is 
three-fifths as wide as the head and three times 
as long as wide, bears a rather small dorsal 
tooth near the middle, and very inconspicuous 
rudimentary projections on the ventral side. 
The vestibule is shorter than usual. The ceso- 
phagus is three-fifths as wide as the neck, its 
lumen being conspicuous because of the thick- 
ness of the chitinous lining. ‘The cardia is 
large and- well developed, and the intestine, 
which is four-fifths as wide as the body, is com- Ae tala TA De 
posed of cells of such a size that about twelve IL, side view of head of same worm ; IIT, ventral 
- R : view of head of same worm; IV, end of tail of sume 
are required to build up the circumference. worm. 

The concave-conoid rectum is as long as the anal body-diameter. The lateral 
fields are one-seventh as wide as the body. The tail tapers most rapidly in the 
anterior half ; posteriorly it is one-fifth as wide as at the anus. The reflexed ovaries 
extend half way back to the inconspicuous vulva and each contains fifteen to twenty 
egos arranged about three abreast. The eggs are one and one-half times as long as 
the body is wide and one-half as wide as long. Segmentation appears to begin before 
the eggs are deposited,—at least in one case I observed an egg that had formed the 
first two blastomeres while yet in the uterus. 
Hab.—Blanched part of celery, abundant, Sydney, N.S.W., Australia. 
14. M. truncatus, Bastian, 2722+ © 
third as wide as the head, the blunt dorsal tooth being situated near its middle. 
The intestine is three-fourths as wide as the body and the rectum is two-thirds as 
176mm. The elongated pharynx is one- 
long as the anal body-diameter. Tail in the anterior two-thirds conoid, thence 
2, 257) a 2.92; 
9 9 
; 2mm The male tail 

cylindrical and one-fourth as wide as at the anus. = 
