294 Macieay Memoria Vouume. 
Hfab.—¥ ound among the bases of carrot leaves, Sydney, New South Wales, 
Australia, in July. 
223 
7. D.domus Glauci, n.sp. 2p 3 — 18mm. Neck conoid,— convex-conoid 
anteriorly ; lips six, each with at least one distinct papilla; spear acute, well 
developed; cesophagus at first only one-fifth as wide as the corresponding part 
of the neck, but gradually and uniformly widening until it is at last more than half 
as wide as the base of the neck; rectum nearly twice as long as the anal body- 

diameter ; pre-rectum three times the length of the rectum, tapering posteriorly ; 
ovaries reaching two-thirds to three-fourths the way back to the vulva ; eggs thick- 
shelled, ellipsoidal, as long as the body is wide and over half as wide as long, 
Ffab.—Found among moss on the walls of the Casa Poetz, Pompeii, Italy. 
Possibly the widths given in the formula are too great. 
40 e 
. sO) 10:50 208 SA7e 98°3 o 
8. D. Vesuvianus, n.sp. 77-33-36 a5733 15mm. In the posterior part the neck 

is nearly cylindrical, but the anterior third is convex-conoid to the truncate head. 
The lip-region is not conspicuous, and the lips are either absent or very indistinct. 
There are perhaps two rows of papillee, six in each row. The spear is very slender 
and can be traced backward only for a distance equalling one-fiftieth of the length of 
the worm. The anterior part of the cesophagus is only about one-fourth as wide as 
the corresponding part of the neck, but it expands suddenly behind the middle, so 
that the posterior third (male) or two-fifths (female) is twice as wide, z.e., about half 
as wide as the base of the neck. The intestine is about half as wide as the body and - 
is marked off from the cesophagus by a distinct constriction. The cardia is broad 
but not deep. The rectum is only three-fourths as long as the anal body-diameter ; 
the pre-rectal portion of the intestine, however, is quite as long as the enlarged portion 
of the cesophagus. The lateral fields are nearly one-third as wide as the body. The 
tail in either sex is hemispherical or conoid-hemispherical. The inconspicuous vulva 
leads to a vagina half as long as the body is wide. The reflexed ovaries reach half- 
way back to the vulva. §73-3—5—s3 im. A ventral row of eleven juxtaposed 
median innervated papillee extends forward from opposite the proximal ends of the 
spicula, These latter are of the usual form and about twice as long as the tail. The 
internal male sexual organs occupy the posterior two-thirds of the body. 
H1ab.—Found among moss on the sides of Mount Vesuvius, Italy. 
9, D. labyrinthostoma, n.sp. ~~ 93-32-12 17mm. This species belongs to the 
group first made known through the researches of Dr. de Man, and characterised by 
the possession of elaborate mouth parts accessory to the spear. The group represents 
the acme of development in Dorylaimus so far as yet discovered. The spear presents 
