272 Macteay Memoriat Vouume. 
the body. The conoid rectum is one and one-half times as long as the anal body- 
diameter. The reflexed ovaries extend back nearly to the inconspicuous vulva. 
The position of the ventral gland remains unknown, but the ventral pore, its outlet, 
is situated just behind the nerve-ring. Two lateral glandular organs occur opposite 
the rectum, each emptying through a lateral pore near the middle of the thicker conoid 
anterior part of the tail. Inside the cesophagus, too, a gland appears to exist and to 
empty its secretion into the pharynx in the neighbourhood of the dorsal tooth. A 
dorsal organ occurs on the head, at least of the male; this I have figured. Its 
function is a mystery to me; I can only suggest that it is a special male organ of 
some sort, my reasons being briefly these -—1. I observed it only on the males ; 
nevertheless as I have seen but few females it may have been present on their heads 
and have escaped me. 2. Oerley has described a “lateral organ” as existing only on 
the male of his macrodon. Is this not perhaps the same organ that I have observed ? 
I think it more than probable. These reasons are not a sufficient basis for a pronounced 
opinion, but they will serve to call particular attention to this organ in future. The 
a 33 
v ‘8 9° 13:6 <M 57° Oy . . . 
male formula is as follows. {s353s3s——5 127mm. The tail is similar in form to that 

of the female. Beside the full complement of nine pairs of finger-shaped papille there 
is a pair of low ventral papille just in front of the anus. The nine pairs are arranged 
as follows: 1, two closely approximated submedian pairs opposite the middle of the 
distal half of the spicula; 2, a sublateral pair a little farther forward than the low 
ventral pre-anal pair mentioned above ; 3, a submedian pair just in front of the pores 
forming the outlet of the lateral caudal glands, or in other words just behind the 
middle of the conoid part of the tail; 4, three closely approximated subventral pairs 
just in front of where the tail diminishes rather suddenly and becomes setaceous, or 
in other words near the end of the conoid part of the tail; 5, a subdorsal pair some- 
what behind the three pairs just described. The linear spicula taper gradually, but 
not uniformly, to a slender point; the proximal parts are narrowed also. The accessory 
pieces are half as long as the spicula and are arranged parallel to them. Only a small 
portion of the testicle near the blind end is reflexed. The testicle has about the same 
length as the neck of the worm and occupies a position half way between the cardiae 
region and the anus. The vas deferens is of somewhat smaller diameter than the 
testicle and is connected with it by a narrow passage. The ejaculatory duct is 
apparently quite short. 
Hab.—Grass, Sydney, New South Wales, Australia. 
11. D. striatus, Biitschli. /;%°°"4 15mm. The cuticle is traversed longitudi- 
nally by about forty striz ; head rounded-truneate near the mouth, with apparently 
four setz ; lips scarcely to be detected; pharynx two-thirds as deep as the head is 
wide, longitudinally striated anteriorly, containing two very small submedian teeth at 
