Dorylaimus do r y u ris n. sp. 
PI. III. figs. 28, IV. fig. 29, 31. 
On account of the peculiar form of the tail I have named 
this species D. doryuris. It has some resemblance with D. Carterv, 
theie is also a resemblance with the form centrocercus , but in 
the foim of the tail it is different from both of these and does not 
resemble any of the species of this genus which I know. It seems 
to be not uncommon in this country as it has been taken in rather 
dilferent localities: in Lynæs on roots of plants near the harbour; 
in Kildeskoven among putrefying leaves and finally at the Furesø 
in the edge of the water on roots of plants. The male was 
not seen. 
The body is siender, tapering rather quickly towards the front 
end; this is inconspicuously head-shaped, provided with little pro¬ 
minent lips each of which carries two inconsiderable papillæ. The 
spear is of the usual form and rather strong; two ring-shaped 
thickenings of the chitin-intima are seen. The oesophagus being 
slendei in the distal half increases evenly and is in its proximal 
end piovided with a thickening resembling an inconspicuous bulbus. 
On the limit between oesophagus and intestine is found a strongly 
marked constriction. The cells of the intestine contain dark 
refiactive gianules, arranged in groups. The tail is domical and 
piovided with a rather quickly narrowing pointed spine incon¬ 
spicuously bent towards the vent (fig. 29). Vulva is placed nearly 
in the middle of the body, often a little before, at times a little 
behind. The female organ is bifid; the antevaginal ovary is to 
its bending longer than the postvaginal. Four eggs are seen in 
the uteius. The animal appears to produce eggs all the year 
round. 
I give the measurements for three femates; the numbers 1 
and 2 originate from Lynæs, the number 3 was taken in the 
Kildeskov. 
