62 
convoluted in preserved condition, only slightly curved. The length 
makes 2,8 mm. It is of about equal width throughout its whole 
length; only in the extremitis it is slightly tapering. The cuticle 
appears to be smooth and no markings neither transverse nor long¬ 
itudinal are seen. The head is provided with a crown of rather 
short setæ, presumably eight in number. No lateral organ has been 
observed. 
The buccal cavity is rather long in proposition to its width; 
■ its length makes c. 30 ji while its width is only 14 ja. Of the 
teeth the left subventral one is the largest. The oesophagus is of 
medium length and of about equal width throughout its whole 
length; only towards its base it increases somewhat. The nerve 
ring is situated inconsiderably cephalad to the middle of the oeso¬ 
phagus. The intestinal cells are crowded with refringing granules. 
The ventral giand is situated somewhat behind the base of the 
oesophagus, and the excretory pore about 50 ji behind the front. 
Immediately behind the excretory pore a rather stout bristle is 
seen. 
The spicules are almost straight and provided with a little knob 
in the proximal end; behind the knob is a necklike constriction 
whence the spicule increases in width. Towards the distal end it 
tapers rather strongly. No accessory pieces have been observed. 
The length of the spicules makes c. 36 ji. Round the ano-genital 
aperture is found a cup-shaped invagination, the edge of which is 
set with short, coarse bristles with acute tip. The tail is rather 
thin, almost finger-shaped. On its ventral side is found two blunt 
projections in each of which is seen a slightly curved spine with 
very acute tip. These spines having their proximal ends in the 
interior of the tail penetrate the cuticle and their distal ends pro- 
ject on the ventral side of the tail. I have not been able to decide 
whether these spines are hollow and efferent duets for giands or 
whether they are solid. 
a — 58,3. ft — 7,14. y — 35, o. 
