Videnskabelige meddelelser

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Videnskabelige meddelelser

192

In the neighbourhood of the vulva the body seems somewhat ex-

panded possibly on account of some pressure of the coverslip.

The cuticle is rather peculiar. In the foremost part of the body,

on the head, it is quite smooth and rather thick, but for the rest

the annulation is very prominent and coarse. Under high power is

seen a system of circular points or dots arranged in transverse

rows (PI. XI, fig. 5). In the foremost part of the specimen the dots

are circular but more caudad they grow oblong having their longi-

tudinal axis parallel with the longitudinal axis of the body; at the

same time they appear to increase in number being more densely

situated. The dots all seem to be almost of the same size ; long-

itudinal rows with larger dots are not found in this species, a

feature common in related forms. The tip of the tail is, like the

front end, devoid of dots and annulation. The shape of the tail is

seen fig. 3, PI. X.

The head is provided with papillæ and more caudad is found

a ring consisting of 10 bristles. Lateral organs seem to be lacking

The buccal cavity is of the usual shape in this genus, the tooth

medium-sized.

Oesophagus is rather thin in the greatest part of its length;

posteriorly it forms a large oval bulb (PI. XI, fig. 2).

Female organs symmetricai; the end of the ovaries is reflexed.

Vulva is found in the middle of the body. No vaginal glands are seen.

Length : 2,o mm. ,

u 3= 42. li = 6,5. ;' = 15,5. I

Limfjord ; shallow water.

Chromadora problematica n. sp.

VI. X. figs. 5, 8: PI. Xi. fig. 9.

Only a single specimen, a female measuring I.2 mm was taken.

The body tapers inconsiderably in the front end; head truncate, in

shape reminding one of the genus Haliclioanolaimus. The cuticle is

provided with a delicate transverse striation and with transverse

rows of very fine points.

The head is set with a circlet of indistinct papillæ and behind

this is found a ring of short, stout bristles. The buccal cavity is

broad and cup-shaped in front, its hindmost part is funnel-shaped

with its base continuing into the lumen of the æsophagus. Dorsal

tooth very indistinct or possibly lacking.

I

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