34 Nils Hj. Odhner. 
inferior zone of salivary glands (gl.) which lie partly outside 
the pharyngeal musculature and partly in the epithelium. The 
musculature is well developed, consisting of a circular layer and 
of radiating fibres outside it attaching the pharynx to the sides 
of the body. 
No radula exists. A small rising of the bottom wall of the 
pharynx may be a rudiment of a radular support, but the cells 
lining it are of the same shape as elsewhere and show no cuti- 
cular covering. 
Posteriorly, the pharynx grows a little narrower, and its rear 
end opens directly into the intestine without forming any distinct 
oesophagus. 
In the frontal and lateral fundus of the ciliated crypt there 
opens a hyaline gland (a. p.) which extends upward on both 
sides of the head between the cirrose area and the brain but not 
farther back. Its cells had a bladder-like shape and had the appear- 
ance of being emptied, only their walls being more vividly stained. 
The whole gland seemed to be rather feebly developed in com- 
parison with the anterior pedal gland of Simrothiella. Near the 
median line on both sides of the ciliated crypt appears the frontal 
end of the posterior pedal gland. The latter expands only slightly 
on the sides of the pharynx but otherwise seems to be rather 
well developed and to continue throughout the whole body as 
far as the posterior end of the ventral fold. | 
We must await further material before the rest of the structure 
of this animal can be determined. From the facts stated here it 
is, however, evident that the present form represents the type of 
a new genus, and it is a pleasure for me to name it in honour 
of professor WIREN, the masterly investigator of this group of 
animals. 
Fam. Proneomeniidae. 
On the Norwegian coasts occur the following forms belonging 
to this family: Solenopus sarsi and borealis of KOREN & DANIELSSEN, 
the former of which is to be referred to the genus Dorymenia HEATH, 
the latter to the genus Anamenia NIERSTRASZ. In this connection 
I also mention some specimens of Proneomenia sluiteri, though 
this species is restricted to the Arctic region north of Norway; 
these specimens have not previously been published, and the 
material has been collected by a Norwegian expedition and belongs 
