356 
by the “Dana“ to Wollebæk’s species of this genus, not least con- 
sidering the Southern locality from which it originates. But besides 
it differs from the named species in having a considerably greater 
number of hair bristle-bearing parapodes, than P. norvegicus ought to 
have, namelely 27. Wo 11 ebæk indicates 16 for his species; Hesle 
14 to 20 for the same species, and this latter author calls attention 
to the great variation of the number of hair-bearing parapodes in 
the different species of the genus under consideration, and he points 
out that the same holds good for the species of the genus The- 
lepus too. Therefore, regarding the only specimen of Polycirrus at 
my disposal, the condition of which is not very good, and which I 
am not able to refer to any other species of this genus, I have 
no other choice than to refer it to P. norvegicus and to point out 
the differences between the specimen from the “Dana“ and the 
descriptions of Wollebæk and Hesle. Besides the above named dif¬ 
ference concerning the number of bristlebearing Notopodials I shall 
point out that nephridial papillæ are seen on the first bristle-bear¬ 
ing segment to the seventh ind. Further the tips of the hair- 
bristles are not beset with coarse hairs as State both of the named 
authors; it is very difficult to see if hairs are present or not, even 
with immersion lens. If this be so the hairs must at any rate be very 
liny. The length of the “Dana“-specimen is ca. 104 mm, while 
Hesle indicates the greatest length observed by him as 36 mm. 
P. norvegicus is hitherto only known from Norway and from 
the western coast of Sweden. 
Amæa tvilobata (Sars). 
East of Frederikshavn. 6 miles. 30 m. 
The species is hitherto only known from Norway and Sweden. 
The specimen at my disposal is the only one hitherto recorded 
from Danish waters. 
Lysilla Lovéni Mgrn. 
N.W. of “Trindelen“. 8 miles. 39 m. 
“Læsø Rende“. 38 — 41 m. 
N. of Frederikshavn. 36 m. 
Off “ Knudshoved “ 18.V. 1913. Blegvad. 
Presumably Lysilla Lovéni is not quite as scarce in the Katte- 
