Medusæ collGctGd bj tbG “*Tjo.llø ExpGdition. 
By 
Paul L . Kramp . 
During the summers of 1908 and 1909 the Danish brig 
“Tjalfe has carned out fisheries investigations in the Greenland 
waters, especially off the west coast of Greenland, under the 
diiection of Mr. Ad. S. Jensen. The scientific investigations were 
made partly by means of trawl and dredge, partly also by means of 
pelagic nets and young-fish trawl. By these investigations a com- 
paratively large material of medusæ was brought up. 22 species 
were collected. A great deal of the material was preserved in for- 
maline and mostly in fairly good condition. It being, however, ini- 
possible to preserve the whole of the material Mr. Ad. S. Jensen 
put down notices in his journal with a short characterisation of 
the different species. These notices, as a rule, have been sufficient 
for identifying the species, and I have, therefore, included also 
the non-preserved material in the present paper, but with an 
asterisk (*) at the number of station in question. — Most of the 
22 species were previously known from Greenland, being reeorded 
in Levinsen’s: „Meduser, Ctenoforer og Hydroider fra Grønlands 
Vestkyst", 1892. — Atolla Bairdi is mentioned by Vanhoffen 
(1906) as occurring in the deep of the Davis Strait (taken by the 
“Ingolf” Expedition). — 6 species are new for Greenland. Two of 
these, Melicertum campanula and Tiara pileata are known from 
b°th sides of the northern Atlantic area, the four are deep-sea 
medusæ, found in the Atlantic water of the deep Davis Strait 
together with Atolla Bairdi and Periphylla hyacinthina. 
Vidensk. Meddel, fra Dansk naturh. Foren. Bd. 65. i 7 
