6o 



MEDUSA. I. 



describes the 16 "diadems", each containing 30 "pearly nodules"; he further mentions the high illumi- 

 nating power of the animal. The description is, however, rather short and not very exhaustive. 



In 1903 Browne described a species, Mitrocomella fulva, from Bergen and Plymouth, but in 

 1905 he states that it is identical with polydiademata, of which species he gives, at the same time, a 

 new and more thorough description based on specimens from the Firth of Clyde (1905, p. 767). 



Chart VI. Finds of Mitrocoma polydiademata (Romanes). O Occurrence according to the literature. 



Material (see Chart VI): 



!) Off Trangisvaag, Faeroe Islands. May i4th 1904. Young-fish trawl at the surface. "Thor" 

 stat. 80 (04). i specimen, about 13 mm wide. In the collection of the Plankton Laboratory, Copenhagen. 



2) Lat. 5954' N., Long. 434' E., near the coast of Norway south of Bergen. May 8th 1905. 

 Young-fish trawl, 65 m wire. "Thor" stat. 24 (05). - - i specimen, about 22 mm wide. 



3) Lat. 56o8' N., Long. oi5' W., about 90 miles off the mouth of Firth of Forth. May 4th 

 1905. Young-fish trawl, 80 m wire. "Thor" stat. 16(05). 4 specimens, 10 14 mm wide. In the collection 

 of the Plankton Laboratory, Copenhagen. 



