8o 



MEDUSAE. I. 



crowded on the bell margin, and not seldom two successive tentacular bulbs are more or less coalesced. 

 In the countings of tentacles, mentioned below, two such tentacles with coalesced bulbs are always 

 counted as two tentacles. The number of tentacles in different specimens of equal size is very variable 

 (see below). The greatest number, which I have observed, is 328, found in a specimen, 15 mm wide, 

 from Dyrefjord, Iceland (Loc. No. 18 c). 



woo \- - 

 1000 -\- 



3000 \- 



Chart X. Occurrence of Tiaropsis mullicirrata M. Sars in the northern Atlantic and adjacent waters. 



O Occurrence according to the literature. 



Material (see Chart X): 

 West Greenland: 



1) -- Greenland, Holbell (1841). - i specimen. Type specimen of Thaumantias eschscholtzii 

 Haeckel. 



2) -- Greenland (1865). --2 specimens, labelled Tliaumantias eschscholtzii. 



3) -- Egedesrninde, Bergendal (1890). i specimen. 



4) - Lat. 66n' N., Long. 5427' W., off Sondre Stromfjord. August 28th 1908. Ringtrawl, 80 m 

 wire. "Tjalfe" staL 221. i specimen, 15 mm wide. 



