MEDUSA. I. 



99 



a Tivia, but there are too nian>- tentacles for a Tiiiia, and the size and shape remind one very much of 

 Eiitoiiiua. Bedot in his Histoire des H^droTdes includes ''Geryonopsis Forbes/ P' among the synonyms 

 of Irene vtriditla Per. & Les. Peach (1868, p. 97) mentions a medusa, ''Tima ForbesiP, which is said to 

 be distinguished from Tiiiia bairdii by the possesion of numerous tentacles; probabh- also this medusa 

 belongs to Eiitonina itidicnns. The same may be the case with a medusa mentioned by Crawford 

 (1891, p. 296): "A form evidently allied to Tima, but with shorter peduncle, with more numerous tent- 

 acles, and with the reproductive organs onlv on a portion of the canals . . .". 



Chart XIII Occurrence of Euttmina iinticaiis in the Atlantic. O Occurrence according to the literature. 

 In the hatched region the species has a common occurrence. 



Material (see Chart XIII): 



i) — Isafjord, north-western part of Iceland. Mariboe 1865. — i specimen, 22 mm wide. Iden- 

 tified b\' Haeckel as 'Fi'rene [vtriditla Esc/i.F)^\ 



2) — Patreksfjord, north-western part of Iceland. June 22nd— 23rd 1904. Fished from the ship. 

 "Thor" stat. 159(04). — 2 specimens, 12, 14, and 17 mm wide. 



3) — Borgundfjord, near Aalesnnd, Norway. June 25th 1902. "Michael Sars", Ad. S.Jensen. — 



19 specimens, about 16 — 27 mm wide. 



13* 



