1903] Keport on some Medusae from Norway and Spitzbergen. ]: 5 



the slightest trace visible of an ocellus. In all the species of Mar- 

 gelis, which I seen, the pigment of the ocellus is permanent in Al- 

 cohol or Formalin. As Måtee (1900) has described a species 

 (Bougainvillia frondosa) from the Tortugas, Florida, U. S. A. 

 without ocelli, there is reasonable ground for assuming that ocelli 

 are not a constant character of the genus. 



It is a pleasure to me to associate this new species with the 

 name of Dr. 0. Xoedgaaed. 



Margellium octopunctatum (Sårs). 



Cytaeis octopimctata, M. Sårs 1835. p. 28, pl. VI, fig. 14. 

 Lizzia octopunctata, Forbes, 1848, p. 64, pl. XII, fig. 3. 

 Margellium octopunctatum. Haeckel, 1879, p. 95. Browne, 1896, p. 479. 

 1895, p. 270. 



Herløfjord. 0— 100 m. 29. 3. 1901. Two specimens. 



a) Umbrella 2 mm. in length and width. Mouth with four lips, 

 each with two terminal and two lateral dusters of nematocysts. 

 Medusa-buds upon the stomach. Three tentacles in each of the 

 four perradial groups and four solitary interradial tentacles. 



b) Umbrella 1 mm. in length. Mouth with four lips, each Avith two 

 terminal dusters of nematocysts. Medusa-buds upon the sto- 

 mach. Three tentacles in each of the four perradial groups and 

 four solitary interradial tentacles. 



Hjeltefjord. Surface. 25. 4. 1901. One specimen. 

 Umbrella 3 mm. in length and 2 1 / 2 mm. in width. Mouth with 

 four lips, each with two terminal and two lateral dusters of nema- 

 locysts. Medusa-buds upon the stomach; one bud fully developed 

 and the medusa ready for liberation. Three tentacles in each of 

 the perradial groups and four solitary interradial tentacles. The 

 basal bulbs of the tentacles are of a very dark brown colour. One 

 group of perradial tentacles is missing. This is probably the result 

 of an injury. The interesting point about these specimens is the 

 presence of single, or solitary interradial tentacles, instead of the 

 usual group of two or three tentacles found in British specimens. 

 Såes who first described this species from specimens tåken on the 

 Norwegian coast states that the medusa on leaving its parent has 

 three tentacles in the perradial groups and four single interradial 

 tentacles, and that the adult has three tentacles in both perradial 

 and interradial groups. 



