18 Edward T. Browne. [No. 4 



Off the Eddystone light house in the English Channel. 28th 

 May 1898. 



Description: Umbrella watch-glass-shaped, about 6 mm. in 

 diameter. 



Gonads oval, on the outer third portion of the radial canals. 



Tentacles 16 in number, with yellowish brown basal bulbs, and 

 many bulbs of a brownish colour without tentacles. Cirri very nu- 

 merous. 



Sense organs, 16, large: each with 3 — 8 otoliths. 



The British specimen is evidently an intermediate stage. It 

 has fewer tentacles and the gonads are smaller than in the Nor- 

 wegian one. 



The home of this medusa, where the hydroid lives, has yet to 

 be discovered. I do not believe that it betongs to the British fauna 

 and one specimen is scarcely sufiicient evidence that the hydroid 

 lives on the Norwegian coasi 



The genus Mitrocomella has only one other species, — il/, poly- 

 diademata (Romanes), which up to the present has only been 

 recorded for Great Britain. This is a large medusa of a purplish 

 colour; the gonads occupy nearly the whole length of the radial 

 canals, and the sense organs contain about 20 — 30 otoliths. 



JPhialidium temporarium^ Bbowke (? sp.) 



Phialidium temporarium, Browne, 1898. p. 491, pl. XVII. 



Byfjorden. — 150 m. 21. 11. 1898. Three specimens. 

 a) Umbrella 8 mm. in diameter. About 20 tentacles. 2 — 3 sense 



organs between every two tentacles. Gonads small and near 



the margin. The other two specimens in very bad condition. 

 Osterfjord. 0—300 m. 24. 9. 1902. 



Umbrella 8 mm. in diameter. About 16 tentacles. 1 — 2 sense 

 organs between every two tentacles. Gonads immature, linear in 

 shape, and near the margin of the umbrella. 



I am not absolutely certain about the identification of these 

 medusae, as none of the specimens were in perfect condition. 



Phialidium temporarium is one of the commonest medusae on 

 the British coasts, often occurring in shoals. It is probably libe- 

 rated from the hydroid Clytia Johnstoni, but the connection is not 

 yet definitely proved. This medusa has often been recorded under 

 the name of Thaumantias hemispherica and under many other names. 



