L.M.B.C. MEDUSA. 411 



The umbrella of an adult specimen is about one inch 

 in diameter. Two large, colourless tentacles on the 

 margin of the umbrella, when fully expanded about 2 J 

 inches long, and also about 100 small bulbs each with 

 two minute cirri, armed with nematocysts. Eight mar- 

 ginal vesicles, each with four otoliths. The stomach is 

 on a peduncle about Ij inches long. Four radial canals. 

 At Port Erin in 1893, I captured 3 specimens of the early 

 stages. One specimen about 1 mm. in diameter. Two 

 long opposite perradial tentacles. Two perradial, four 

 interradial, and four adradial bulbs, all with a pair of 

 cirri. The two other specimens slightly larger, with a 

 few more bulbs. 



Distribution. — Queensferry, Plj^mouth. 



SCYPHOMEDUS/E. 



Order STAUEOMEDUS^. 

 Family Tesserid^. 



Depastrum cyatliiforme, (Sars 19). 



Beaumont {5) found this species at Port Erin, in 1892, 

 and at Poyllvaaish, in 1893. It is fairly abundant in both 

 localities, attached to the under surface of stones near 

 the Laminarian zone. 



Beaumont believes that CardueUa cyathiformis, Allman, 

 Bepastrum cyatliiforme, Gosse, and Lucernaria cyathi- 

 formis, Sars are one and the same species. 



Hseckel places Garduella cyathiformis in another genus, 

 as a synonym of Depastrella allnvani, Hseckel. 



Family Lucernarid^. 



Haliclystiis auricula (Eathke). 



A specimen taken by M. Chopin, in 1891, near Port 

 St. Mary. Mr. Beaumont has seen this specimen and 



