MYSIS. 145 



Torquay (Mrs. Griffiths) ; Weymouth (W. Thompson, 

 who observed it in spawn June 14, 1853). 



Mysis Oberon, Couch.* — Beak bluntly triangular, 

 reaching as far as the circumference of the cornea ; middle 

 plate of tail lanceolate, tip rounded, and the rounded por- 

 tion with two diverging teeth. 



Mount's Bay (Couch). 



"A perfectly translucent species, the large black eyes being 

 the chief points by which it can be detected. It is very 

 graceful in its movements, and unless when much disturbed 

 it hovers very quietly and elegantly about and among the 

 bunches of pendent seaweed; but when disturbed it in- 

 stantly seeks shelter, either at the bottom or in some 

 crevice."" 



Mysis, n. s. (Plate IX. fig. 4.) — Antennal scale much 

 longer than eye-stalk. When alive so transparent that in 

 a tumbler of water nothing scarcely can be seen but its 

 black eyes. None of the other species are so. It is much 

 smaller than any of them. 



Falmouth (rock-pools at), Eev. A. Norman, April 1855. 



* Zoologist, Oct. 1856, p. 5284, and figure. 



