420 SPH^ROMID^l. 



entire length. The outer plate of the lateral appendages 

 of the tail is considerably smaller than the inner, which 

 is broadly ovate. When alive, the animal is of a reddish 

 colour, being covered with numerous red dots, or greyish 

 buff with black specks ; the articuli of the flagellum of 

 the antennae are tipped \vith red, and the anterior seg- 

 ments of the body have a red transverse line beyond the 

 middle of each. 



It is stated by Dr. Leach that this species is very com- 

 mon on the south-west coast of England, where it was 

 first taken by Montagu. We have taken it at Firestone 

 Bay, near Plymouth. It has also been taken at Cumbrae, 

 in the Firth of Clyde, by the Rev. A. Norman ; and at 

 Bangor, in Ireland, in September, by the late Mr. W. 

 Thompson ; and probably occurs all round our coast. 



