MYSIS VULGARIS. 341 



fish, from which they frequently escape, by springing up out 

 of the water." 



Is it not probable that M. integer of Leach (Scoticus 

 of Thompson), may be identical with this species ? His 

 description is too imperfect to enable us to ascertain this, 

 but they agree in such particulars as are known, excepting 

 in size and colour, both of which are variable characters. 



The following is his account of the species.* 



" Tail with the middle lamella entire ; length one-third 

 of an inch. Colour pellucid cinereous, spotted with black 

 and reddish brown. Eyes black. Females more abun- 

 dant than males. 



" At low tide, near Loch Banza [in the Isle of ArranJ, 

 the pools were full of this species, swimming with its head 

 uppermost, and its eyes spread, making a most grotesque 

 appearance." 



* Lin. Trans. XI. p. 350. 



