20 



THE EUTTERFLY AND THE BUTTER FISH. 



residence nnder a rock or stone, whence it rarely 

 wanders far. Like others of the genus, it varies much 

 in colour according to the ground it occupies. 



BUTTERFLY FISH. 



^' The other species are Montagu's Blenny ; the Ocel- 

 lated Blenny ; the Butterfly Fish, so called from the 

 singular appearance of its spotted dorsal fin ; the 

 Gattoruginous Blenny, not uncommon in Cornwall, 

 where it is taken in crab-pots, and called by the Cornish 

 urchins Tompot ; and the Crested Blenny, which has on 

 the head a small crest, which the fish can erect and 

 depress at pleasure. 



BUTTER GUNNEL {Bleniilus gunellus). 



The Spotted Gunnel (German : Der Butterfiscli), also 

 called the Butter-fish— from the slimy secretion which 

 covers its sides — is a common small fish on our coast, 

 of similar habits to those akeady described. 



