VERTEBRATA 



257 



What has sometimes been taken for another species, of 

 smaller size, of a blue black colour, with instead of spots 

 a yellow line across the head, is, I believe, the young of the 

 one just described. Specimens preserved in spirit change 

 to pink, the line 

 disappears, and 

 faint indications 

 of the pair of spots 

 appear. 



On the Scottish 

 coast this little fish 

 is common, and 

 is known as the 

 " Cock Paidle." 



A specimen 

 showing the sucker 

 is represented in 

 Fig. HO. It is 

 clinging to the glass 

 of a small aquarium 

 tank. 



Montague's 

 sucker (Lepado- 

 gaster Montaguii)is 

 found in the same 

 situations. In this 

 species the head is 

 rounded and the 

 snout blunt. It is 



Fig. 110. Lepadogaater cornubieusis, attached 

 by its sucker to front glass of aquarium 

 tank. Natural size 



of rather smaller 

 size than the last, 

 speckled with red. 



Its colour is a yellowish pink, finely 

 It is less common than the preceding. 



Numbers of these little sucking fishes are sometimes 



found clinging to floating weed at some distance from land. 



The pools that occur in the Zostera beds, large, flat- 



