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Notes on the Young of B/ennius ga/en'ta, L. 



(Montagu's Blenny). 



By 

 L. W. Byrne. 



No description of the young of this species seems to exist, with tlie 

 exception of that given by Emery (1) of some examples from Naples. 



The specimens here described were captured at Newquay, on the 

 north coast of Cornwall, in September, 1898, and have been preserved 

 in formol. They were caught in sandy pools surrounding or surrounded 

 by rocks in the shelter of which they seemed to be fond of lying. When 

 disturbed they darted with considerable rapidity from place to place, 

 and in doing so were seemingly assisted by the large pectoral fins which 

 were carried nearly at right angles to the body by the fish when at 

 rest. 



They exhibit the large pectoral fins typical of the young of many 

 British species of Blennius, but in other respects generally resemble 

 the adult in form. Although these specimens exhibit a remarkable 

 amount of individual variation and show a considerable lack of uni- 

 formity in growth and development, the presence of the interorbital 

 " helmet," taken in conjunction with their comparatively small size 

 and radial formula, seems to be diagnostic from a length of 15'5 mm. 

 (including caudal fin) upwards. 



