Mr. Yarreirs Remarks on English Fishes. 465 



4. Head viewed from behind; a. right temporal muscle; h. 



great pyramidal muscle. 



5. Lower jaw, side view; a. cavity for articulation ; 6. h. coronoid 



processes. 



6. Tongue seen from above ; a. horny scoop ; h. h. extensor 



muscles. 



7. Tongue, side view; a. horny scoop; h. extensor muscles; 



c. flexor muscle. 



Art. LVIII. Remarks on some English Fishes^ with Notices 

 of three Species, new to the British Fauna, By William 

 Yarrell, Esq., F.L.S., &)C. 



The season for Whitebait fishing having expired soon after the send- 

 ing my former remarks on that subject for insertion in the XlVth Num- 

 ber of the Zoological Journal, I waited with some anxiety for the period 

 when nets of small meshes might legally be worked at the mouth of the 

 Thames for Smelts and Sprats, in the hope of obtaining further evidence 

 of the distinction between Whitebait and Shads ; and in this expectation I 

 was not disappointed. I obtained, but in small numbers only, both 

 adult Whitebait in roe, and some young ones ; but it appeared that the 

 large shoals of this fish, like all those which visit the fresh water for the 

 purpose of depositing their spawn, had, with their fry of the year, quitted 

 the river and returned to the deep. As late as the month of November I 

 obtained several small Shads, only 2^ inches in length, which illustrated 

 another point in the history of that fish. We are told by Baron Cuvier 

 and M. Valenciennes, in the second volume of their work on the Natural 

 History of Fishes (p. 25) that a Perch of 7 inches is in his third year ; and 

 I therefore felt convinced that these young Shads, only 2J inches in 

 length when taken in November, were in reality young fishes of the same 

 year, and that the young Shads of 4 inches in length, obtained in the 

 months of July and August preceding, were the young fishes of the year 

 before, the greater part of them having arrived at the length of 4 inches 



Vol. IV. II 



