208 



CLUPEID.E. 



ABDOMINAL 

 MALACOPTERYG1I. 



CLVPE1DJE. 



THE TWAITE SHAD. 



Alosafinta, CUVIER, Regne An. t. ii. p. 320. 



,, ,, WlLLUGHBY, pi. P. 3, fig. 1. 



,, ,, IM Feinte, DUHAMEL, sect. iii. pi. 1, fig. 5. 

 Clupea alosa, LINNAEUS. BLOCH, pt. i. pi. 30. 



,, ,, Shad, PENN. Brit. Zool. vol. iii. p. 460, pi. 80. 



,, ,, ,, DON. Brit. Fish. pi. 57. 



,, ,, FLEM. Brit. An. p. 183, sp. 53. 



,, ,, ,, JENYNS, Brit. Vert. p. 437. 



ALOSA. Generic Characters. Upper jaw with a deep notch in the centre ; 

 in other respects like Clupea. 



BARON CUVIEK, in the last edition of the Regne. Animal, 

 has advanced the Shads, of which we have two species, to the 

 rank of a genus, on account of the deep central notch in the 

 upper lip ; and I have followed this example for the addi- 

 tional reason that it will the more easily and effectually 

 afford the means of obtaining a desirable alteration in our 

 nomenclature. 



According to Cuvier, most modern authors have misap- 

 plied the systematic trivial names of these two species, call- 

 ing the Shad with teeth, and several spots along each side, 



