

GREA T BRITAIN. 307 



Yorkshire (Yorkshire Vertebrata) ; not uncommon along 

 with the herrings (Paget). Yarrell obtained an example in 

 1831, captured above Putney Bridge ; and Jesse recorded 

 another, full of spawn, taken at the end of June, opposite 

 Hampton Court Palace. It is also taken along the south 

 coast, and has been recorded from Mount's Bay and 

 St. Ives in Cornwall. It used to abound in the lower 

 portions of the Severn and the Wye, but is not so abundant 

 as it used to be. 



In Ireland it is found on the north-east coast, and by no 

 means uncommon on the west coast ; it is often abundant 



Limerick Harbour, and Brandon Creek on the coast of 

 ^erry. In the Ordnance Survey it is said not to be 



icommon off Derry. 



This is by far the larger of the two British species of 



lad. Buckland mentions one of 5^ Ib. weight he received 



>m the Tay ; and Couch remarks that it attains to 4 feet 



length. 



5. T wait-shad (Clupea finta). 



Names. The twaite-shad, maid. 



B. viii., D. 18-20, V. 9, A. 20-25, L. 1. 60-75, Vert. 55-56. 



Length of head 5 ; height of body 5-|- in the total 

 ength. Eyes. With adipose lids ; diameter 4^ to 54- in 

 the length of the head, and 2 diameters apart. Opercle 

 with some raised and radiating striae descending towards 

 the subopercle. Upper jaw, with a median notch to 

 receive the end of the somewhat prominent under jaw ; the 

 maxilla reaches to beneath the hind edge of the eye. 

 Teeth. Small and deciduous in the jaws, absent from the 

 palate and the tongue ; gill-rakers thick, osseous, and from 

 20 to 30 along the horizontal branch of the outer branchial 

 arch. Fins. Dorsal commences nearer to the end of the 



X 2 



