THE SALMON FAMILY. 367 



prominent, extending beyond upper lip. Lower jaw shortest. Teeth 

 (about 6) in upper jaw, long and slender; those on tongue shorter and 

 more numerous. Scales large ; 8 between lateral line and back-fin, 

 and 8 between lateral line and base of ventral fins. Colour of back 

 and sides dusky blue ; belly dirty white j lower portion of back, breast, 

 ventral and anal fins dark bluish grey. 



Fin-rays (including two short rays at commencement of back- and 

 anal fins): D. 14: P. 16: V. 12: A. 13: C. 20*. 



THE POLL AN (OF IRELAND). 



( Coregonus pollcm.} 



In habits these fish do not differ in any marked respect 

 from the Vendace of Scotland, or from the Welsh Gwyniad. 

 They abound in some parts of Lough Neagh, and are met 

 with in Loughs Corrib, Derg, and Erne, and probably also 

 in others of the Irish lakes. The specimens from these 

 different loughs vary slightly in external appearance, but 

 will all be found to bear a close resemblance to that re- 

 presented in the engraving, which was taken from Lough 



* From Dr. Parnell's description of a Loch Lomond Powan. 



