150 CISCO. 



the second is adipose ; the pectoral has fourteen soft 

 rays, the ventral eleven, the anal twelve, and the caudal, 

 as well as I could count them, fourteen. It is a very 

 beautiful and delicate fish, more so even than the white- 

 fish. 



The cisco is taken at Cape Yincent, with the eel-fly 

 baited on a small hook and dibbled along the top of the 

 water, and is said not to notice any artificial fly. I unfor- 

 tunately had no chance to try, though I saw them rising 

 and taking the natural fly readily. They do not rise with 

 the rush of a salmon or trout, never springing out of water, 

 and simply show their heads as they seize their prey. 

 The eel-fly is a fat and sluggish fly, and it may be that 

 the fish rising slowly, as they naturally do, would disco- 

 ver the deception even if an imitation eel-fly were offered 

 to them. This fly, as I have elsewhere observed, is simi- 

 lar, both in appearance and habits, to the famous Euro- 

 pean May-fly. 



The fish known as the lake herring, sal/mo clwpeifor- 

 rruis, although very similar in appearance, has certain dis- 

 tinctive characteristics ; for instance, there are minute 

 teeth on the tongue, and the fin-rays, as I make them, 

 are — 



D. 12 ; P. 16 ; Y. 11 ; A. 11 ; C. 19f ; B. 9. 



According to Lesueur — 



D. 12 ; P. 16 ; Y. 12 ; A. 14 ; 0. 19f . 



In the lake herring I also found the first ray of the 

 dorsal the longest, although Lesueur says it is simple 

 and short ; the tail is deeply forked. The dorsal termi- 

 nates nearly opposite the ventrals, and the second dorsal 

 is opposite the centre of the anal. 



