232 



NORTHERN ZOOLOGY. 



finely toothed, and a cluster of minute teeth exists on the vomer, but none can be perceived 

 on the intermaxillaries or lower jaw. The gill-membrane, thick and nacry, contains eight rays, 

 of which the posterior ones are flat, and the penultimate one ends in a transparent obtuse 

 point. 



Fins.— Br. 8; P. 16; D. 19; V. 8; A. 16. 



The dorsal commences rather posterior to the middle of the fish, excluding the caudal : its 

 two anterior rays are short, and closely applied to the base of the third, the others are forked. 

 The ventrals are small and opposite to the middle of the dorsal. The anal is half an inch 

 high anteriorly, and gradually lowers to half that height : its attachment is almost twice as 

 long as the space betwixt it and the caudal. The latter fin is large, cuneiform, and deeply 

 forked. 



Colour. — The back, when moved in the light, yields various beautiful reflections of green 

 and gold ; the belly and sides are white, with pearly lustre and violet reflections, and the sides 

 of the head are deeply tinged with gold-yellow. Scales readily deciduous, large, thin, and 

 orbicular, possessing much nacry lustre *. 



Intestines (but cursorily examined). — Stomach forked, the blind side rather longer than 

 the other. A considerable number (between fourteen and twenty?) of long, slender cteca 

 surround the pylorus f . Air-bladder thickly covered with nacre. Roe slightly developed. 



Total length . 



Length of the pectorals . . 

 „ attachment of dorsal 



„ its longest rays 



Dimensions. 





Inches. 







15 



Length of attachment of anal 



1* 



l! 



its longest rays 



1* 



jj 



its last ditto . . 



H 



j> 



space between it and caudal 



Inches. 



[89.] 1. Hiodon chrysopsis. (Richardson.) The Naccaysh. 



Family, Clupeoidese. Cuvier. Genus, Hiodon. Le Sueur. 

 Hiodon clodalis. Richardson, Frank. Journ., p. 716, excl. syn. 

 Oweepeetcheesees. Crees. Gold-eye, Fur Traders. Naccaysh. Voyageurs. 



This singular and beautiful little fish inhabits the lakes which communicate with 

 the Saskatchewan, in the 53rd and 54th parallels of latitude, but does not approach 

 nearer to Hudson's Bay than Lake Winipeg. In my account of the fish obtained 

 on Sir John Franklin's first expedition, I considered this species to be the same 



* Few of the distinctive characters of the Common herring, enumerated in the Regne Animal, are comprehended in the 

 above description : — They are " La carene du ventre peu marqui'e, le subopercule coupe en rond; des veines sur le sous-orbi- 

 taire, le priopercule et le haul de topercule. Ses ventra/es naissent sous le milieu de la dorsale, la longueur de sa fete est cinq 

 fois dans sa longeur totale, et en portant en arriere le distance de son museau a sa premiere dorsale, on atteint le milieu de la 

 caudate. Son anale a seize rayons'' P. 318. 



f Artedi says the csca are sixteen or seventeen in number. 



