372 LAKE SUPERIOR. 



extensively imbricated, showing, however, the same proportions on 

 the different regions, which we have given for the preceding species. 

 The lateral line is apparently the same ; only the curve inflected on 

 the abdomen seems wider. 



The back and the head are greenish-brown ; the lower face of the 

 head and the abdomen are of a very pale golden yellow, with a very 

 brilliant silvery reflection of the scales. The operculmn is gold 

 colored. The rays of the dorsal, caudal, and pectoral fins, have a 

 gray tint on a yellowish ground. The ventrals and the anal are of 

 a golden yellow, like the abdomen. 



The head is smooth ; we notice only on the space between the eye 

 and the occiput some rudiments of tubercles hidden beneath the 

 skin, perceptible only to the touch. 



This species is distinguished from L. cornutus, not only by the 

 color of its fins and the absence of armature on the head, but also 

 by differences in the general form and structure of the fins, anal- 

 ogous to those which we have pointed out in L. frontalis. 



From Lake Huron. 



LEUCISCUS HUDSONIUS, Dekay. 



LEUCISCUS HUDSONIUS Dekay. N. Y. Fn. 1842, p. 206, PI. 84, 



fig. 109. 

 CLUPEA HUDSONIA He Witt Clinton, An. Lye. N. H. N. Y;, I., 1824, 



49, PI. 2, fig. 2. 



The resemblance of this species to the Clupea is only superficial, 

 and does not require a long examination to be refuted. With the 

 exception of the general outline, it has not one of the essential char- 

 acters of organization of that family. The external conformation of 

 the mouth could not leave us for a moment in hesitation as to which 

 natural group it belongs. It is of the family of Cyprinidae, where 

 it has been placed by the author of the Zoology of New- York. 

 Already DeWitt Clinton, though arranging it in the genus Clupea, 

 entertained some doubts in this respect, on account of the absence of 

 a ventral serrature. 



The species is tolerably well described by the authors whom we 

 have just cited, so that we have only to refer our readers to them. 



