10 NORTHERN ZOOLOGY. 



The lupus, winch the L. Uneatus closely resembles in structure, contains seventy 

 scales in a row, between the gill-opening and caudal-fin. The most remarkable 

 character of L. notatus appears to be the solitary spine in the anal, all the other 

 species having three. As to the six soft rays of the ventrals, the same number is 

 represented in Mitchill's plate of Uneatus, while Cuvier reckons only five, in con- 

 formity with the division of Percoidese to which the genus belongs ; but it often 

 happens that the last ray is divided to the base, thus causing six to appear in the 

 recent fish, though in the dried specimen, or skeleton, the exact number is easily 

 ascertained by counting the joints. L. Uneatus has eight or nine longitudinal 

 streaks on a side, one of them corresponding to the lateral line. In the more robust 

 form, and in the strong scales of the head, the Canadian Bar-fish resembles the 

 L. mucronatus of the United States and the West Indies, and the L. multilineatus 

 of the Wabash. The latter species has sixteen narrow, black, longitudinal lines 

 on the flanks. Nothing is said of the habits of the latter ; but if it ascends the 

 Wabash in the winter time, it must have quitted the warm climate of the Gulf of 

 Mexico, and its movements might in that case be ascribed, by some, to its love of 

 cold or temperate waters. L. notatus is the most northern known American 

 species, and if it frequents no higher latitudes than the Gulf of St. Lawrence, or 

 the 50th parallel, its range northward is about equal to that of the L. lupus, which 

 has been noticed on the southern shores only of Britain, though but rarely. 



[5o] I. Lucio-perca Americana. (Cuvier.) The American Sandre. 



Family, Percoideae. Genus, Lucio-perca, Cuvier. 



Le Sandre d'Amerique (Lucio-perca Americana). Cuv. et Val., ii., p. 122, pi. xvi. 



Picarel. Settlers on Lake Huron. 



The genus Lucio-perca also belongs to that division of Thoracic Percoideae 

 having seven branchiostegous rays and two dorsals, but it stands in a subdivision 

 which is characterized by the presence of long canine teeth, in addition to the 

 ordinary ones " en velours." The species of this genus, like those of Perca* as 

 restricted by Cuvier, are probably all inhabitants of fresh-water exclusively, for 

 though a L. marina of the Black Sea is noticed in the Histoire des Poissons, it is 

 included in this genus with doubt, being known to Cuvier only by the description 



* Perca-lrut/a of the Hist, des Poiss., which was caught in Cook's Straits, New Zealand, is afterwards described as 

 a Centropristis, and will, Cuvier thinks, prove to be the type of a peculiar genus. It is not said whether P. Plumeri and 

 P. marginata were taken in the sea or not ; all the rest are fresh-water species. 





