PERCOIDE.E. 



17 



Dimensions. 



Total length including caudal fin 

 Distance between snout and caudal 



,, ,, anus 



Height of first dorsal . 

 Length of attachment of ditto . 

 Height of second dorsal . . 



Length of attachment of ditto . 

 Depth of anal fin . . . 



Length of its attachment . 



„ ventrals . . . 



„ pectorals 



Inches. 

 . 22 

 19 

 . 12 



2 

 . 5 



2 

 . 4 



2 

 . 2 



3 

 . 3 



Lines 

 

 

 

 6 

 

 





 

 

 

 



Inches. 

 Length of alimentary canal from pharynx io 

 anus . . . . . .20 



from pharynx to pylorus 



pylorus to orifices of coeca 

 „ valve of rectum 



of rectum 



2 







16 



2 



Lines. 





 

 9 

 

 



Lieutenant- Colonel C. Hamilton Smith made a drawing at Quebec of a Lucio- 

 perca Avhich has some of the peculiar characters of the Okow, and which he thinks 

 is either a marked variety of L. Americana, or a distinct species. " It is known 

 by the name of Poisson dore. The specimen was fourteen inches long, its anus 

 situated exactly beneath the first spinous ray of the second dorsal, and the fourteenth 

 ray of that fin opposite to the termination of the anal. The colour of the fish was 

 deep gold-yellow, with the black mottles running irregularly and obliquely down- 

 wards from the back towards the belly and tail, being quite in a contrary direction to 

 the streaks represented in the figure of L. Americana, in the Histoire des Poissons. 

 There is a black spot behind the first ray, there is another before the last of the 

 anterior dorsal, and there are five longitudinal streaks on the second dorsal, but none 

 on the caudal or ventrals. No spine was observed on the gill-plates." (Smith in lit.) 



[6.] 2. Lucio-perca? Canadensis. (Smith.) Canadian Sandre. 



Lucio-perca Canadensis, C. H. Smith. Griff. Cuvier, x., PI. 1, p. 275. 



This fish, well-known at Quebec under the name of " Green pickering," is very 

 different from any described species of Lucio-perca, so much so, that we are ready 

 to join with its discoverer in suspecting that it may prove to be the type of a pecu- 

 liar genus. In L. Americana the under margin of the bony operculum is perfectly 

 even ; but in the Green pickering it is armed with four remarkable, acute spines, 

 similar to the one that terminates its point, and nearly as large. The preoper- 

 culum appears to have no serratures that show through the soft parts. The first 

 dorsal commences with a strong spine, which is higher than the succeeding ones, 



D 



