44 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY—II. 
two, three, four, or five species, or how those species may be dis- 
tinguished from each other, or, finally, what names any of them should 
bear. Having lately been enabled to examine a large number of speci- 
mens in afresh state, through the kindness of John C. Klippart, the 
efficient fish commissioner of the State of Ohio, I have come to certain 
provisional conclusions, which I have thought it advisable to insert here. 
Among the species of Stizostethium, there are two well-marked groups, 
known to our lake fishermen respectively as the “ Saugers” and the 
Pikes”. These differ somewhat in external peculiarities of form and 
coloration, and strongly in the arrangement of the pyloric ceca. 
In the “ Pike” group, there are three pyloric cca, long and large, 
subequal, and all longer than the stomach. In the ‘“Saugers”. the 
pyloric cceca are much shorter and smaller. There are four larger than 
the rest, not quite equal, and all shorter than the stomach. Besides the 
four larger ones, there are one, two, or three small ones. The total 
number is usually six, but sometimes the small ones are obsolete. 
In the extreme generic subdivision which at present obtains, any such 
decided anatomical peculiarity may be held to indicate generic dis- 
tinction. I therefore propose to consider the “Saugers” as at least 
subgenerically distinct from the “ Pikes”. 
The name Stizostedion was proposed by Rafinesque for his Perea sal- ; 
monea, the ‘* White Salmon of the Ohio”. Rafinesque’s description is 
not altogether satisfactory; but, as a certain fish of this genus is still 
known as the “‘ White Salmon,” at the Falls of the Ohio, it is possible 
to make an undoubted identification. The Perca salmonea is a “ Pike”, 
and therefore the name Stizostedion (or rather Stizostethium, for the name , 
is stated to mean “ pungent throat’) should be retained for the Pikes. 
Since the preceding paragraphs were in type, Prof. Gill and the 
writer have been enabled to compare the American species of Stizo- 
stethium with the two inhabiting the waters of Europe, viz, Stizoste- 
thiwm lucioperca (L.) G. & J. (Lucioperca sandra C. & V.) and Stizostethium 
volgense (Pallas) G. & J. The genus divides at once into four strongly * 
marked sections or subgenera, of which two—that typified by S. cana- 
dense and that by S. volgense—bear little resemblance to each other, 
and could be readily considered as generically distinct were not the 
other two sections intermediate. (1) The section typified by S. volgense 
in several respects approaches the genus Perca: it may be termed 
Mimoperca(G.&J.). (2) The Sauger group, from the development of the 
canine teeth, may be appropriately designated as Cynoperca (G. & J.). 
