616 



REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



a larger fish and differently colored. It differs from L. elongatus, a species which 

 might occur in the State, in having a smaller mouth, the lower jaw never pro- 

 jecting, head less pointed, a shorter maxillary, finer scales, and the ahsence of the 

 black lateral band. The accompanying tabulated measurements will give some idea 

 of the variation in the species. The species is named for Prof. Henry F. Nachtrieb, 

 State zoologist of Minnesota. 



Length, 

 inches. 



Head. 



4* 



Depth. 



Dorsal 

 tin. 



Anal 

 fin. 



Scale. 



12-75- 9 

 12-72- 9 



12-73- 

 12-72- 



8 13-74- 



11-74- 



12-76-10 

 12-72- 9 

 12-79- 9 

 12-74- 9 

 12-72- 9 

 12-71- 9 

 12-71- 9 

 12-72- 9 



12-71- 9 



12-71- 8 



12-74- 9 

 12-71- 8 

 12-72- 8 



Lateral line. 



Right. 



Complete 



...do 



...do 



Complete, except 3 



or 4 scales. 



Complete 



Complete, except 3 



or 4 scales. 



Complete 



do 



do 



do 



do 



do 



do 



Complete, except 3 



or 4 scales. 

 Complete, except 15 



scales. 

 Complete, except 



last 3 or 4 scales. 

 Nearly complete. . . 



Complete 



do 



Left. 



Complete. 



Complete, except about 



scales. 

 Complete. 

 Complete, except 3 or 



4 scales. 

 Complete. 

 Complete, except 3 or 



4 scales. 

 Complete. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Complete, except 3 or 



4 scales. 

 Complete, except last 



few scales. 

 Complete, except last 



3 or 4 scales. 

 Nearly complete. 

 Complete. 



Complete, except 30 

 scales. 



Co-type, in Leland Stanford Jr. Univ. Mus. 



1 Type, No. 47688, U. S. Nat. Mus. 



Eight specimens, each 1^ inches long, from the same locality as Nos. 14 to 22, are 

 similar in color and other characteristics, but the lateral line is entirely absent. 

 The pores on the head are developed in some. Nos. 4 to 11, inclusive, are from Mille 

 Lacs Lake, Aitkin County, and Nos. 12 to 22, inclusive, are from Mud and Elbow 

 lakes, Hubbard County. 



