(43) 



on the top larger than those on the body. Sides of the scales on the body 

 with longitudinal brown spots, forming very distinct, but rather narrow, 

 brown, longitudinal lines Along the center of each scale is a row of very 

 fine brown dots, forming minute lines between the heavier ones along the 

 borders of the scales. Beneath, in front of the anal fin, orange yellow. 



FAMILY UMBRIDAE. 



Genua Mela nil ra^ Linn. 



54. M. limi, ( Kirt.) Ag. Mud Minnow. Exceedingly numerous in 



prairie sloughs and sluggish streams in the northeastern part of the state. 



It is also of very rare occurrence in the streams through the state tributary 



to the Ohio, where it is occasionally taken. 



FAMILY ESOCIDAE. 



Genii!< Esox, lAnn. 

 bb. E. nohilior, Thomp. Muskellunge. Rather common in Lake 

 Michigan, and reported to occur in some of the small lakes in the northern 

 part of the state. 



56. E. luchis, var. t^stor, (^LeS.) Lake Pike. Very abundant 

 throughout the northern part of the state. 



57. ?'^ E. boreus, Afj. Several specimens, about seven inches long, are 

 in the collection of the writer, from the Fox river at Geneva. 



58. E. sabnoneus, Raf. Little Pickerel. Abundant throughout the 

 state. 



59. E. cypJio, Cope. A single specimen, in good condition, from the 

 Fox river at Geneva, agrees in every way with Prof. Cope's description of 

 this species (Proc. A. N. S., Phil., 1865, p. 78), with the exception that 

 the bars and dots are obsolete in my specimen. Although Prof. Cope has 

 referred this to a previously described species, yet so marked are its char- 

 acteristics, that several who have examined my specimen have at once re- 

 ferred it to this species. 



60. E. vmhro-vis, K>rf. Four specimens from the Fox river at Geneva, 

 — Prof. Cope's Var. A. of this species. (Trans. A., Ph. Soc, 1866.) This 

 species approaches closely to sabnoneus, and may eventually be reduced to 

 a variety of that species. 



FAMILY PERCOPSIDAE. 

 Gfinns Percnpsis, A;/. 



61. P. i/uftatii.", Ag. Trout Perch. Numerous in Lake Michigan, 

 and of rare occurrence in the larger rivers. 



FAMILY SALMONIDAE. 



Genus Salmo, Linn. 



62. S. salar* L. Great Sea Salmon. Fox river at Aurora and near 

 Elgin. 



63. S. quinnat* Rich. California Salmon. Fox river at Aurora and 

 near Elgin. 



* As this paper is passing through the press, 1 learn from Dr. W. A. Pratt, of 

 Elgin, that he has taken these two species this summer, at the localities given. I 

 therefore take the liberty of inserting them in this list. — S. A. Forbes. 



