340 Fishes from the Monongahela River. 



1840, when it was first described by Dr. Kirtland, until recently. 

 Two specimens were obtained April 25, 1885, by Mr. Amos W. 

 Butler, at Brookville, Indiana ; and a day later, Prof. Charles H. 

 Gilbert obtained a specimen from lower down in the same river, 

 — the Whitewater. The collection made by Mr. Bollman con- 

 tains a single specimen which he obtained from the Mononga- 

 hela, about one-half mile below Lock No. 9. This specimen is 

 If inches in length, and does not differ materially from the 

 Brookville specimens. A full description of the Brookville spe- 

 cimens was published by Dr. Jordan in the Proceedings of the 

 United States National Museum for 1885, pp. 163-165. 



35. Etheostoma zonale (Cope).) (916.) 



Zoned Darter. 

 But one specimen of this darter was obtained. 



36. Etheostoma flabellare Rafinesque. (923.) 



Fan-tail Darter. 

 Very abundant everywhere. 



37. Etheostoma cgeruletjm Storer. (936.) 



Rainbow Darter. 

 Perhaps the most abundant darter in the Monongahela. 



38. Stizostedion viteeum (Mitchell). (948.) 



Yellow Pike. 

 Only one specimen taken in the river at Monongahela City. 



39. Aplodinottjs grukniens Rafinesque. (1083.) 



- White Perch. 

 This species was abundant in the river. 



40. Cotttjs richahdsoni Agassiz. (1320.) 



Miller's Thumb. 

 Not very common ; two or three specimens were obtained at Lock 

 No. 9. 



Indiana University, 



March 15, 1886. 



