I'VPRINID.K, OR MINNOWS. 



7. Hybognathas nuchalis placita Grd. Western Silvery Minnow. Cot- 

 tonwood, Hat, and Middle creeks, and South Fork of Cheyenne and Belle 

 Fourche rivers. 



8. Pimephales promelas Raf. Black-headed Minnow. Middle, Rapid, 

 Cottonwood, and Hat creeks. 



9. Notropis deliciosus (Grd.) Middle, Rapid, Cottonwood, and Hat creeks, 

 and Belle Fourche River. 



10. Rhinichthys dulcis (Grd.) Western Dace. Whitewood, Chicken, 

 Crow, Rapid, Cottonwood, and Hat Creeks, Cook's Pond, near Spearfish, 

 and Fall River. 



11. Couesius dissimilis (Grd.) Found only in Rapid Creek. 



12. Platygobio gracilis (Rich.) Flat-headed Minnow. Middle, Cotton- 

 wood, and Hat creeks, and Belle Fourche and South Fork of Cheyenne 

 rivers, in all of which it is abundant. 



13. Semotilus atromaculalus (Mitch.) Chub. Found only in Chicken, 

 Crow, and Rapid Creeks. These are the most western localities from which 

 this fish has been reported. 



14. Leuciscus neog.rus (Cope.) Found by us only in Cox's Lake and 

 Chicken Creek, near Gammon's ranch, S. D. 



GADID.K, OK COD-FISHES. 



15. Lota lota maculosa (Le Sueur. ) One specimen obtained at Cheyenne 

 Falls. This is the only fresh water representative of the codfish family. 



These fifteen species are, so far as known, the odIv fishes found native to 

 the Black Hills. It is the intention to continue the investigations in that 

 region during a portion of the coming summer, when it is expected that 

 the exact limits in the range of at least some of these species may be 

 made out. It is especially desirable to determine in what streams the 

 spiny- rayed fishes make their nearest approach to this region. 



The ptarmigan of the Aleutian islands. By B. W. Evermann. 

 [Abstract.] 

 It was my good fortune to spend the six months from March to Septem- 

 ber, 1892, on board the U. S. Fish Commission steamer Albatross, which 

 was engaged during that time investigating the habits, abundance and 

 distribution of the fur-seal in the North Pacific and Bering sea. While 



