178 
ON THE GEOLOGY AND NATURAL HISTORY 
Bufo Woodhousei, Grd., 
SlREDON LICHENOIDES, 
Amblystoma luridum, Baird, 
B. Fishes, 
PERCOIDS. 
Stizostedion boreus, Girard, 
SCIAENOIDS. 
Haploidonotus grunniens, Eaf., 
GASTERASTEOIDS. 
Apeltes inconstans, Gill., 
CYPRINOIDS. 
Pimepiiales fasciatus, Girard, 
Hybognathus argyrites, Girard, 
IIybognatiius Evansi, Girard, 
Rhinichthys dulcis, Gill, 
Platygobio (Pogonichtiiys, Girard) communi 
Gobio gelidus, Girard, 
Leucosomus dissimilis, Girard, 
Leucosomus macrocephalus, Girard, 
Nocomis Nebrascensis, Girard, 
Semotilus speciosus, Girard, 
Plargyrus Bowmani, Girard, 
CATASTOMOIDS. 
Catastomus Sucklii, Girard, 
Acomus lactarius, Girard, 
Acomus grisens, Girard, 
Ptychostomus Haydeni, Girard, 
Carpiodes damalis, Girard, 
HYODONTOIDS. 
Hyodon tergisus, Lesueur, 
SILUROIDS. 
ICTALURUS OL1YACEUS, Gill, 
Noturus flayus, Raf., 
ACIPENSEROIDS. 
SCAPHYRHYNCIIOPS PLATYRIIYNCIIUS, Gill 
Rafinesquii, Iieckel), 
POLYODONTOIDS. 
POLYODON FOLIUM, Lac., 
Along the Missouri river. 
Sand hills, valley of the Platte. 
U (C U 
Fort Union, Missouri river. 
Milk river. 
Yellowstone river. 
Milk river, Upper Missouri. 
tt U U 
Fort Pierre. 
Sweetwater river. 
;, Gill, Milk river. 
U 
U 
Fort Pierre. 
Sweetwater river. 
Platte river. 
Sweetwater river. 
Milk river. 
Platte river. 
YYllowstone river. 
Fort Pierre. 
Fort Sarpy, Yellowstone. 
Yellowstone river. 
u cc 
(SCAPIIYRHYNCHUS 
Upper Missouri. 
Fort Pierre. 
