178 ON THE GEOLOGY AND NATURAL HISTORY 
Buro Woopxovst!, Grd., 
SIREDON LICHENOIDES, 
AMBLYSTOMA LURIDUM, Baird, 
PERCOIDS. 
STIZOSTEDION BOREUS, Girard, 
SCIAENOIDS. 
HAPLOIDONOTUS GRUNNIENS, Raf., 
GASTERASTEOIDS. 
APELTES INCONSTANS, Gill., 
CYPRINOIDS. 
PIMEPHALES FAScIATUs, Girard, 
B. Fishes. 
HyYBoGNATHUS ARGYRITES, Girard, 
Hysognatuus Evansi, Girard, 
RuINICHTHYS DULCIS, Gill, 
Piatyeosio (Poconicutuys, Girard) communis, Gill, 
Gosio GELIDUS, Girard, 
LEUCOSOMUS DISSIMILIS, Girard, 
LEUCOSOMUS MACROCEPHALUS, Girard, 
Nocomis NEBRASCENSIS, Girard, 
SEMOTILUS SPECIOSUS, Girard, 
PiarGyrus Bowmanl, Girard, 
CATASTOMOIDS. 
CaTastomus SuckLu, Girard, 
AcoMUS LACTARIUS, Girard, 
ACOMUS GRISENS, Girard, 
PrycHostomus HaAypeEnt, Girard, 
CARPIODES DAMALIS, Girard, 
HYODONTOIDS. 
Hyopon TERGIsUS, Lesueur, 
SILUROIDS. 
IcTALURUS OLIVACEUS, Gill, 
Norurus FLAVUuS, Raf., 
ACIPENSEROIDS. 
Along the Missouri river. 
Sand hills, valley of the Platte. 
(5 ce (15 
Fort Union, Missouri river. 
Milk river. 
Yellowstone river, 
Milk river, Upper Missouri. 
CG (14 14 
Fort Pierre. 
Sweetwater river. 
Milk river. 
ce 
(14 
Fort Pierre. 
Sweetwater river. 
Platte river. 
Sweetwater river. 
Milk river. 
Platte river. 
Yellowstone river. 
Fort Pierre. 
Fort Sarpy, Yellowstone. 
Yellowstone river. 
ce (39 
ScAPHYRHYNCHOPS PLATYRHYNCHUS, Gill (ScAPHYRHYNCHUS 
Rarinesquit, Heckel), 
POLYODONTOIDS. 
PoLyopon FoLiuM, Lac., 
Upper Missouri. 
Fort Pierre. 
