LIST OF ILLUSTRATIONS. 
MAMMALS. 
Page. 
Plate IV. — Fig. 1.—Spermopkilus graiumurus, Bach... 10 
Fig. 2.—Cynomys gunnisonii, Baird..... 10 
Plate XI.— Sciurus fremontii, Towns....... 10 
Plate X—Fig. 1.—Thomomys rufescens. Max.-......... 10 
Fig. 2.—Geomys castanops, Bd. 10 
UIRDS. 
Plate XII.—Buteo swainsonii, Bon. 16 
Plate XIII.—Buteo swainsonii, Bon...... 16 
Plate XIV. — Buteo calurus, Cassin. 16 
Plate XV.—Buteo oxypterus, Cassin...... 16 
Plate XVII.—Cliordeiles henryi, Cassin..... 16 
REPTILES. 
Plate XVII. — Eutaenia vagrans, B. & G .-. 20 
Plate XVIII.—Nerodia erythrogaster, B. & G... 20 
Plate XXIII.—Masticophis taeniatus, B. & G...-. 20 
Plate XXIV.—Fig. 1. — Crotaphytus collaris, Holbrook. 20 
Fig. 2.—Plestiodon septentrionalis, Bd. 20 
FISHES. 
Plate XXIII.—Amblodon grunniens, Rafin.. 28 
Plate XLIX.—Figs. 1-4.—Ptychostomus kaydeni, Grd. 28 
Figs. 5-9.—Acomus griseus, Grd. 28 
Plate LIV.—Figs. 1-4.—Lavinia exilicauda, B. & G..... 28 
Figs. 5-8.—Argyreus dulcis, Grd. 28 
Plate LVI. — Figs. 1-4.—Pogonichthys inaequilobus, B &G. 28 
Figs. 5-8.—Exoglossum inirabile, Grd... 28 
Plate LXXIII. — Figs. 1-4.—Salar virgiualis, Grd. 28 
Fig. 5. —Q Salar iridca, Grd...-. 28 
Plate LXXV. — Figs 1-4.—Hyodon tergisus, Lesu. 28 
Figs. 5-7. — Meletta ccerulea, Grd. 28 
