Catalogue of North American Sphinges. 287 
Genus VI.—Deilephila. 
in the males transversely biciliated beneath. Tongue moderate. Abdomen con- 
ical, pointed, and transversely banded at the sides. Larva elongated, not tapering 
before, and the head and first three segments not retractile, with a series of nine or 
ten round spots on each side, and a long caudal horn; transforms in the earth. 
Family Il.—Macroglossiade. 
and concealed ; short, thick, and obtuse at the end in some; slightly elongated 
and subacute in others. Body short and thick, or flattened a little; abdomen tufted 
attheend. Flight diurnal. Larve colored, naked, with a caudal horn, which is 
sometimes obsolete and replaced by a callous spot; they devour the leaves of 
Plants, and enter the earth to transform, or conceal themselves upon the surface in 
a1 imperfect cocoon under leaves. 
In this family we have three genera, Pterogon, Thyreus, and Sesia. 
Genus VII.—Pterogon. 
Genus VITI.—Thyreus. 
Wings angulated and indented. Antenne long, and ending with a long hook. 
Palpi short, thick, and obtuse at the end. Tongue moderate. Abdomen ovoid. 
've elongated, not attenuated before, longitudinally striped on the back, 
obliquely banded at the sides, with a long and straight caudal horn: they trans- 
™ in the earth. 
Genus IX.—Sesia. | 
elongated, subacute, and forming a conical beak. ‘Tongue long. Abdomen short 
back, with a short, slightly recurved caudal horn: they transform in an imper- 
' cocoon under leaves on the surface of the ground. 
Family I1.—AXgeriade. 
Antenne arcuated ; either thickening to beyond the middle, attenuated and 
“Urved but not hooked at the end, and biciliated beneath in the males; or very 
slightly fusiform and almost threadlike, and simple in both sexes. Palpi elonga- 
ted, slender, distinctly three-jointed, prominent, separated and not pressed close to 
Me head, nearly cylindrical, covered with very small scales and almost naked ex- 
