288 Catalogue of North American Sphinges. 
cept at the base, which is hairy, and pointed at the tip. Wings more or less trans- 
parent. Abdomen with a caudal tuft. Flight diurnal. Larve whitish, soft, 
slightly downy, living within the stems of plants, and generally transforming in a 
cocoon made of fragments of wood and bark cemented by a gummy matter. pe 
with the edges of the abdominal segments armed with transverse rows of 
teeth. 
The a aire a tsa in this family may be disposed in the genera Trochilium, 
£geria, and T 
Genus X.—Trochilium. 
Wings narrow, entire, all of them, or the hind-pair at least, transparent. An- 
tenn short, stout, arcuated, gradually thickened nearly to the end, which is curved 
but not Vinckid ; underside generally fringed with a double row of very short bris- 
tles in the inales: Tongue very short. ‘Body thick ; abdomen slightly tufted at 
the end. 
Genus ae ea 
ble row of — mention baa the males. Tongue long. Body slender; abdomen 
nearly or y 1, ending with a flat or trilobed tuft. 
Genus XII.—Thyris. 
a broad, subiriangular, more or less angulated and indented, opaque, W! 
small semitransparent spots. Antenne fusiform, but slender and only sigh 
thickened in the middle, arcuated, and simple in both sexes. ‘Tongue moderate. 
Body short and thick ; abdomen eonical, and tufted at the en 
| Tribe I .—Sphinges adscite. 
The species described in this ae may be disposed in three families, Ag? 
ristiade, Zygeniade, and Glaucopidide 
Family IV.—Agaristiade. 
Antenne straight, slightly thickened in or beyond the middle, and curved at the 
ip. Palpi elongated, slender, not pressed to the face, hairy at base, with the ter- 
minal joint cylindrical, scaly or almost naked. -Win ngs broad, subtriangular. re 
hairy or tufted. Flight diurnal. Larva elongated, cylindrical, or enlarged @ 
behind, slightly hairy, transversely banded or spotted, and without a caudal horn. 
Genus XIII.—Alypia. , 
<7 re peter, sabtrianguter, entire, and opaque, with large whitish spots. An- 
elongated and slender, thickened very gradually from beyond — 
middle nearly to the tip, which is tightly curved, obtuse, and not tufted. Palpt 
long, porrect, sig with the first two joints very hairy, and the third joint «8 
lindrical, peels and obtuse, ‘Tongue moderate, and spirally rolled. Abdome co 
somewhat elongated, nearly cylindrical, frittged at the sides and tip with sh 
hairs. Anterior and intermediate tibiae _— clothed with hairs. Posterior bie 
with two pairs of pretty long unequal spurs 
