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. Larva, wliitish, 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. Pupie 

 with the edges of the abdominal segments armed with transverse rows of small 

 teeth. 



The American species in this family may be disposed in the genera Trochilium, 

 iEgcria, and Tliyris. 



Genus X. — Trochilium. 



Wings narrow, entire, all of them, or the hind-pair at least, transparent. An- 

 tenniE short, stout, arcuated, gradually thickened nearly to the end, which is curved 

 but not hooked ; underside generally fringed with a double row of very short bris- 

 tles in the males. Tongue very short. Body thick; abdomen slightly tufted at 

 tlie end. 



Genus XI. — ^iEgeria. 



Wings narrow, entire, all of them, or the hind-pair at least, transparent. An- 

 tennre mostly elongated, sometimes short, arcuated, grrulually thickened nearly to 

 the end, which is curved but not hooked ; underside generally fringed with a dou- 

 ble row of short bristles in the males. Tongue long. Body slender; abdomen 

 nearly or quite cylindrical, ending with a. Hat or trilobed tuft. 



Genus XII.— Thyris. 



Wings broad, subtriangular, more or less angulated and indented, opaque, with 

 small scmitransparent spots. Antenna) fusiform, hut slender and only slightly 

 thickened in the middle, arcuated, and simple in both sexes. Tongue moderate. 

 Body short and thick; abdomen conical, and tufted at the end. 



Tribe II. — Sphinges adscitas. 



The species described in this catalogue may be disposed in three families, Aga- 

 ristiada;, ZygoeuiadsB, and Glaucopididae. 



Family IV. — Agaristiadas. 



Antenna; straight, slightly thickened in or beyond the middle, and curved at the 

 tip. Palpi elongated, slender, not pressed to the face, hairy at base, with the ter- 

 minal joint cylindrical, .scaly or almost naked. Wings broad, subtriangular. Tail 

 hairy or tufted. Flight diurnal. Larva; elongated, cylindrical, or enlarged a little 

 behind, slightly hairy, transversely banded or spotted, and without a caudal horn. 



Genus XIII. — Alypia. 



Wings broad, subtriangular, entire, and opaque, with large whitish spots. An- 

 tennce somewhat elongated and slender, thickened very gradually from beyond the 

 middle nearly to the tip, which is slightly curved, obtuse, and not tufted. Palpi 

 long, porrect, separate, with the first two joints very hairy, and the third joint cy- 

 lindrical, scaly, and obtuse. Tongue moderate, and spirally rolled. Abdomen 

 somewhat elongated, nearly cylindrical, fringed at the sides and tip with short 

 hairs. Anterior and intermediate tibia; thickly clothed with hairs. Posterior tibiaj 

 with two pairs of pretty long unequal spurs. 



