308 Catalogue of North American Sphinges. 



This species is not uncommon in the Southern States, emd I 

 have one specimen which was taken in Cambridge, Mass. 

 3. T? Nessiis. Cramer. 



Dark brown ; fore-wings with a sinuous and angular outer 

 edge, a blackish brown band across the middle, another near the 

 outer margin, and a small rust-red spot near the tip; hind-wings 

 rust-red, with a dark brown hind-border ; abdomen with two 

 pale yellow bands behind the middle, four rust-red spots on each 

 side, and a triple-tufted tail. Expands from two to two inches 

 and a quarter. 



Of this species I have seen only females, in which the antennae 

 are similar to those of the same sex in T. Abbotii. The palpi, . 

 however, are more acuminated, and approach in form to those of 

 Sesia Pclasgus, &c. It ought, perhaps, to be included in a new 

 genus, which, without a knowledge of the larva and pupa, I shall 

 not venture to propose. 



* * Wings entire ; antennoi thickened towards the end, with 

 a mimite terminal hook. 



Genus IX. Sesia. F. (Syst. Gloss.) 



1. /S. Pelasgus. Cramer. 



Wings transparent and iridescent, with a broad purple-brown 

 border and nervures ; antennas and palpi, above, blue-black ; 

 head and thorax olive ; breast and legs eream-white ; abdomen 

 purple-brown below, ochre-yellow above, with the two middle 

 segments and a spot behind them purple-brown, and three lateral 

 white spots ; tip with a central fan-shaped brown tail, and two 

 black tufts on each side of it. Expands from two to two inches 

 and one quarter. 



2. P. diffinis. Boisduval. = fudformis. Smith-Abbot. 

 Wings transparent and iridescent, with a narrow blackish bor- 

 der and nervures, and a rust-red spot at tip ; antennas and palpi 

 black above ; thorax and breast covered with pale yellow hairs ; 

 abdomen black above, with two longitudinal patches of yellow 

 hairs, the two middle segments black, the next two covered with 

 yellow hairs, and the tip with a fan-shaped tail, which is yellow 

 in the middle and tufted with black on each side. Expands from 

 one inch and three quarters to two inches. Larva, according to 

 Abbot, (Ins. Georg. p. 85, pi. 43.) pale pea-green, reddish beneath, 

 with a longitudinal dorsal line, a lateral pale yellow stripe, and a 



