Catalogue of North American Sphinges. 309 



short recurved caudal horn. In Georgia, it feeds upon the Ta- 

 bernmmontana Amsonia, and forms an imperfect cocoon on the 

 surface of the ground. Pupa brown with the abdominal incisures 

 ochre-yellow. 



My specimens were presented to me by Mr. Leonard, who cap- 

 tured them in New Hampshire, where the Tabernamontana does 

 not grow. The larva must, therefore, be sought upon some other 

 plant ; perhaps it may be found upon the Apocynum. M. Bois- 

 duval has named and given a figure of this species in his Hist. 

 Nat. des Insectes Lepido[)teres, Vol. I, pi. 15, fig. 2; and, as it is 

 evidently distinct from the European /«a/or?ms, I have retained 

 the name proposed by M. Boisduval, although he has not estab- 

 lished a claim to it by any description of the insect. Mr. Kirby's 

 S. ruficaudis (Faun. Bor. Amer. IV, p. 303,) is evidently different 

 from this species, and comes nearer to the Pclasgus, to which, 

 however, the description does not very well apply, in many 

 respects. 



Family III. iEGERIAD^. H. 'i'he JEgerians. 



Genus X. Trochilium. (Scop.) Stephens. 



Sesia. F. (Entom. Syst.) Latr. Boisd. JSgeria. F. (Syst.Glossat.) 



1. T. marginatum. H. 



Black ; wings transparent ; first pair with a broad border, the 

 tip, and a transverse band beyond the middle pale brown ; hind- 

 wings with a broad black fringe ; antenna! black ; two longitu- 

 dinal lines on the thorax, hind margins of the abdominal seg- 

 ments, orbits, palpi, and legs, except at base, yellow. Expands 

 rather more than one inch and a quarter. 



This insect was taken in New-Hampshire, and presented to me 

 by the Rev. L. W. Leonard. 



2. T. tibiale. H. 



Brownish ; wings transparent ; first pair with a narrow border 

 and an abbreviated band beyond the middle pale brown ; hind- 

 wings with a narrow brownish fringe ; antenna black ; orbits, 

 two lines on the thorax, edges of the abdominal segments, and 

 tibiae yellow ; hindmost tibias thickly covered with yellow hairs. 

 Expands one inch and a half The yellow bands on the abdo- 

 men are much narrower and less bright than in the marginatum. 



Found in New-Hampshire on the Populus candicans, and pre- 

 sented to me by Mr. Leonard. 



