Catalogue of North American Sphinges. 309 
short recurved caudal horn. In Georgia, it feeds upon the Ta- 
bernemontana 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 T’abernemontana does 
hot 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 Lépidoptéres, Vol. I, pl. 15, fig. 2; and, as it is 
evidently distinct from the European fuciformis, 1 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 
8. ruficaudis (Faun. Bor. Amer. IV, p. 303,) is evidently different 
ftom this species, and comes nearer to the Pelasgus, to which, 
however, the description does not very well apply, in many 
respects. 
Family Ill. AEGERIADE. H. The Algerians. 
Genus X. 'Trocutium. (Scop.) Stephens. 
Sesia. F. (Entom. Syst.) Latr. Boisd. 4igeria. 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 ; antenne black ; two longitu- 
_dinal lines on the thorax, hind margins of the abdominal seg- 
Ments, orbits, palpi, and legs, except at base, yellow. Expands 
father 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 ; antenne black ; orbits, 
two lines on the thorax, edges of the abdominal segments, and 
tibiae yellow; hindmost tibiee 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. 
