﻿NORTH AMERICAN SPHINGIDiE. 135 



once and a half longer than the thorax, semi-oval in outline, tufted with terminal and 

 lateral tufts. The thorax is thick, hairy, globosely rounded in front with meta- 

 thoracic sub-tufts. The wings are narrow and rather long. The anterior in length 

 equal to that of the body, truncate at the tips, angulated opposite the medio-superior 

 nervule, excavated from post-apical to superior and doubly excavated from the 

 superior nervule to the inner angle. Posterior wings, tip rounded, hind border 

 denticulated and the inner angle somewhat salient and acute. Male. — Antennas 

 ciliferous. Female. — Almost cylindrical and simple. 



Larva. — The head is moderate and the body is naked, wrinkled transversely, and 

 tapers gently from the fourth segment, and is furnished with a lenticular tubercle on 

 the eleventh segment instead of a caudal horn. Its position when disturbed is not 

 sphinx-like ; it shortens the anterior rings and throws the head from side to side, 

 making at the same time a crepitating noise. When on the ground its motions under 

 irritation are often violent. It prepares for pupation on or near the surface of the 

 ground. 



12. T. Abbotii Swainson, I. pi. 60. Harris, p. 307, 2. Kirtland, Proc. Acad. Nat. Sci., 1837, p. 148 



Head, palpi and thorax dull chocolate brown ; protliorax with a blackish-brown transverse line and two 

 others crossing the middle of thorax ; abdomen dark brown, lighter in the middle ; terminal tufts dull 

 yellowish-brown in the male, and female with a large light yellowish central pencil and small lateral 

 brownish ones. Anterior wings dull chocolate brown, lighter beyond the middle, even yellowish-brown in 

 the female ; an oblique dark brown line passing behind and near to the minute dark brown discal dot ; 

 several dark brown lines on the inner margin and curving obliquely to the lower part of medio-superior 

 nervule, and proceeding thence to the costa as sharply angulated lines and long dark brown dashes projecting 

 upward in the interspaces ; apical interspace grayish brown, with a dark brown sagittal dash on the margin 

 and others in the three following marginal interspaces : fringes dark brown. Posterior wings sulphureous, 

 with a dark brown terminal band, breaking into a series of short lines in a slightly roseate space above 

 anal angle ; fringes brown. 



Egg. ? 



Yonng Larva. ? 



Mature Larva. — Male — Head dark brown, banded broadly at sides with light green and with a narrow, 

 central short greenish band. Body reddish brown, with numerous patches of light green, oval on the 

 dorsum and irregularly triangular on the sides, with an interrupted, subdorsal chocolate colored line. The 

 lenticular tubercle on the eleventh segment is black, encircled at the base by a yellowish line and a blackish 

 cordate patch ; anal shield pale green terminally and brown above, crossed by irregular brown lines. 

 Female. — Body uniform reddish brown or blackish brown, immaculate ; with interrupted dark brown 

 subdorsal lines and numerous transverse strise. Length about three inches. Swainson's figure of this 

 larva is erroneous. 



Pupation. — The transformation of the larva takes place in a superficial cell. The pupa is dark brown ; 

 the head case broad and rounded ; the tongue case not apparent and level with the breast. There is, I 

 think, but one annual brood. The larva reaches its development about the latter part of July, and enters 

 the pupa state to appear in the following spring as an imago. 



Food-plants. — The indigenous and cultivated grape vines, and Amphclopsis quinquefolia. 



Geographical distribution. — New York, Pennsylvania, Georgia, Massachusetts, Ohio. 



