﻿NORTH AMERICAN SPHINGID^J. 185 



tawny yellow spot at the tip and inner angle. Posterior wings tawny yellow or lutescent, intermixed with 

 brownish toward the costa, and a black ocellus above the inner angle, with a bluish pupil. Undersurface 

 of anterior wings tawny yellow, somewhat reddish brown exteriorly, with yellow spots and white bands 

 corresponding to those on the upper surface. Posterior wings reddish brown, with two parallel, irregular 

 rosy white central lines. Length of the body 45 lines ; expanse of the wings 30 lines in the % , 33 lines in 

 the 9. 



Dr. Harris' collection, by the favor of Mr. S. H. Scudder. 



Egg. ? 



Young Larva. ? 



Mature Larva. ? 



Pupation. ? 



Food-plants. ? 



Geographical distribution. — Massachusetts, New York. 



Group II. 



The hind margin of the anterior wings somewhat excavated from the tip to medio- 

 central nervule, and thence rounded to the inner angle, entire in the %, crenated 

 in the 9 . Posterior wings emarginate at the tip, hind border entire in the % 

 crenated in the ?. Antennae with the stalk ciliferous, and the articles produced 

 beneath the stalk each bearing four short pectinations in the % , and simple in the $ . 

 Palpi short in the ? and scarcely exceeding the front ; in the % exceeding it, diver- 

 gent, almost attaining the level of the vertex, the development being in the second 

 article and the third rudimental ; the tongue about as long as the palpi. 



Larva. — Is granulated on transverse wrinkles, tapers anteriorly, the thoracic rings 

 being slender. The head is pyramidal and granulated, the vertex elevated above the 

 dorsum and bifid ; caudal horn densely spined. The pupa is rough, with the terminal 

 segments of abdomen flattened. 



The position of the larva at rest is not sphinx-like ; it is extended along the mid- 

 rib of a leaf, and when disturbed, throws its head from side to side, making a 

 crepitating noise. 



This group has its European representative in Smerinthus jpopuli. 



90. S. juglandis. — Sphinx juglandis Abbot & Smith, I. 57, pi. 29. Amorpha dentata juglandis Hiibner, 

 Exot. Schmett. I., Lep. II., Sphing. III., Leg. IV., Amorph. B., Denb. b. f. 1-4. Polyptychic 

 juglandis Hiibner, Verz. Schmett. 141, 1513. Smerinthus juglandis Harris, 292, 5. Bombyx ? 

 Emmons, Nat. Hist. A". Y., V. pi. 45, f. 9, an indifferent figure of the % . 

 Palpi reddish brown or dark brown ; head and thorax pale fawn-color or pale grayish, with a more or 

 less distinct thoracic dorsal, brownish stripe. Abdomen fawn-color or unicolor. Anterior wings, from the 

 base to about the middle of disc, pale gray, with a faint lilac tinge or pale fawn-color, and a brownish line 

 crossing the basal part of the disc ; a broad median shade, with its posterior margin commencing on the costa 

 midway between the origin of post-apical vein and the tip, and inclined to about the middle of inner margin, 

 darkest at the edges and ochraceous brown, dark brownish or ferruginous brown, and sometimes almost obso- 

 lete above the medio-posterior vein, whence is emitted two lines which mark the outline of the shade ; a line 



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