212 LEPIDOPTERA OF NORTH AMERICA. 



with a bluish-black stripe along the inner margin, and a line of the 

 same hue along the medio-posterior nervule, joining it near the 

 inner angle, with sub-terminal whitish bands faintly tinged with 

 roseate, and a tawny yellow spot at the tip and inner angle. Pos- 

 terior wings tawny yellow or lutescent, intermixed with brownish 

 toward the costa, and a black ocellus above the inner angle, with 

 a bluish pupil. Under surface 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 cen- 

 tral lines. Length of the body 45 lines ; expanse of the wings 30 

 lines in the J*, 33 lines in the 9- 

 Massachusetts ; New York. 



CLEMENS. 



GEOUP 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 emar- 

 ginate at the tip, hind border entire in the , crenated in the 9. 

 Antennae with the stalk ciliferous, and the articles produced be- 

 neath the stalk each bearing four short pectinations in the J v , and 

 simple in the 9. Palpi short in the 9 and scarcely exceeding the 

 front; in the g exceeding it, divergent, 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 seg- 

 ments of abdomen flattened. 



The position of the larva at rest is not sphinx-like ; it is ex- 

 tended 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 populi. 



