LEPIDOPTERA. 229 



Jlchemon expands from three to four inches, is of a reddish ash- 

 color, with two triangular patches of deep brown on the thorax, 

 and two square ones on each fore-wing ; the hind-wings are pink, 

 with a deeper red spot near the middle, and a broad ash-colored 

 border behind. 



The grape-vine suffers still more severely from the ravages of 

 another kind of Sphinx caterpillars, smaller in size than the pre- 

 ceding, and like them solitary in their habits, but more numerous, 

 and, not content with eating the leaves alone, in their progress 

 from leaf to leaf down the stem, they stop at every cluster of 

 fruit, and, either from stupidity or disappointment, nip off the 

 stalks of the half-grown grapes, and allow them to fall to the 

 ground untasted. I have gathered under a single vine above a 

 quart of unripe grapes thus detached during one night by these 

 caterpillars. They are naked and fleshy like those of the Ache- 

 mon and Satellitia, and are generally of a pale green color (some- 

 times, however, brown), with a row of orange-colored spots on 

 the top of the back, six or seven oblique darker green or brown 

 lines on each side, and a short spine or horn on the hinder ex- 

 tremity. The head is very small, and, with the forepart of the 

 body, is somewhat retractile, but not so completely as in the two 

 preceding species. The fourth and fifth segments being very 

 large and swollen, while the three anterior segments taper ab- 

 ruptly to the head, the forepart of the body presents a resemblance 

 to the head and snout of a hog. This suggested the generical 

 name of Cha>roca?npa, or hog-caterpillar, which has been applied 

 to some of these insects. The species under consideration is 

 found on the vine and the creeper in July and August ; when fully 

 grown it descends to the ground, conceals itself under fallen 

 leaves, which it draws together by a hw threads so as to form a 

 kind of cocoon, or covers itself with grains of earth and rubbish 

 in the same way, and under this imperfect cover it changes to a 

 pupa or chrysalis, and finally appears in the winged state in the 

 month of July of the following year. The moth, to which Sir 

 James Edward Smith gave the name of Pampinatrix, from its 

 living on the shoots of the vine, expands from two and a half to 

 three inches, is of an olive-gray color, except the hind-wings, 



