374 



The Grape Culturist. 



the back and another line of the same 

 color continuous, and with its upper 

 edge fading gradually, extended along 

 each side. The six scolloped spots wex-e 

 cream-colored; the head, thoracic seg- 



ments and breathing-holes inclined to 

 flesh-color, and the px-olegs and caudal 

 plal^ were deep brown. The worm is 

 covered more or less with minute spots 

 which are dark on the back but light 



[Fig. 3.] 



Colors — Pink , gi ay and brown . 



and annulated at the sides, while there 

 are from six to eight transverse wrinkles 

 on all but the thoracic and caudal seg- 

 ments. 



The color of the worm, when about 

 to transform, is often of a most beautiful 

 pink or crimson. The chrj^salis (Fig. 2 

 h) is formed within a smooth cavity un- 

 der ground. It is of a dark shiny 

 mahogany-brown color, shagreened or 

 roughened, especially at the anterior 

 edge of the segments on the back. 



Unlike the Hog-caterpillar of the vine, 

 described in our last, this insect is every- 

 where single-brooded, the chrysalis re- 

 maining in the ground through the fall, 

 winter and spring months, and X'roduc- 

 ing the moth towards the latter part of 

 June. "We rather incline to believe how- 

 ever that there may be exceptions to the 

 rule in southerly latitudes, and that in 



such latitudes it may sometimes be 

 double-brooded ; for we have known the 

 moth to issue near St. Louis during the 

 first days of August, and have this very 

 year found two worms in the same local- 

 ity as late as the 25th of October, nei- 

 ther of which was quite full grown, 

 though the leaves on the vines upon 

 which they were found had almost all 

 fallen. 



In Rock Island county, in North Illi- 

 nois, out of three larviB that we had in 

 our breeding-cages in 1868, every one of 

 them developed into the moth state in 

 the first few weeks of the August of the 

 same year ; and we heard several years 

 ago of one larva developing the same 

 season in the adjoining county of Henry. 



Apparently such premature develop- 

 ment of Sphinx moths is a well-known 

 occurrence among the different Euro- 



