426 LEPIDOPTERA. 



is a bunch or hump, also of a red color ; along the back 

 are several short black prickles ; and the hinder extremity 

 tapers somewhat, and is always elevated at an angle with 

 the rest of the body, when the insect is not crawling. The 

 full-grown caterpillars measure one inch and a quarter, or 

 rather more, in length. They rest close together on the 

 twigs, when not eating, and sometimes entirely cover the 

 small twigs and ends of the branches. The early broods 

 come to their growth and leave the trees by the middle of 

 August, and the others between this time and the latter part 

 of September. All the caterpillars of the same brood de- 

 scend at one time, and disappear in the night. They con- 

 ceal themselves under leaves, or just beneath the surface 

 of the soil, and make their cocoons, which resemble those 

 of the unicorn Notodonta. They remain a long time in 

 their cocoons before changing to chrysalids, and are trans- 

 formed to moths towards the end of June or the beginning 

 of July. Mr. Abbot * states that in Georgia these insects 

 breed twice a year, the first broods making their cocoons 

 towards the end of May, and appearing in the winged form 

 fifteen days afterwards. This Notodonta is a neat and trim 

 looking moth, and is hence called concinna (Plate VI. Fig. 

 11) by Sir J. E. Smith. It is of a light brown color ; the 

 fore wings are dark brown along the inner margin, and 

 more or less tinged with gray before ; there is a dark-brown 

 dot near the middle, a spot of the same color near each 

 angle, a very small triangular whitish spot near the shoul- 

 ders, and several dark-brown longitudinal streaks on the 

 outer hind margin ; the hind wings of the male are brown- 

 ish or dirty white, with a brown spot on the inne'r hind 

 angle ; those of the other sex are dusky brown ; the body 

 is light brown, with the thorax rather darker. The wings 

 expand from one inch to one inch and three eighths. 



Every person who has paid any attention to the cultiva- 

 tion of the grape-vine in this country must have observed 



* Insects of Georgia, p. 169, pi. 85. 



