136 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



also the dark blotch between this line and the apex is narrower and 

 much less distinct than in the male of P. cHntonii (leucophcea). 



The females are readily separated from those of P. leucophoea, as they 

 lack the large brown patch near the apex of the fore wings. 



1 have received the eggs of this moth 

 from Miss Emily L. Morton, of Newburgh, 

 N. Y., which hatched July 28th. After- 

 ward, the same season, I received a batch 

 of eggs from Mr. Roland Thaxter, then in 

 Aiken, S. C, where they were laid August 



Fig. 42. — Parorgyiaparallela, male 

 (from photographs). 



Fig. 43. — Parorgyia parallela, female 

 (from a photograph). 



2d. They hatched in Maine, August 9th to 11th and molted for the 

 second time August 26th. 



It appears that the larvae before the last molt contract in length and 

 hibernate ; spin a cocoon the following July, the moths appearing in 

 the end of July in New York, and sometimes not until late in Augusts 



Larva — lat stage. July 2bth. Length 2.5"^">. Head rounded, not very large, black, 

 retracted within the very wide prothoracic segment, which has on each side a large 

 black tubercle, larger than those on the abdominal segments; between the two 

 tubercles is a median dark patch. On the two succeeding thoracic segments the 

 tubercles are small. On each abdominal segment are two dorsal and two lateral black 

 tubercles on each side. From the tubercles arise loose tufts of tawny brown and pale 

 hairs, of unequal length, some twice as long as the body, so that the larva looks 

 somewhat like an arctian or a young Clisiocampa or Gastropacha, and quite different 

 from a young Orgyia. On the 5th abdominal segment is a clear pale dorsal space, the 

 tubercles being absent. The thoracic legs are dark, while the abdominal legs are 

 long, pale, like the body. August 3d and 4th, shortly before the first molt, the body 

 became rather wider and flatter, and the hairs not so dense. Length, 3-4""". 



2d stage. — Aug. 6th first molt. Length 4-5">™. The generic characters, i. e., those 

 peculiar to the final stage of the caterpillar, now begin to reveal themselves. The 

 hairs arising from the prothoracic segment extend out horizontally over the head and 

 are very long and finely parted, so as to be feathery, some of them being nearly as 

 long as the body ; those arising from the end of the body are as long as those in front. 

 The lateral outstretched hairs have fine long barbs so as to be beautifully feathery, 

 as on the upright dorsal ones. There is a large, dark, irregular dorsal tuft on the 

 second and third abdominal segments, and a smaller, but still large and dense, one on 

 the eighth segment. 



On the 6th and 7th abdominal segments is a single median white tubercle, situ- 

 ated on a dark ground. These two tubercles are highly retractile, and appear to be 

 homologous with the coral-red retractile tubercles of Orgyia. They are each situated 

 slightly in advance of the two dorsal tubercles of the same segments. The prothoracic 



