II 



was present just below the stigmata of seg. 3, also a smaller lateral 

 spot on seg. i. Segments 2 and 3 are somewhat larger, and seg. i 

 somewhat smaller than the rest. Head yellow-mottled with dark 

 brown, the mottling contrasting. Beneath, dirty yellow, smooth, 

 cylindrical, tapering posteriorly. Head prominent, moderate. 

 Cocoon in moss, very slight, August 27, Pupa legs, i. When at 

 rest the larva rests either like a Notodontian, the anterior and 

 posterior portions of the body being elevated, or bent so that the 

 head rests upon the posterior segments. When not feeding the 

 larva conceals itself in a case formed by curling down the edge of 

 a leaf, as in the preceding species. Length 30 m. m. 



I was unable to observe the early stages and only noted that 

 the first was pinkish, without marks, and that in the stage before 

 the last moult the larva closely resembled JSlotodonta stragida in 

 its early moults. 



PLATYCERURA FURCILLA. Pack. 



Mr. Lintner has described the more common brown form of 

 this larva in his Entomological Contributions, and the following 

 is a description of a second form, which differs so markedly from 

 that described by Mr. Lintner that I have, until very recently, 

 considered it to belong to another species. Imagos, however, 

 reared last summer from both forms show no constant variation. 



The normal form is light chestnut-brown, with tufts of hair 

 of the same color, the larger pencils on segs. I, 2, 4, ii, deep 

 chestnut, tipped with black. In the present dimorphic form the 

 color is glossy black, growing dull and tinged with green, as the 

 larva matures. Sparsely clothed with tufts of white hairs of 

 about twelve tufts on each segment, except the first and last. 

 These tufts are small and the hairs are of irregular length. On 

 segs. I, 2, 4, II are set pairs of sub-dorsal tufts, as in the normal 

 form, but clear white or tinged with olive. There is a lateral row 

 of whitish spots extending superiorly and anteriorly just below 

 the stigmata, which are greenish-white. Otherwise the larva is 

 without marks. Head shining black, clothed with a few hairs 

 and with two indistinct whitish frontal streaks. Legs and pro- 

 legs light brown, moderately short, tapering posteriorly. Rests 

 extended on a twig, with the head drawn down so that its frontal 

 surface is parallel to the twig. Spins a double cocoon much like 

 CJiaradra, in September (9th to 25th), the imago appearing in 

 June and July. Feeds on white pine. 



A similar larva was found on Linden, September 15, indicat- 

 ing a great variety in the food plant. The larva, when young, 

 fed only upon the margins of the leaves. 



Charadra deridens. Giien. 



Eggs on red oak July 4, flattened, ribbed, whitish, deposited 

 singly or in rows on under side of leaf. Hatched July 11. 



Young larva. Light green. On segments 2, 3, 4, 5, 6, re- 

 spectively, a large, roundish, red sub-dorsal spot. Head large, 



