138 ZYG.liXID.'E AND BOMBYCID.E 



Beneath as above, except that the markings on the primaries are 

 very indistinct. 



Expanse of Wings, 1.90 inches; leiigih of body, 0.70 inch. 



^Z(^?'/^/.— Atlantic and Western States. (Coll. generally.) Canada. 

 (Saunders.) 



Larva. — Head black, polished, the mouth varied with white. Body 

 opaque, black above, pale on the venter, covered above with dense 

 hairs proceeding from little warts in evenly shorn brushes or tufts, 

 which are dorsally a little darker, and vary in color in different 

 specimens from dirty whitish or occasionally almost pure white to 

 fuscous cinereous, and from pale gamboge-yellowish to ochre-yellow- 

 ish and pale yellowish-brown, the brushes on the back converging so 

 as to form a dense dorsal ridge. On the 2nd segment behind the 

 head one lateral black pencil and two milk-white ones under it, all 

 transversely arranged, the black pencils generally in repose directed 

 horizontally forwards. On the 3rd segment one lateral black pencil 

 and one milk-white one under it, directed obliquely forward. On 

 the I nil segment one lateral black pencil directed obliquely back- 

 wards, and on the 12th segment one less obvious pencil, which is 

 either whitish or the color of the tufts of the body, placed immediately 

 behind the black pencil on the iith segment, and often with a few 

 long black hairs above it. Besides the pencils, there are also some 

 long whitish hairs projecting forwards over the head, and backwards 

 over the anus. Legs and prolegs very pale ferruginous, slightly ob- 

 fuscated at tips. When much less than half grown, the head is 

 generally not black but rufous, the black pencil on the 2nd segment 

 is often only sliglitly tinged n-ith black, and the pencils on theiith 

 and I2tli segments are occasionally subobsolete, or all whitish and 

 untinged with black. Food-plants, oak, basswood, elm, etc. (Dr. 

 Walsh, Troc. Ent. Soc. Phil. vol. 3, p. 413.) 



This is the larva of H. an/iphoLi, Walsh. 



Lai'va var. — The larva sometimes has the head rufous ; the body 

 yellowish-white, with the warts and a ring round each spiracle brown 

 black ; the hair-tufts milk-white, the two middle pencils on segments 

 2 and 3 orange color, and the two pencils on segment 11 milk-white. 

 This variety is found feeding on the sycamore and is Dr. Walsh's 

 phytophagic variety //. Hanisii. (Proc. Ent. Soc. Phil vol 5, p. 



199) 



In the various papers from which the above quotations have been 

 made Dr. Walsh has labored earnestly to make two species out of 



