128 ZYG^NID^E AND BOMBYCIDyE 



round, placed on the front edge of each segment close to the dorsal 

 line and carries black hairs; row two is larger ovate, placed transversely 

 somewhat behind row one, and carries black hairs. These two rows 

 are obsolete on segments i, 2, 3 and 12. Row three is prominent, 

 placed longitudinally, and carries mixed black and brown hairs, being 

 obsolete on segment one. Rows four and five are prominent, carry 

 reddish brown hairs and are obsolete on segment 12. Row six imme- 

 diately above the feet, carries reddish brown hairs, and is present on all 

 the segments. Segments 4, 5, 10 and 1 1 have each four small ventral 

 tubercles carrying short hairs, and segment 12 has two. A few of the 

 hairs of the anal segment are much longer than the others. Saunders 

 states that the " larva hybernates when partly grown, and completes its 

 growth the following spring. It feeds readily on lamb's quarter 

 {Chenopodiutu album) or even grass." The imago appears from May 

 to August (Packard), and is not a rare insect. 



In relation to the mooted question of what insect was described by 

 Kirby under the name of Callmorpha parihenice, I quote as follows 

 from the pen of Mr. Grote, (Proc. Ent. Soc. Phil. vol. 3, p. 324,) 

 believing the position there taken to be tenable : " Until Kirby in 

 1837 described, without figuring his Callimorpha parlhetiice, no second 

 species nearly allied in coloration and ornamentation to Arciia virgo 

 Linn, had been suspected by authors. Since Kirby wrote, this species 

 has been sought for by Entomologists in a form of A. virgo, in which 

 the series of spots on the posterior wings show a dilTerence of size or 

 position. I have elsewhere stated that I consider A. parthenice of 

 authors as identical with A. virgo Linn., and since rearing imagos of 

 both sexes from larvoe kindly sent me by Mr. William Saunders as the 

 larvse oS. A. parthenice, I see no reason for altering my opinion. While 

 I have little hesitation in referring A. parthenice of Messrs. Saunders 

 and Packard to A. virgo Linn., I am not so certain that C. parthenice 

 of Kirby should be similarly referred. This author's description of 

 the anterior wings equally applies to A. virgo Linn, with A. Saundersii 

 Grote, and it is on the anterior wings more especially that I have seized 

 upon a character which I believe is specific and will readily distinguish 

 the latter species, viz.: the linearity of the stripes on the veins Kirby's 

 description of the posterior wings, as well perhaps as the given expanse, 

 would indicate A. Sau7idersii as the species intended, for in all my 

 specimens the discal spots are absent and there are but five terminal 

 spots, the expanse being \\ to i| inches, Kirby giving die latter 



