240 ^^s Philippine Journal of Science 1917 



date in 1902 and 1903 proved to me the extreme variability of 

 the females of this species as will be perceived by the notes on 

 four varieties. I have taken the young larvae at Hakodate in 

 October, so that in Hokkaido, where the winter is very severe 

 and lasts for five months, the larva probably hibernates. The 

 pupa is brownish black and is inclosed in a loose-webbed cocoon. 

 I also bred two males, July 24 and August 2, 1902, respectively, 

 at Hakodate, Hokkaido. 



Larva. Purplish fuscous with mixed hairs of whitish and blackish; 

 head ochraceous brown; legs brownish; a yellowish dorsal line with some 

 indistinct irregular lateral lines; tubercles of dorsal half, metallic blue; 

 lateral ones ochraceous brown. Food-plants: mulberry-, peach-, pear-, 

 cherry-, apple-tree; Quercus serrata; Q. glandulifera; &c.'* 



The above description of the larva agrees well with my original 

 figure with one exception. In my figure a yellowish midlateral 

 line is represented; perhaps Miyake includes this in "some indis- 

 tinct irregular lateral lines." Like its near ally, Diacrisia impd- 

 rilis, it seems to be a general feeder. 



Imago. — The female of this species is subject to very great 

 variation in the fuscous markings of the fore- and hindwings. 

 In a series of seventeen examples especially selected out of forty- 

 one specimens (most of them captured near Hakodate) with the 

 object of illustrating this variation, no two specimens are exactly 

 alike in markings. Generally speaking,, they can be divided 

 into four varieties. 



Variety 1 (Plate II, figs. 4 and 5), immaculalis var. nov., col- 

 lection Wileman No. 269. Immaculate; fuscous markings re- 

 ferred to by Hampson ^^ in his description entirely obsolete on 

 the upper side of both fore- and , hindwings ; on the underside 

 the discocellular spot of the forewing and the discoidal spot of 

 the hind wing are faintly perceptible. 



Variety 2, unfigured, unnamed. Fuscous markings very faint, 

 being faintly present in some specimens on both fore- and hind- 

 wings and in other specimens on the hindwings only. 



Variety 3 (Plate II, figs. 6 and 7) , unnamed, collection Wileman 

 No. 269c. Moderately maculated ; the fuscous markings on both 

 the fore- and hindwings are more prominent; two spots, one on 

 subcostal nervure and one on costa of forewing; the commence- 

 ment of an interrupted antemedial band is represented by four 

 spots, one on the inner margin, one beyond vein 1, one on discocel- 



" Miyake, Bull. Coll. Agr., Tokyo Imp. Univ. (1909), 8, 167. 

 "Cai Lep. Phal. (1901), 3, 312, c? and ?. 



