NYMl'IIAI.IXAE: A(;LAIS MILHERTI. 



423 



Deseribed from 6^1?. 



Suffused variety. Gosse (Can. nat. , 248) speaks of lindiug near Coniptoii, Canada, 

 a specimen of this species the wings of whicli agree in everj' respect with the normal 

 type, except that "the first pair on tlie upper surface are black, with only a row of 

 small, indistinct and undefined red spots in the place of the broad, orange band; the 

 liriglit, fulvDUS spots on the front margin are wanting." 



Egg (64 : ;](!, 40). Tale grass green ; ribs nine to ten in number, all reaching from just 

 above base to sunnnit; surface smooth, glistening. Micropyle rosette occupying one- 

 third the diameter of the space between the extremities of the ribs and consisting of 

 about ten kite-shaped (!ells around a common centre, surrounded by one or two i-ows 

 of considerably larger, angular cells, separated by pretty In'oad walls, the outer cells 

 about a third or a fourth as large as all the kite-shaped cells together. Height, .G5 

 mm. ; breadth, .(55 mm. 



Caterpillar. First staye. Head (78 : 54) dark olivaceo-fuscous, the sutures black ; 

 mouth parts and antennae pale, edged with dusky. Body very pale, uniform, greenish 

 yelloAv, almost colorless, the hairs black, on dusky Avarts. Length, 1.7 mm. ; breadth 

 of body, .;> mm. ; of head, .42 mm. 



Second stage. Head (78 : 55) black ; mouth parts dusky with pale annnlations. Body 

 variable, some specimens being pale yellow with slight or somewhat distinct, small, lat- 

 (^ral, triangular, longitudinal, foi'ward pointed, dark yellowish brown spots, one on 

 eacli segment in an infralateral band, the hairs pale on pale waits ; others being yellowish 

 only beneath and on the inferior half of the sides, while above they are heavily 

 mottled with dark rufous brown, as far as and including the infralateral band of the 

 others ; Avithin it are broad, pale, subdorsal bands separated from each other by only 

 an interrupted dusky dorsal line ; the sides are variegated more or less interruptedly 

 Avith rather irregular, mottled, paler reddish broAvn, or broAvnish yelloAv suprastig- 

 matal and inf rastigmatal bands ; hairs black on dusky Avarts. In Ijoth forms the legs 

 and prolegs are dusky green at base, beyond annulate Avith fuscous ; spii'acles black. 

 Length, i5.85 mm. ; breadth of body, .5 mm. ; of head, .7 mm. 



Third stofjc Head (78 : 5(1) black, the Avarts black Avith dark hairs : mouth parts 

 dusky or black. Body umber broAvn or very dark castaueous, Avith narroAv, Avavy 

 longitudinal stripes of pale lemon yelloAV, viz., a subdorsal stripe more distinct on the 

 anterior than on the posterior half of the segments, an inf rastigmatal, prettj' uniform 

 stripe, and a series of pai'tially connected curved stripes on each segment, starting as 

 a slender thi-ead, from just above the inf rastigmatal stripe and arching betAA'een the 

 spiracles to the snprastigmatal line, Avhere it is broadest, sometimes connected above 

 the spiracles so as to make a snprastigmatal band, nearly or quite as uniform as the in- 

 f rastigmatal ; beneath dull greenish yelloAV, mottled faintly Avith broAvnish yelloAv, 

 flecks mostly connected in longitudinal stripes ; prolegs dull green Avith narroAv 

 dusky annnlations ; legs black ; spines and hairs black ; spiracles black in a yelloAv 

 annulus. Length, 8 mm. ; Avidth of body, .9 mm. ; of head, 1 mm. 



Fourth stage. Head (78 : 57) shining bronze black, the Avarts yelloAvish Avhite, Avith 

 mingled Avhite and black hairs ; mouth parts dark. Body above, as far as suprastig- 

 matal line, blackish purple, enlivened bv faint, pale yellow warts, Avholly absent from 

 a dorsal stripe, the spines (86 : 0(5) shining black, and the hairs arising from the Avarts 

 mingled pale and tlusky, from the spines black; interrupted snprastigmatal and con- 

 tinuous infrastigmatal. Avavy. lemon yelloAV stripes; beneath these dull green, heavily 

 mottled Avith umber broAvn; prolegs like the surrounding parts, the apex duskA'; legs 

 black; spiracles black in a livid annulus. Length, 15 mm.; breadth of body, 2.3.5 

 mm. ; of head. 1.5 mm. 



