85 



zvith a black dash on the inner margin ; on the under side the males 

 have tiuo black spots corresponding with those of the females." 



NapcBCE, Westwood says, is of a larger size than the ordinary 

 specimens of Napi, and, quoting from Stephens : " The male has 

 the upper surface milk-white, with the tip, a spot, and two or 

 three triangular dashes on the hind margin of the anterior wings 

 black; beneath two cinereous spots; the posterior wings are pale 

 yellowish, zvith a deeper costal streak, the basal nervule above 

 \i. e., towards costa) dilated and greenish. The female has the 

 tip of the anterior wings and three spots, one of which is sub- 

 triangular, and placed on the thinner edge of the wing (the 

 inner margin) black or dusty, and the posterior wings are clearer 

 yellow." 



Boisduval says briefly (Spec. Gen. 1,519) : " Napcece. A little 

 larger than Napi ; the under side of secondaries shows only 

 some short dusky veins extending from base to end of cell, but only 

 towards costal margin." 



Humphreys-Westwood figure and describe a small form, 

 P. Sabellicce, thought by Stephens and others to be a distinct 

 species, described as having the veins on each side strongly mar- 

 gined with brown, " dark margins of the veins both on upper and 

 under surface," but they give reasons for regarding it as a variety 

 of Napi. Boisduval, in Spec. Gen., says nothing of this form, and 

 Staudinger's Catalogue makes no mention of it. So that it would 

 seem to be an occasional aberration, and, from the description, 

 resembles some of the American varieties. I only know this 

 SabelliciB from H.-W., and I find in the catalogues of Kirby 

 and Staudinger no reference to any other named variety of Napi. 

 Whether Sabellicce is an offshoot of the winter or summer form 

 is not said. 



Dr. Weismann sent me i (^ 3 ? labelled " summer genera- 

 tion, Napa;cB, taken 30 June." The females have a large pale 

 black apical patch, three large deep black spots beyond cell, the 

 upper one partly concealed by the paler apical patch, and on 

 costa of secondaries is a foiirth black spot nearly as conspicuous 

 as either of the others. On the under side 2^x0. two large black 

 spots on fore wing corresponding to the lower two of upper side, 

 the upper spot of that side not being repeated. TJlc spot 07i sec- 

 ondaries is repeated. Under side of secondaries pale yellow, the 

 nervures next base bordered with brown scales most heavily on 

 the costal side. The male has the tip largely pale black, and 

 but one spot on fore wing, another on costa of secondaries. Be- 

 neath, primaries have tzvo spots: secondaries are pale yellow, 

 with a deeper yellozv edging to costa from base to outer ajigle. I 

 have another male which has two spots on upper side of primaries 

 and a black dash along inner margin. This also has the yellow 

 edging spoken of. • 



These are therefore the three forms under which the species 



