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Show 1887.] OF JAPAN AND COREA. 407 14. A P O R I A CRAT.EGI, Linn. Specimens from Hakodate do not seem to differ in any way from European examples. 15. PIERIS RAPJE, Linn. P. crucivora, Boisd. Sp. Gen. i. p. 522 (1836). Var. orientalis, Oberth. Et. Ent. v. p. 13 (1880). Ganoris crucivora, Butl. Ann. & Mag. Nat. Hist. ser. 5, ix. p. 18. Very common in Japan, Corea, and N. China, especially frequenting market-gardens. It has nothing whatever in common with P. brassica, which I believe does not occur in Eastern Asia, hut is a good local form of rapa, in which the base and all of the fore wing of the female is much suffused with greyish-brown scales, and the second spot of the fore wing of the male shows through the upper surface, as is usual in the typical female. This latter, however, is not a constant character, many males occurring in no way different to the common form, and I took several specimens without any black spots on the fore wing. It is very variable in size. Mr. H. Pryer informs m e that the larvae, which feed on the cultivated Cruciferse, do not differ from the typical forms, nor does the pupa. 16. PIERIS NAPI, Linn. P. melete, Men. Cat. Mus. Petr. ii. p. 113, t. x. figs. 1, 2 (1855). P. aglaope, Motsch. Et. Ent. 1860, p. 28. P. megamera, Butl. Cist. Ent. i. p. 173 (1873). P. castoria, Reak. Proc. Ac. Nat. Sci. Phil. 1866, p. 238. Ganoris dulcinea, Butl. Ann. & Mag. Nat. Hist. ser. 4, xix. p. 96. Common all over Japan and Corea, and extremely variable. It is difficult to get two specimens exactly alike. In Central and Northern Japan napi seems to be the spring form, and there are specimens in Mr. Fenton's collection in no way separable from British examples, and I have all the intermediate forms between napi and melete in my own collection. In Southern Japan the larger and darker forms predominate, and there is less difference between the broods. In Central Japan I took specimens identical with ajaka, Moore, and at Nemoro, a very bleak place in N.E. Yesso, I found forms varying from small melete to typical " castoria." In no single locality, so far as m y experience goes, is any one form constant. 17. PIERIS CANIDIA, Sparrm. P. gliciria, Cram. Pap. Exot. ii. t. 171. P. claripennis, Butl. Ann. & Mag. Nat. Hist. ser. 4, xix. p. 96. P. sordida, Butl. The black spots on the fore wing of this species vary as much as in P. rapa, var. crucivora <$. I took a very large series in Hong- Kong, Foochau, Ningpo, and Gensan, and they varied equally in every locality. The Coreau specimens are usually smaller than Chinese examples. |