PIERIN^. 147 



pale yellow. Both wings similar marked as in Butleri, the markings being com- 

 paratively broader. Underside similar to the male. Expanse, (? 1 14) to 2 inches, 

 ? Ih) inch. Habitat. Nian-Chan, Koko Nor, W. China. 



Genus Mesapia, Gray, List. Lep. Ins. Brit. Mus. i. p. 92 (1856). Kirby, Catal. 

 D. Lep. p. 610 (1871) ; id. Allen's Nat. Libr. Butt. ii. p. 154 (1896). Schatz, Bxot. 

 Schmett. ii. p. 59 (1886). Leech, Butt, of China, ii. p. 659 (1894). — Mesapia Peloria 

 (Pieris Peloria, Hewitson, Exot. Butt. i. pi. 2, fig. 15, 16 (1853). Kirby, Entom. 

 1894, p. 101 ; id. Allen's Nat. Libr. Butt. ii. p. 165 (1896). Leech, Butt, of China, 

 ii. p. 669 (1894). Jordan, Nov. Zool. v. p. 381 (1898). Aporia Peloria, Fixsen, 

 Rom. Mem. Lep. v. p. 97 (1889). 8i/n. Aporia Lama, Alpheraky, Rom. Mem. Lep. 

 ii. p. 404 (1887). Habitat. N.E. Tibet. 



Genus Davidina, Oberthur, Etudes Eut. iv. pp. 19, 108 (1878). Schatz, Exot. 

 Schmett. ii. p. 59 (1886). Leech, Butt, of China, ii. p. 474 (1894). Kirby, Allen's 

 Nat. Libr. Butt. ii. p. 156 (1896). — Davidina Armandi, Oberthur, I.e. pp. 19, 108, 

 pi. 2, fig. 1 (1878-9). Leech, I.e. p. 474, pi. 33, fig. 9, <? (1893). Kirby, I.e. p. 157 

 (1896). Habitat. Central China. 



Genus PIERIS. 



Heliconius, Barbufc, Gen. Ins. Linne, p. 109 (1781). neo Linnajus. 



Pieris (sect. 3, pt.), Schrank, Fauna Boica, ii. 1, pp. 152, IGO (1801). 



Fieris (pt.), Latreille, Sonn. Euff. xiv. p. Ill (1805); id. Gen. Or. et Ins. iv. p. 203 (IS09). 



Lamarck, Hist. Nat. Anim. iv. p. 30 (1816). Boisduval, Spec. Gen. Lep. i. p. 434 (1836). 



Doubleday and Hewitson, Gen. D. Lep. i. p. 42 (1847). 

 Piais, Jermyn, Butt. Coll. Vade Mecum, pp. 43, 66 (1824). Stephens, Illust. Brit. Ent. Haust. i. 



p. 25 (1827). Curtis, Brit. Ent. pi. 360 (1831). Rennie, Consp. p. 5 (1832). Westwood, 



lutr. Class. Ins. ii. Gen. Syn. p. 87 (1840). 

 Ajjoria, Hiibner, Verz. bek. Schmett. p. 90 (1816). Stephens, Catal. Brit. Lep. B. M. p. 3 (1850). 



Stainton, Manual Brit. Butt. i. p. 17(1857). Kirby, Eur. Butt. p. 8(1863); *U Allen's Nat. 



Libr. Butt. ii. p. 139 (1896). Schatz, Exot. Schmett. ii. p. 60 (1886). Scudder, Proc. Amer. 



Acad. A. and Sci. 1875, p. 116. Tult, Brit. Butt. p. 225 (1896). Grote, Proc. Amer. Pliil. Soc. 



1900, p. 26. 

 Ganoris (pt.), Dalm. Vet. Akad. Haoidl. 1816, pp. 61, 86. 

 Pontia (pt.), Samouelle, Ent. U. Comp. p. 236 (1819). 

 Leuconea, Donzel, Ann. Soc. Ent. Fr. vi. p. 80 (1837). Duponchel, Catal. Meth. Lep. Eur. p. 24 



(1844). Rambur, Catal. Lop. Andal. p. 54 (1858). 

 Pontia, Butler, Cistula Entom. i. pp. 38, 50 (1870) ; id. Proc. Zool. Soc. 1872, p. 58. 



Imago. — AVings uniformly covered with very minute closely-adpressed scales ; 

 almost subdiaphanous ; cilia almost obsolete. Forewing elongated, triangulate, 

 apex and posterior angle rounded, exterior margin slightly oblique ; subcostal vein 

 four branched, first branch free and emitted at about one-fifth before end of the 



u 2 



