124 LEPIDOPTERA INBICA. 



most species there are not only two very distinct-looking forms "whicli represent the 

 extremes of the two seasonal races, and which prevail in the rainy and dry-seasons 

 respectively, but also numerous intermediates linking these extremes together, many 

 of these intermediates having received names. A further point to be noticed is that 

 these forms themselves vary according to the vegetation and rainfall, so that the 

 extreme of the rainy-season form from a district where the rainfall is great and the 

 vegetation dense, is much more pronounced than the extreme of the rainy-season 

 form from a district with slight rainfall and sparse vegetation ; and these differences 

 are even more marked in the dry-season forms ; while in all genera the dry-season 

 forms are, as a rule, smaller than the rainy-season forms." 



Sub-family PIERINiE. 



Pieridi (pt.), Stephens, Catal. Brit. Lep. B. M. p. 3 (ISoO). Stainton, Manual Brit. Lep. i. p. 15 



(1857). 

 Pierinw (Div. 1 ; et 2 pt.), Butler, Cistula Ent. i. p. 55 (1870). 

 Pieridce, Scbatz, Exot. Schmett. ii. p. 58 (1886). 

 Pieridi, Scudder, Butt. U.S. ii. p. 1154 (1889). 

 Pienna, Kirby, Allen's Nat. Libr. Butt. ii. p. 139 (1896). 

 PierincB (Tribe Apmidi et Pieridi) Tutt, Brit. Butt. pp. 86, 225-9 (1896). 

 Pierinw (pt.), Jordan, Nov. Zool. v. p. 381 (1898). 

 Pieridini (pt.), Grote, Proc. Amer. Phil. Soc. 1900, p. 20. 

 Voraeia, Hiibner, Verz. bek. Schmett. p. 90 (1816). 



Characters of the Pierin.^. 



Imago. — Foreiving with the subcostal vein either three or foiir branched ; the 

 first branch and usually also the second is emitted before the end of the cell ; the 

 second being either single or rarely bifid, and the third most generally bifid ; the 

 upper radial veinlet most generally emitted beyond the end of the cell, and the 

 lower radial only starting from the discocellulars ; in Baltia both radials start from 

 the subcostal beyond the cell. 



Genus DANAUS. 



Banaus {Danai Candidi), Linnaeus, Syst. Nat. x. ed. pp. 467-470 (1758) ; id. xii. ed. i. 2, pp. 758-765 



(1767). 

 Danaus, Esper, Die Schraett. i. p. 51 (1777). Cederheini, Faun. Ingricse Prod. p. 206 (1798). 



Panzer, Faun. Ins. Germ. Hefte, 84, Index, p. xi. (1801). Oken, Lehrb. i. p. 723 (1815). 



Crotch, Cistula Entom. i. p. 60 (1870). 

 Pieris (sect. 3 pt.), Schrank, Fauna Eoica, iii. i. p. 160 (1801). 

 PI'ris (pt.), Latrcille, Sonn. Buff. xiv. p. Ill (1805) ; id. Gen. Cr. et Ins. iv. p. 203 (1809). Lamai-ck, 



Hist. Nat. Anim. iv. p. 30 (ISIG). Boisduval, Spec. Gen. Lep. i. p. 437 (1836). Doubleday 



