No. 2307. NEW SPECIES OF LEPID0PTERA—8CHAUS. 109 



Family PAPILIONIDAE. 

 Subfamily PiERlNAE. 

 PRESTONIA, new genus. 



Female. — ^Antennae slender, the tip thickened and slightly hooked. 

 Palpi upturned to frons, the third joint very short, conical, and 

 well scaled. Fore wings broad, the costa arched, the apex almost 

 round; neuration as in Callidryas. Hind wings with the outer 

 margin and anal angle evenly rounded; the discocellular differs from 

 Callidryas in being incurved, almost inangled. 



Type of genus. — Prestonia clarhi, new species. 



PRESTONIA CLARKI, new species. 



Female. — ^Thorax black with yellow hairs. Abdomen yellow 

 Wings yellow. Fore wings: clusters of fuscous scaling on inter- 

 spaces of outer margm from above vein 2 to costal vein. Hind 

 wings: the outer margin from costa to vein 2 broadly orange. Fore 

 wings below: orange shading in cell and on termen where the dark 

 scaling is reduced. Hind wings below: a round purple brown spot on 

 discocellular and a smaller spot above vein 5; a postmedial dark 

 spot on costa; subterminal spots on interspaces above vein 4 

 suffusing with marginal large reddish purple spots, which are not 

 clearly defined. 



Expanse. — 62 mm. 



Hahitat. — Mazatlan, Mexico. 



Type.— Cat. No. 22397, U.S.N.M. 



I take great pleasure in naming this new genus and interesting 

 species after my friend, Mr. B. Preston Clark. 



PIERIS KUSCHEI, new species. 



Male. — Palpi fringed with white. Head and thorax black with 

 white hairs. Abdomen whitish with some dorsal fuscous shading. 

 Wings white. Fore wings: costal margin tinged with ocher at base; 

 medially broad streaks of heavy white scaling edging submedian, 

 also veins 2, 3, and lower side of vein 4; a large black spot at end 

 of cell; some black scaling postmedially on either side of vein 4 and 

 above vein 3 ; terminal black spots on veins increasing in size toward 

 apex where the costa is narrowly edged with black. Hind wings: 

 a fine short black streak on upper part of discocellular. Fore wing 

 below: the apex tinged with dull bone color, the spots as above, 

 more pronounced; a postmedial black spot below vein 3. Hind 

 wings below whitish bone color; the discocellular line thicker; 

 some fuscous scaling beyond lower end of cell; costa finely orange. 

 Female above similar to male, the spots rather more conspicuous; 

 a postmedial black spot at vein 3 ; the heavy white edging to veins 



