Siih-F(i iiiiiii Fierina'. .■'57 



character by which to separate any one groii]) of this as- 

 semblage from another. 



GENUS 27. IXIAS. Hiibncr. 



Verz. bek. Schmett., i). 1»:.. H-SIO). 

 Thcstias, ]-joisd. 



GENUS 28. HEBOMOIA. Hilhncr. 



Verz. bek. Schraett., p. 95 (1816). 

 Iphias, Boisd. ; Pier is, Latr. 



GENUS 29. HELIOCHROMA. Butler. 

 Cist. Ent., p. 15. (1869.) 



GENUS 30. PIERIS. Boisduval. 



Sp. Gen.. Lep., p. 434 (1836). 



PerrJiyhris, Hlibn. ; Picris and Eronia (part) auct. 



The type of Picris, Schrank, was Parnassius A'pollo, that 

 of Latreille and Godart was Rehomoia Leitcipye, but since 

 Me ought to have a genus Picris in the Picrincv, I adopt 

 that of Boisduval, the type of which is a white buttertly 

 from Tropical America and unfortunately not congeneric 

 witli the white European species. 



GENUS 31. APPIAS. Hiibacr. 



Verz. bek. Schmett., p. 91 (1816) 

 Catophcigct, Hlibn. ; Tacliyris, Wallace. 



GENUS 32. PHRISSURA. Butler. 



At once distinguishable from Appias by the rounded 

 form of the wings and different form of the disco-cellulars 

 of frontwings. 



GENUS 33. DAPTONOURA. Butler. 



Cat. Eabr. Diurn. Lepid., ]>. 1'09 (1869). 



Some of the species of this genus bear a general resem- 

 blance to males of Ap)pias, as for instance D. Isanclra to 

 A. Dnisilla, $, the position of the upper disco-cellular of the 

 frontwings however will at once separate them. 



GENUS 34. BELENOIS. Wlbna: 



Verz. bek. Schmett. p. 92 (1816). 

 A7ina2)hc€is, Hiilju. ; Pinacoptcryx, Wllgr. 

 Includes the Scvcriiia and Ccilypso groups. 



