56 INfr. Butler's Jirvision of Genera of 



a. a. a. a. Suljcostal iiervulcsof hiudwiugs on a lougfoot.stalk. Lcucidia. 

 ** Upper disco-cellular of t'rontwiiig.s rather shorter than lower. 



3Ictaporia. 

 *** Upper disco-cellular of frontwings more than half the length 

 of lower. 



a. A silky patch, generally hairy, beneath inner margin of 



frontwings in males. , CaUidryas. 



b. No patch of hairs beneath frontwings of males. A)iujnthia. 

 **'* Upper disco-cellular of frontwings half the length of lower. 



a. Second subcostal of frontwings emitted at end of cell. 



Caladida. 

 a.a. Second sul)costal of frontwings emitted before end of cell. 



b. Upper disco-cellular of hindwings one tliird to one fourth 



length of lower. Ixias. 



c. Upper disco-cellular of hindwings half the length of lower. 



Syncldoe. 



d. Up})er disco-c(dlular of hindwings more than half the length 



of lower. Ficris. 

 ***** Upper disco-cellular of frontwings less than half the length 

 of lower. 



a. Antennie moderately roliust with gradually formed club. 



b. Upper disco-cellular of hindwings one iiftli the length of 



lower. Ooneptery.r. 



c. Upper disco-cellular of hindwings less than half the length 



of lower. Kricogonia. 



d. U]iper disco-cellular of hindwings one third the length of 



lower. Meiionostoma. 

 a.a. Antenme long with flattened club. 



b. Palpi rather short, very hairj'. Pontia. 



c. Palpi very long, hairy beneath. TatochUa. 



****** Ujiper disco-cellular of frontwings one tliird the length of 

 lower. 



a. Second subcostal nervule of frontwings emitted at or after 



the end of cell. Colias. 

 a.a. Second subcostal nervule of frontwings emitted before end of 

 cell. 



b. Median branches of frontwings at nearly ei^ual distances 



apart. Lcptoplwhia. 



c. Second and third median branches of frontwings near to- 



gether. Dcrcas. 

 "***'■*'" Upper disco-cellular of frontwings about one sixth the 

 length of lower. Herpocnia. 

 C. Two discoidal nervures in frontwings ; lirst discoidal nervurc of front- 

 wings not uniting with subcostal, but emitted at end of cell. 

 * Upper disco-cellular of frontwings scarcely longer than 



lower. Eudiclra. 

 ** Upper disco-cellular of frontwings rather shorter than lower. 



a. Upper disco-cellular of hindwings reduced to a point. 



Teracolus. 



b. Upper disco-cellular of hindwings about half the length of 



lower. Uchomoia. 



