GO TUB BUTTERFLIES OF THE 



Antenna) insensibly terminating in a club, truncate at the end, 



Callidryas, 23 

 Antenna terminating in an obconic club, 20 



23. 

 Color above, lemon-yellow or dirty yellowish white ; beneath, 



lemon-yellow, with or without orange tint, 24 



Color above, orange or whitish orange, 26 



24. . 



Clear lemon-yellow above and below, with slight greenish tint; 

 female with discal dot and terminal row of spots, 



Callidryas Eubule, (18) 



Color above, lemon-yellow, or dirty whitish yellow; beneath, 

 orange-tinted ; female with discal dot on fore wings and 

 terminal border, Callidryas Sennae, (19) 



25. 

 Color light orange with reddish-orange spots, 



Callidryas Philea, (20) 



Color light orange or orange-tinted white ; orange-tinted be- 

 neath ; subterminal band on under side of fore wings 

 straight, Callidryas Agarithe, (21) 



26. 

 Hind wings with an orange discal spot ; both wings with black 



border, Colias, 27 



Hind wings without discal spot, 30 



27. 



Ground color yellow, 28 



Ground color orange, or at least an orange patch in the middle 



of fore wings, Colias Eurytheme, (24) 



28. 

 Fore wings black at base, the yellow making a " dog's head," 



with the discal dot for an eye, Colias Caesonia, (23) 



Fore wings without black at base, 29 



Under side with a submarginal row of dark points, 



Colias Philodice, (25) 



