GENUS CALLIDRYAS 113 



a dimorphic female of Pima, to which group it evidently belongs. 

 But I now conclude that it is a new species, and publish it as such, 

 under the name Caliente, because of the torrid desert which is its 

 home. 



In the shape of the wings Caliente differs from Pima ; all the 

 wings are moderately yellow ; and the marbling of the under side 

 is more bronzy and of different pattern, but I do not see fit to 

 break off the wings of one side in order to show the underside, 

 as in this case it is of but secondary importance, as the pattern of 

 ornamentation of upperside is sufficiently distinctive. 



Like all other desert Anthocharis, Caliente is of extremely rapid 

 flight, and it was only after a desperate chase that I at length 

 succeeded in capturing it. 



Genus CALLIDRYAS. 



All the species of this genus are of moderate size, and all of 

 them are yellow, greenish-yellow, or orange-colored, and are with- 

 out prominent markings. Only one species is found on the West 

 Coast. 



Sex-marks : The claspers, as in Papilio. 



The larvae are citron-yellow, with black dots, and a blue line on 

 each segment. 



Food-plant : Cassia. 



71. Callidryas Eubule. 



Plate IX ; Figures 71, Male ; b, Male, underside. 

 This butterfly inhabits in vast numbers the Eastern States to the 

 Mississippi River, extending south to tropical countries, but on 

 the West Coast it is but scantily represented, being seen only in a 

 few places in the southern part of the State of California ; in fact, 

 I have seen more of them flying in the streets of Los Angeles than 

 everywhere else altogether. I suppose that there is some cassia 

 plant cultivated in the gardens there that affords them a larval 

 food-plant, as cassia alone is used by Callidryas caterpillars. The 

 wild plants of cassia are not represented at all in California, except 

 in one place in the Mojave Desert, and consequently there is no 

 wild plant for them to feed upon, and they are barred from the 

 State, except for the possible cultivated garden plant. 



