EASTERN UNITED STATES. 177 



or less complete bands of pale spots edged with brown ; 

 the row of black spots the same as above ; a submarginal 

 row of lunules, the middle large, silvery, the others more 

 or less obscure. The summer form is pale buff, with 

 irregular transverse brown lines, the brown dots smaller, 

 a terminal brown border accompanying the submarginal 

 row of lunules and partly obscuring three of them, a 

 small brown patch on the costa and sometimes a little in 

 the centre. 



Gulf States, Texas ; occasional in Kansas. 



52. Phyciodes Tharos, Drury. 



Expanse of wings from 1.15 to 1.5 inches. 



There are two dimorphic forms of this species, the 

 winter form, Marcla, and the summer form, Morpheus. 

 It was supposed that these two forms were distinct species 

 till Mr. W. H. Edwards proved by rearing them that 

 they are seasonal forms of one species, the difference in 

 coloration being due to the effects of cold while hiber- 

 nating. Besides these two well-marked forms there are 

 several minor variations, only one of which is named. 



Winter form, Maecia, Edw. — This has the upper 

 surface reddish fulvous marked with black. There are 

 two rows of more or less distinct coalescing circles near 

 the base of the wing, the first of two circles, the second 

 of four, and an ellipsoid at the end of the cell ; a patch 

 of black beyond the cell on the costa and one on the 

 hind margin, sometimes the two being connected by a 

 dentate line. The outer border is broad, black, and 

 through it runs a crenated line with a yellowish or ful- 

 vous lunule in the middle, in some examples distinct, in 

 others connected with the central color ; a black dot near 



