NYMPHALID^E. 



275 



mottled with gray and dark brown, the brown in some specimens 

 assuming distinct irregular bands, while in others the Avhole under 

 sui-face is a plain grayish brown, often liaving a piidvish tinge. 



Grapta comma. 



These differences are well shown in the accompanying figures. The 

 silvery spot is usually in the shape of a ratlier sprawling G. In the 

 other form the upper wings are yellowisli tan, while the lower wings 

 are dark^brovvn, showing very few spots. The under side usuallj^ is 



Grapta comma. Under side. 



mucli lighter than in the lirst described form. These two varieties 

 are not equally abundant, the last described form, in tliose I have 

 collected, being in the ratio of about one to six to the former. 



