400 



7 'HE STUDY OF INSECTS. 



The Great Spangled Fritillary, Argynnis cybele (Ar-gyn'- 

 nis cyb'e-le). This species (Fig. 471) will serve to illustrate 



FIG. 471. Argynnis cybele. 



the appearance of the larger members of this group, those 

 belonging to the genus Argynnis. In this genus vein III, 

 of the fore wings arises before the apex of the discal cell. 



There are a number of common fritillaries which resem- 

 ble the preceding in color and markings but which are much 

 smaller, the wings expanding considerably less than two 

 inches. These belong to the genus Brenthis (Bren'this). In 

 this genus vein III, of the fore wings arises beyond the apex 

 of the discal cell. 



The Variegated Fritillary, Euptoieta claudia (Eup-toi-e'ta 

 clau'di-a). This butterfly agrees with the smaller fritillaries 



(Brenthis) in the origin 

 of vein III, of the fore 

 wing beyond the apex 

 of the discal cell, but 

 differs from them in the 

 shape of the fore wing, 

 the apex of which is 

 much more produced 

 (Fig. 472), and the outer 



margin, except at the apex, concave ; it is also considerably 

 larger. 



This species occurs throughout the United States east of 



