170 THE COMMONER BUTTERFLIES. 



57. Genus Anthomaster. 



ANTHOMASTER LEONARDUS— LEONARD'S HESPERID. 



(Pampliila leonardus.) 



Butterfly. — Upper surface of wings dark brown, the fore wings 

 with an extramesial series of tawny spots, all but the uppermost 

 large ; discal dash of male black, largest and arcuate at base, 

 very long and slender ; hind wings with a moderately broad ex- 

 tramesial pale tawny band, crossed by dark nervures. Under 

 surface cinnamoneous, the markings of the upper side repeated 

 but paler, on the hind wings white and the band narrowed, 

 lengthened, and more definite. Expanse more than 1| inches. 



Caterpillar. — Head black. Body naked, briefly pilose, pale 

 green dotted with black, the thoracic shield fuscous with black 

 margins (immature ; full-grown caterpillar unknown). 



Chrysalis. — Unknown. 



Found throughout most or all of our district in open 

 country, but unrecorded from Minnesota and Wisconsin, 

 eastern Maine and eastward. It hibernates as a partly-grown 

 caterpillar, possibly before moulting, and is single-brooded, 

 flying at the end of August and in September. The eggs, 

 which are high hemispherical, smooth and white, are laid 

 upon the blades of the food-plant singly and hatch in from 

 fifteen to twenty days. The caterpillar feeds upon Agrostis 

 and doubtless other grasses, wandering about the blades in 

 the autumn and constructing then no nest of any kind. 



58. Genus Polites. 



POLITES PECKIUS— THE YELLOW-SPOT. 



(Pamphila peckius, Hesperia wamsutta.) 



Butterfly. — Upper surface of wings dark brown, marked with 

 tawny in an extramesial series of elongate spots, reduced to dots 

 and removed outwardly beyond the cell of the fore wings, and 

 crossing but half of the hind wings ; discal dash of male velvety 

 black, sinuous and interrupted before the middle. Under surface 

 cinnamoneous, the markings of the fore wings repeated in yellow, 

 on the hind wings consisting of a very large and very irregular 



