72 THE COMMONER BUTTERFLIES. 



nate. The chrysalis haugs for an uncertain period, gener- 

 ally from six to thirteen days, sometimes prolonged to a 

 month. The butterfly flies slowly and for short distances 

 only ; it is everywhere abundant in open places and is 

 single- or double-brooded according to locality, triple- or 

 even quadruple-brooded further south. In New England 

 it is double-brooded, the first brood appearing in the latter 

 half of May and flying until the end of the first week in 

 July ; the second brood appears about the middle of July 

 and may be found even to October, there being great irreg- 

 ularity in the development of different caterpillars, among 

 which there is sometimes a certain amount of temporary 

 lethargy. The full accounts of the behavior of the cater- 

 pillars of this species given by Mr. W. H. Edwards are 

 well worthy of close attention. The species is dimorphic, 

 the butterflies of the first brood (wdierever there are more 

 than two) differing from those of the later in having more 

 accentuated markings. 



A second species of this genus, P. batesii, has been taken sparingly 

 east of the Appalachians ; and a third, P. gorgone, an extreme south- 

 ern species, has been recorded from Kansas. 



TRIBE FKITILLARIES. 



6, Genus Bkenthts. 



BRENTHIS BELLONA— THE MEADOW FRITILLARY. 



(Argyunis bellona.) 



Butterfly.— Upper surface of wings fulvous, heavily marked 

 with black ; on most of the basal half or more, bounded by an 

 augulate dentate outer line, the black predominates, touclied wiMi 

 fulvous dashes ; outer margin bordered with black reduced to 

 small T-shaped spots on the hind wings, preceded by two rows 

 of spots, the inner circular and crossing the middle of the fulvous 

 field. On the under side the fore wings are fulvous heavily blotched 

 with black excepting on the outer fourth, where there are cinna- 

 moneous clouds ; hind wings cinuamoneous fulvous on the basal 



