BUTTERFLIES OF THE DISTRICT OF COLUMBIA 247 



through a small bit of level land: but B. myrlna here was absent. 

 In a bog at Essex, Mass., fed by a small stream flowing through a 

 wet grassy area bordered by woods and encumbered by brush, B. 

 myrlna is very common, but B. helJona is wholly confined to the wet 

 brush}' hillside above the bog. 



Brent his hellona is to be looked for especially in boggy patches 

 bordering Paint Branch and similar spots in the adjacent portions 

 of Maryland. 



It is easily distinguished from B. mj/rina by having the under- 

 side of the hind wings brownish yellow mottled with purple, and 

 entirely without silver spots. 



PHYCIODES NYCTEIS (Doublcday and Hewitson) 



Plate 15, Figures 3. 4 



This common species should be found, at least casually, in the vicin- 

 ity of the District. It is larger than P. tharos and is most easily dis- 

 tinguished by having the third submarginal spot from the anal angle 

 on the hind wings above with a conspicuous light center — that is, 

 replaced by a thin black ring. 



PHYCIODES CARLOTA (Edwards) 



Plate IS, Figures 3. 4 



It is possible that this Avide-ranging form occurs casually in the 

 District area. 



This species is readily recognized by the deeply scalloped outer 

 border of the dark ground color of the hind wings below, and by 

 the narrow tortuous line of pearly spots crossing the middle of the 

 underside of the hind wings. 



Family RIODINIDAE 



CHARIS BOREALIS (Grote and Robinson) 



Northern Metal :\L\rk 



Plate 28, Figure 9 



This curious little butterfly has a fluttering, though rather fast, 

 flight, which resembles that of a geometrid moth. It alights on the 

 undersides of leaves and twigs with the wings expanded and touch- 

 ing the supporting surface, also like a moth. It is unlikely to be 

 taken in the usual course of butterfly collecting, but may turn up 

 in collections of the smaller moths. It is occasionally taken about 

 lights to which, mothlike, it is attracted at night. 

 06544—32 17 



