EASTERN UNITED STATES. 71 



116. 

 Under side of hind wings with a border of metallic spots, 



Lycaena Scuddeni, (122) 



117 

 Under side without metallic spots, 



117. 



Under side dark gray, Lyc^na Lygdamus, (121) 



Under side pale bluish gray, Lycaena Pseudargiolus, {US) 



118. 

 Upper surface black, . /ioq\ 



Lycaena Pseudargiolus, var. Violacea, 5 {i^6) 

 Upper side brown, under side brown, with numerous white ^^^ 

 bands, 



119. 

 Six subterminal round black spots on under side of hind wings, 



Lycaena Isophthalma, (126) 

 Seven subterminal round black spots on under side of hind 



wings, Lycaena Exilis, (127) 



120. 

 Knob of antennse thick, ovoid, or elongate ovoid, 121 



Knob of antennae spindle-shaped, 



121. 



Knob of antennae without a hook or bent projection at the end, 122 

 Knob of antennse ending in a hook or bent projection, 126 



122. 



19q 



Knob blunt, conical, without a spme, 



Knob elongate or ovoid, rounded at the tip, straight or a little 



semilunar; somewhat compressed, Pyrgus, 125 



Knob rounded ; the last joint ending in a short, slender spine ; 

 fore wings brown washed with yellow ; hind wmgs yel- 

 low, with brown border, Ancyloxypha Numitor, (132) 



123. 

 Third joint of palpi concealed by hair of second ; abdomen 

 much longer than hind wings; brown, with fulvous yel- 

 low spots, Carterocephala, 124 

 Third joint of palpi free ; abdomen but little if any longer than 

 hind wings ; brown ; costal edge yellow, 



Thymelicus Poweshiek, (133) 



