172 GROTE .t KOBINSON. 



formed as is usual. A subterniiiial bluish-wliite line, forniirip; promi- 

 nent lunules on the interspaces interiorly, edged outwardly with black ; 

 along anal angle the black scales are followed by a fulvous streak, this 

 by first white then black scales. Outside of the black scales edging 

 the subterminal line on the next interspace above, is a patch of pow- 

 dery blue scattered scales extending to the external margin ; on the 

 interspace above is a distinct fulvous crescent, succeeded by black 

 scales on the margin; the fulvous scales are faintly continued on the 

 uext succeeding interspace, which also shows a few scattered bluish- 

 white scales. A narrow white line lies directly on the margin. 



Expanse, 1.20 inch. Length ofhocli/^ 0.60 inch. 



ITahitat. — Atlantic District. (Virginia !) 



We have two individuals before us, apparently both males, and dif- 

 fering slightly from one another as noticed, and in that the sexual dis- 

 cal spot of the primaries is darker than the ground color of the wing- 

 in one specimen, which at first we regarded as the female. Both agree 

 in having the common internal line of dark blue atoms, a character 

 which separates this specias at once from T. falacer, Godt. sp., and T. 

 aeadiea, Edwdx.^ its near allies. 



From Thecla CALANUS, Wcstv-nod^ (^RuMlcus armafna Cidaims^ 

 Hiibn., Sml., Thecla Edivarddi, \. Saund ,) this species is equally dis- 

 tinct. Contrary to Boisduval and LeConte, who cite ■' PapKio ralamis. 

 Hiibn.," as a synomym of T. falacer, Godt., sp., and to Westwood. 

 who gives precedence to Htibner's name, it seems to us that T. calanus 

 and T. falacer are distinct species, the former to be distinguished by 

 its slightly greater expanse, its paler more brownish color above, and 

 by the fulvous marks of the upper surface of secondaries near anal an- 

 gle. The I'emark : "quelquefois precedee en dedans d'une tache fauve 

 peu marquee," Boisd. and Jjec, p. 92, would then refer to specimens 

 of T. calanus, erroneously regarded by these Authors as identical with 

 T. falacer. '^T. calanmi" is so referred to by Dr. Morris in the "Sy- 

 nopsis," (p. 95), although still regarded as a synonym of T. falacer. 

 In Canada and the New Kngland States, T. falacer and T. acadica 

 seem to appear together. I'hc latter species is not cited by Mr. Scud- 

 der, in his very useful Pamphlet on the Butterflies of New Kiigiand, 

 but judging by specimens from Cape Cod, which we owe to his kind- 

 ness, it is probably regarded as a form of Oodart's species. It may be 

 quickly separated from T. falacer, by the extra discal band of the pri- 

 maries beneath being composed of a series of rounded, discontinued, 

 dark or black spots, annulate with white. In T. falacer, as in T. calanus 



