HESPEKIOIDEA OF AMERICA 53 



names may apply to the same thing, but in that ease caUidus has priority. 

 The genitalia resemble those of pacuiius. California, June and July. 



8. T'HAXAOS MARTIALIS 

 Nisonicdes martialis Scudder, Trans. Chi. Acad. ScL i, 335, 1869. 

 Scudder, Butt. New Eng. n, 1493, 1889. 



Holland, Butterfly Book 335, pi. XLvni, f. 4, 1898. 



New York, west to Colorado and north into Canada ; May, July, August. 



Dr. Forbes teUs me that eastern specimens of this species have a brassy 

 lustre, but aU which I have seen from the middle west were decidedly pur- 

 plish. The unusually bright, contrasting pattern is the most reliable char- 

 acteristic. 



ab. AUSOXirS 

 Nisoniades aiisonius Lint., 23rd Eep. N. Y. St. Cab. Nat. Hist. 166, pi. 7, 



ff, 11, 12, 1872. 

 Scudder, Butt. New Eng. u, 1498, 1889. 



Aiisoniu^ lacks the subapical hyaline spots and has the transverse series 

 of dark dashes unusually prominent. It was described from a single speci- 

 men taken at Center, N. Y., on May 12, 1871, and has never been taken 

 sinee. 



9. THANAOS JUVENALIS 



Hesperm juvenalis Fab., Ent. Syst. ni, (i), 339, 1793. 

 Nisoniades juvenis Hbn., Verz. bek. Schmett. 108, 1820. 

 Nisoniades costalis "Westw. & Hew., Gen. Diurn. Lep. ii, 519, pi. 79, f. 3, 



1852. 

 Nisoniades ennius Scud. & Burg., Proc. Bost. Soc. Nat. Hist, xm, 296, f. 



9, 1870. 

 Scudder, Butt. New Eng. ii, 1476, 1889. 

 Holland, Butterfly Book 335, pL xlviii, f. 11, 1898. 



Wright, Butt. W. Coast 252, pi. xxxii, 462 9, 469 5 (not $ tristis), 1905. 

 Atlantic coast to Eockies, Gulf to Northern Canada; May to August. 



10. THANAOS PROPERTirS 



Nisoniades propertius Scud. & Burg., Proc. Bost. Soc. Nat. Hist, xm, 298, 



f. 11, 1870. 

 Nisoniades tibuUus Scud. & Burg., op. cit., p. 299, f. 12. 

 Wright, Butt. W. Coast 252, pi. xxxn, f. 463, 1905. 



Texas, Arizona, California and north into Canada; June, July and Au- 

 gust. The abundance of hairy gray vestiture in specimens which have not 

 been badly rubbed is very characteristic. 



10a. race BOEEALIS 

 Than^os propertius, var. torealis Cary, Proc. U. S. N. M. xxxi, 455, 1906. 

 Type one male from North Nahanni Kiver, Mackenzie, June 4, 1904, Ap- 

 parently this is a dark race with the pale maculation greatly reduced. 



