NATURAL SCIENCES OF PHILADELPHIA. 211 



three American species of Calocampa appear to me easily separa- 

 ble from the two European. The species had very probably a 

 common tertiary origin, and the question of one species " repre- 

 senting" another has probably no proper basis in fact. At any 

 rate, we must agree with Mr. Lintner that tlie American G. mipera 

 does not "represent" the European C. vetusta, and the comparison 

 between tlie species on page 195, of a^oI. ii. Bull. B. S. N. S., must 

 be omitted. 



The inquiry as to what species irom America Mr. Walker has 

 regarded as the same as C. vetnsta^ seems to me entirely barren. 

 The European species was included in the "List of N. Am. Noc- 

 tuidai" upon Mr. Walker's authority, and whenever a European 

 species is cited in that list, it is understood to he on the authority 

 cited after the original description. Where no other than the 

 original description is given (as for instance Agrotia baga, p. 2) 

 the Author of the "List" assumes the responsibility. 

 Pyrrhia illiterata, n. s. 



9. Tlie moth agrees with Pijrrhia in the unarmed fore tibire, 

 and the sharp tuft behind the collar. It differs greatly in the 

 appearance of the ordinary lines from our hitherto described spe- 

 cies ea:p7'imens and angulata. Entirely reddish orange, tiie collar 

 and tegalse faintly margined witli fuscous. Primaries with the 

 transverse lines narrow, undulate, denticulate, the t. a. and t. p. 

 lines tending to be accented b}' interspaceal points. Tlie lines are 

 fuscous or blackish, unaccompanied by any shades. Ordinary 

 spots like the lines, incompletely outlined, concolorous, the orbi- 

 cular spherical, moderate. Sub-terminal line indicated by dots, 

 with a preceding dark costal shade and a shade spot opposite the 

 cell. Hind wings stained with red, with a narrow fuscous subter- 

 minal shading, like that of Heliothii^^ but less prominent. Beneath 

 with a common continued fuscous exterior line becoming obliterate 

 on the hind wings inferiorly. Discal marks on primaries, but none 

 on secondaries. 



ExpoMse 32 mm. Hahitat. Mendota, 111., from Prof. C. Y. 

 Riley. Taken in August, 18T2. Mass., from Mr. Thaxter. 



The moth has some resemblance to Xanthia. The clypeus is, 

 however, fuller, and the habitus more that of the genus to wliich I 

 have referred it. 



