NORTH AMERICAN LEPIDOPTERA. 327 



The genitalia of the male are somewhat peculiar. The harpes are 

 subequal, slightly curved, the tip truncate, the superior angle blunt. 

 The corneous clasper arising rather beyond the middle from the 

 thickened inferior margin is straight to near the tip, where it ab- 

 ruptly terminates in a very small, curved, acute corneous point, 

 differing thus essentially from the other species in this section. 



The species seems locally not uncommon. 



Group FASCIATUS. 



The salient feature of this group is found in the maculation of the 

 secondaries which are fasciate, instead of merely with an indefinite 

 outer band. Here the base is smoky, limited by a black band, be- 

 yond this a white band extends to the broadly black margin. 



The two species referred to here are very different in appearance 

 and in size. The typical species — fasciatus — is larger, heavier, dull 

 fuscous gray in color, easily recognized by a white shade beyond the 

 t. p. line, which, joining the central white band of secondaries in the 

 spread insect, gives the appearance of a common white band. 



Tenuifascia, as its name suggests, has the white band of secondaries 

 very narrow. The species is much smaller, the wings comparatively 

 shorter and broader than in the other species of the genus. Both 

 species are based on single specimens, in each case a female. The 

 discovery of the male and the form of the genitalia as compared 

 with the other species will be interesting. 



O. faseialiis Smith, Insect Life 18S8, i, 18. 



Head, thorax and primaries dull fuscous gray. Primaries with basal line sin- 

 gle, distinct, black. Basal space to t. a. line paler, more ashen gray. T. a. line 

 rather broad, single, black, outwardly oblique, making two large and not very 

 prominent outward curves. T. p. line single, marked at costa, making a strong 

 outward curve over reuiform, then strongly incurved, interrupted by the white 

 transverse band, again distinct below the reniform and with a slight inward 

 curve to the inner margin. Claviforn) wanting. Orbicular rather small, round, 

 narrowly outlined in black, somewhat paler than ground color. Eeniform large 

 not very well defined, white, with a narrow fuscous crescent. Between reniform 

 and t. p. line the ground color obtains and gives a deceptive appearance of the 

 reniform in the broad white band. A narrow shade band crosses the outer part 

 of median space, distinct and blackish on co.sta, less marked below. A broad, 

 white, transverse shade over and including reniform, leaving a fuscous spot be- 

 yond reniform, limited inwardly by the t. p. line and almost extending to the 

 s. t. line. S. t. line marked only by a series of sagittate bla(^k dashes shading 

 off into the white band. Terminal space concolorous ; a narrow teimlnal dark 

 line. Fringes concolorous fuscous, narrowly cut with darker brown, a whitish 



