826 JOHN B. SMITH. 



liy a broader pale ring, the centre red-browu or fuscous. Beyond the reniform 

 to the t. p. line is a characteristic pale shade. The s. t. space darkens somewhat 

 to the very irregular, powdery white s. t. line, which is preceded by a series of 

 black, sagittate interspaceal dashes. Beyond the s. t. line the narrow terminal 

 space is more or less powdery to the narrow blackish terminal line. Fringes 

 long, pale, cut with fuscous, a fuscous line at base. Secondaries yellow, with a 

 broad black outer margin. Beneath yellow, with broad black marginal band. 

 Primaries paler, the extreme outer margin with white powderings. Head and 

 thorax concolorous with primaries, head with crest between antennae dusky; 

 collar with a black and pale central line and pale tipped. The patagiie are also 

 more or less black powdered. Abdomen dull blackish gray. Expands 1.00 — 1.16 

 inches ; 25 — 29 mm. 



Hah. — Colorado. 



The specimens vary quite considerably in brilliancy and details of 

 maculation, the species still retaining its distinctive appearance how- 

 ever. Its peculiarities are elsewhere pointed out. 



The genitalia of the male are well marked : the harpes are toler- 

 ably equal to near tip then obliquely rounded above, forming a 

 rather acute angle inferiorly, the clasper corneous, stout at base, 

 tapering rather suddenly to an acute point and inserted at lower 

 margin rather close to tip. 



The species seems not common. 



O. iiiirificalis Grt., Bull. Surv. 5, 207. 



Head, thorax and primaries dull fuscous brown. Primaries with basal line 

 wanting. T. a. line marked only on costa, extending obliquely outward and not 

 traceable below the median vein ; a narrow, longitudinal black line from base to 

 the narrow, loop-like claviform, which is defined by a narrow black line and a 

 somewhat broader whitish interior ring ; centrally it is concolorous with the 

 primaries. The t. p. line is rather indistinct, single, broadly curved over the 

 cell and incurved below the median vein. The orbicular is elongate oval, nar- 

 rowly black ringed then with a broader white ring, the centre dusky. Reniform 

 narrow, small, upright, neatly defined with black and white rings leaving a nar- 

 row, central, fuscous line. A broad black dash connects the two spots. Beyond 

 the t. p. line and forming its outer margin is a rather broad, pale, or whitish 

 shade, variably distinct, from which the s. t. space becomes darker to the very 

 irregular, narrow whitish s. t. line. This line is preceded by a series of more or 

 less distinct sagittate black dashes and followed by a more indistinct series of 

 black dots, sometimes not easily visible in the dark terminal space. A dusky 

 terminal line. Fringes fuscous, cut with darker brown, a pale line at base. 

 Secondaries yellow, with a broad black outer margin. Beneath all wings yellow, 

 with broad black outer margin. Collar with a black transverse line inferiorly. 

 Abdomen yellowish fuscous. Expands 1 — 1.12 inches; 25 — 28 mm. 



Hah. — Nevada, California (Nevada County, September). 

 Easily I'ecognizable by the form of the ordinary spots. 



