134 



joining tlie internal margin midway between tlie angle and the base of tbe 

 transverse posterior line. It is of an intense deep brown with, a thread-like 

 white outer border. The gray terminal space is thus divided by it into unequal 

 portions. An interrupted black terminal line ; the gray fringes are a little 

 produced at the extremity of the nervules. Hind wings obscure ochrey white, 

 with a light brownish difiFuse exterior shade ; the nervules incompletely marked 

 with dark scales and a subcontiuuous marginal black line ; fringes whitish 

 with an internal dark line. Tegulae gray, contrasting with the light brown 

 collar and thoracic disc and tuft ; abdomen colored like the secondaries. Be- 

 neath the wings are pale, shaded with reddish over the apices and costal mar- 

 gins, sparsely dusted with dark scales, with a common exterior line emphasized 

 on the veins and faint discal dots more apparent on the hind wings ; a faint 

 subterminal line appears contrasted by the diflference in tone of the subterm- 

 inal and terminal shades. 



Expanse, 46 m. m. 'Length of body, 24 m. m. (including ovipositor). 

 HaUtat, California, Sierra Nevada (coll. Mr. Hy. Edwards, No. 2733). 



^ . — At first siglit, and with a different locality, the specimen I re- 

 gard as belonging to this species, would not be considered as refera- 

 ble to it. The thorax and fore wings are uniformly gray sprinkled 

 with darker scales. The reniform is concolorous and both spots rel- 

 atively larger. The most prominent difference is expressed by the 

 absence of the contrasting light and brown color of the subterminal 

 space, which is here concolorous. The subterminal line is, however, 

 here brown, distinct, and in its general course the same as in the 

 opposite sex ; it forms a more evident W-shaped mark by its denta- 

 tions on veins 4 and 3 ; it runs backward above vein 8 to costa, 

 leaving the apices gray; however a faint trace of this action is visi- 

 ble in the female, in which the apices are concolorous and apparently 

 fused with the subterminal space. The hind wings are more whitish 

 with a more determinate darker band and beneath the specimen 

 lacks the reddish shade of the female, with an otherwise similar 

 appearance of the wings. 



Expanse, 4G m. m. Lengtlt of hody, 22 m. m. Ilahitat, Colorado 

 Territory (coll. Mr. Theo. L. Mead, No. 54, "V,). 



A^rotis Vancoiivereiisisj Orote, Plate 4, fig. 4, 5 . 



i . — Light brown with pale shadings. A very broad distinct basal dash, 

 widening outwardly, extends into the median space, apparently concealing the 

 clavif(M'ni. T. a. line strongly dentate inferiorly. Discal spots set in the lihick 



