191 



grey with no distinct maculation, except a slight darkening on some veins indi- 

 cating an obsolescent s. t. line, and a narrow black terminal line broken by 

 pale dots at the extremities of the veins; fringe concolorous, with a paler basal 

 line and interline. Secondaries: only slightly paler than the primaries, nearly 

 unicolorous, the veins slightly darker, the costal margin slightly paler; terminal 

 line and fringe as on primaries. Beneath : dirty whitish-grey, with an obso- 

 lescent pale common line bounded by darker shading; marked by dull ochreous 

 on basal-costal area of primaries and costal area of secondaries; secondaries 

 with an obscure blackish discal dot ; terminal lines and fringes as on upper side. 

 Expanse: 34-35 mm. 



Closely related to O. dcntosa Grote and possibly a western race 

 of that species. 



The genitalia of the present species and the other two described 

 species of Omphalocera seem very similar. 



The grey color and lack of distinct maculation should render 

 identification of the present species not difficult. The palpi seem 

 shorter and less heavily scaled than in dentosa; the antennae narrower, 

 and their scale tufts smaller. 



The authors have never seen dentosa from west of Texas ; nor 

 any forms transitional to occidentalis in either color or lack of macu- 

 lation. 



Type localities and number and sexes of types: Holotype $, Clark Co., 

 Nev., 24-30 June; Paratype $, High Rolls, N. Mex., no date. 



CHRYSAUGINAE 



TOSALE SIMILALIS sp. UOV. 



$ . Head, thorax, and ground color of primaries dull ochreons-brown ; 

 basal, t. a. and t. p. lines pale, the t. a. space of a darker shade than the 

 remainder of the primary but not conspicuously disconcolorous, median space 

 suffused in parts with grey, t. p. line excurved from costa, drawn in on vein 

 2, thence oblique to inner margin. Fringes blackish, interlined with a pale line, 

 and with pale tips. Secondaries : ground color slightly paler than the primaries, 

 the disc more or less suffused with fuscous. Fringes as on primaries. Beneath : 

 dull ochreous, the disc of the primary with a fuscous patch. Secondaries 

 powdered v/ith black scales and somewhat tinged with rufous, with a faint pale 

 median hne. 



9. Olivaceous instead of ochreous-brown, similar to the male in pattern; 

 but, as usual in the genus, lacking the black discal areas on the secondaries 

 above and the primaries below. 



Expanse: 16-18 mm. 



