178 UNITED STATES NATIONAL MUSEUM BULLETIN 276 



scales. Lower surface of both forewings and hindwings variable in 

 color, but lower surface of hindwing often lighter than upper, and lower 

 surface of forewing usually about same color as upper surface or slightly 

 darker. Both forewings and hindwings crossed ventrally by a single 

 contrasting line which may be faint, especially on hindwing. Hindwing 

 often with darker area at anal angle on lower surface. 



MALE TERMINALIA (figs. 17, 42, 62).— As described for M. 

 incurvum (page 170), and indistinguishable from Ai. calif ornicum fragile 

 and other populations of M. calif ornicum found in the same area. 



ADULT FEMALES (females in figs. 300-308).— Color usually 

 slightly darker than males, ranging from light gray-brown to more 

 yellowish-brown. Lines on forewings light or dark, depending on back- 

 ground color and whether it contrasts with the line or with the lines' 

 narrow, lighter border. Lines usually with a few small indentations, 

 especially in outer line, but never cutting off "islands." Median area 

 often somewhat darker than inner and outer areas, but usually not 

 strikingly so. Hindwings not noticeably darker than forewings on most 

 specimens, and about same color. Lower suiface of both forewings and 

 hindwings about same color as upper surface, and crossed by a single 

 contrasting line which may be faint, especially on hindwings. 



FEMALE TERMINALIA (fig. 103).— As described for M. incurvum 

 (page 1 70) and indistinguishable from M. calif ornicum fragile and other 

 populations of M. calif ornicum found in the same area. 



ADULT DIAGNOSIS.— Males usually can be separated from M. 

 calif ornicum fragile and other populations of Af. calif ornicum which occur 

 in the same areas by their medium yellowish-brown color, with the 

 forewings crossed by light, brownish lines, and the somewhat darker 

 hindwings. The inner line is also quite evenly cui'ved and usually with- 

 out indentations along the veins; the outer line may have a few small 

 indentations, or rarely deeper ones. Male c. fragile (figs. 270-277) are 

 more whitish-gray and chocolate-brown, the lines on the forewings may 

 appear light, and they often have many conspicuous indentations along 

 the veins which frequently cut off "islands." Males of other populations 

 of M. calif ornicum are usually more reddish- or orange-brown, the lines 

 on the forewings usually appear light, and the lines may or may not 

 have conspicuous indentations along the veins. 



Females are much more difficult to separate, but female i. discolor atum 

 are usually a softei-, yellowish gray-brown, the lines on the forewings 

 are less sharply contrasted with the backgi'ound color, and they are 

 more evenly curved, with fewer and smaller indentations. Females of 

 c. fragile (figs. 278-284) are more gray-Vv'hite in color, the lines on the 

 forewings often have many indentations ranging from small to quite 

 jagged, and the lines contrast more with the background color. Females 



