REVISION IVIALACOSOMA HUBNER IN NORTH AMERICA 81 



tending up canyons; or occurring in the Mexican plateau: 



occurring in the Mexican plateau area — 



some individuals oi incurvum aztecum, p, 183 

 occurring in central and southern Ari- 

 zona — rare individuals oi incur vum incur vum, p. 173 

 Various combinations of characters, but not agreeing with 

 those given above in every respect, occurring through- 

 out most of western North America; various populations 

 and subspecies of calif ornicum 13 



13(12). Middorsal, addorsal, and subdorsal areas black, except for 

 anterior and posterior blue-white subdorsal spots which 

 usually are present; often some irregular orange marks 

 may faintly set off the middorsal area (similar to figs. 

 352 and 354, but with weak dorsal stripe) ; distribution — 

 west central California near San Francisco Bay ... 14 

 Middorsal, addorsal, and subdorsal areas not entirely black, 

 either with distinct orange markings and subdorsal spots, 

 or with a blue subdorsal area; distribution — north of San 

 Francisco Bay in west central California, and many other 

 western states 15 



14(13). Supraspiracular and subspiracular areas bluish-white; lateral 

 setae white; distribution — southwest end of San Francisco 

 Bay (fig. 3; similar to fig. 354, but with a weak dorsal 

 stripe) . . rare specimens oi californicum ambisimile, p. 142 

 Supraspiracular and subspiracular areas black, sometimes 

 streaked with orange; lateral setae orange; distribution — 

 San Francisco Bay area except the southwest end (fig. 3; 

 similar to fig. 352, but with a weak dorsal stripe). 



rare specimens oi calif ornicum calif ornicum, p. 138 



15(13). Color pattern largely made up of orange or yellow and black; 

 blue usually reduced to anterior and posterior subdorsal 

 spots on either side of the vertical black bar; vertical black 

 bar usually distinct, but modified to resemble the "torso" 

 or "tailed torso" mark (figs. 7 and 9) ; supraspiracular and 

 subspiracular areas mixed orange, black and gray, with 

 little blue (figs. 370-372); distribution — Pacific Coast west 

 of the Cascades and northern North America (fig. 2). 



most californicum pluviale, p. 152 

 Color pattern usually not largely made up of yellow or orange 

 and black, but with more blue and less orange or yellow 

 (some specimens as in figs. 364 and 365 appear similar to 

 pluviale in dorsal view, but they are more bluish laterally) ; 

 vertical black bar present or absent; distribution — east and 

 south of that given for /^/wyza/^ in figure 2 16 



