56 



spots of primaries lacking. We figure a $ and $ of this race from 

 Provo, Utah. 



In the central regions of Brit. Columbia at lower altitudes and 

 extending down through Eastern Washington, Idaho, and Montana 

 we find a very large form with the 2 's more heavily marked with 

 black than in sayi Edw. and tending towards hcrmodur in everything 

 except size. This has been named magnus by Wright in his Butter- 

 flies of the West Coast and renamed pscudocorybas by Verity (Rhop. 

 Pal. 107, 1909) ; the specimens figured by Wright as hermodur (1. c. 

 PI. II, Fig. 6) are typical pscudocorybas but we cannot separate this 

 from magnus (which is figured on the same plate) ; in the series from 

 various localities before us we have specimens which would fit either 

 figure equally well. 



In the Southern Sierras the form bchri Edw. with yellow or 

 orange spots instead of red seems fairly constant; niger Wright may 

 be an extreme aberration of this race, although superficially it agrees 

 with nanus or mcndica. 



In the light of the above remarks we offer the following group- 

 ing:— 



smintheus Dbl. & Hew. Can. Rockies. 



ah. nanus Neum. 

 mcndica Stichel 

 minor Verity 

 form alt. hermodur Hy. Edw. Rocky Mts. of Colorado (high al- 

 titudes). 

 ab. nigerrima Verity. 

 a magnus Wright. Cent. B. C, Idaho, Mont. 



pscudocorybas Verity. 

 b sayi Edw. Colorado (low altitudes) Utah. 



c behri Edzv. High Sierras, Calif. 



ab. niger Wright, 

 d. apricatus Stichel. Alaska. 



P. clodius Men. 



Stichel's arrangement of this species seems in general satisfac- 

 tory; the type form is the large Californian race taken at medium 

 altitudes ; this grades into the high altitude form baldnr Hy. Edw. 

 of the Sierra Nevadas which is considerably smaller in size and tends 

 to a reduction of the red spots of secondaries (form menetricsi Hy. 

 Edw.) culminating in ab. lusca Stichel in which the posterior spot is 



