60 



true types; as Butler has already pointed out (Can. Ent. XXXI, 19, 

 1899) this is exactly the same form as that described and figured by 

 Beutenmuller in his revision of the genus Euchloe (Bull. Am. Mus. 

 N. Hist. X, 243, 1898) as elsa; it is apparently a northern race dis- 

 tinguished by its heavy green markings on underside of secondaries 

 leaving only traces of the white ground color visible. Creusa, being 

 the oldest name, must be used for the species collectively. 



Since Beutenmuller's revision of the group Verity has attempted 

 to deal with our North American forms in his Rhop. Pal. Vol. I, pp. 

 181 and 338/9 but, apart from overlooking Beutenmuller's paper, he 

 has, we fear, only added to the confusion by describing several forms 

 as new which have already been named ; he attempts to divide the 

 group into spring and summer generations following the example of 

 the European belia and ausonia, but from the fragmentary accounts 

 we have been able to glean in the literature the general consensus of 

 opinion among collectors is that the American forms are single brooded 

 (vide Edwards, Can. Ent. XXIV, 109; Butt. N. Am. Vol. II, Antho- 

 charis ausonides, text). 



Hyantis Edw. (creusa Beut. et Auct.) appears to be the Calif or- 

 nian race of creusa; it was originally described from Mendocino Co., 

 but apparently occurs through a good proportion of the Sierras ; Dr. 

 McDunnough took it sparingly in the Shasta region in June and Dr. 

 Barnes in the Lake Tahoe region in June and July ; Verity has re- 

 described it as pseudoausonides, regarding it as the spring form of 

 ausonides; this opinion is evidently refuted by the dates above men- 

 tioned and further by the fact that no second generation nor any 

 specimens of ausonides at all were taken in the above localities ; Ver- 

 ity's orientalides, said by the author himself to be very close to pseu- 

 doausonides, we cannot separate by Verity's figures alone and pre- 

 sume it to be a slight varietal form only ; however an examination of 

 the type material will be necessary to correctly place it. Hyantis may 

 be separated from creusa by the much greater proportion of white on 

 the underside of the secondaries ; in the 2 the general rule seems to 

 be for the discal spot of the primaries to be much larger and more 

 quadrate than in the $ ; Beutenmuller's figure (1. c. PI. XIV, Fig. 2) 

 gives a very accurate idea of this form of which we have a specimen 

 compared with the type; Holland's figure of creusa (Butt. Book PI. 

 32, Fig. 23) presumably refers to this form, his figure of the under- 

 side however (PI. 34, Fig. 2) is probably referable to lotta Beut. 



