Hagen.] 140 [November 22, 



All differ directly from P. Beckeri in one and the same char- 

 acter. The primaries of the female P. Beckeri have on the 

 underside two very marked black spots, one near the hind angle, 

 the other in the middle of the wing nearer to the margin. The 

 males never show those spots so large, sometime faint or even 

 wanting. I find in all figures of C. Chloridice only the black spot 

 near the hind angle given, and no sure indication of the other 

 spot. Besides, the upper and underside of P. Chloridice have 

 a certain kind of twin marks not to be found in the specimens of 

 P. Beckeri from Oregon, Washington Territory and California. 



The smallest females ( 3 ) expand a little less than 45 mm., 

 none 40 mm., as given by Mr. H. Edwards, all others 55 mm., or 

 a little more. The first figures of P. Chloridice differ among 

 themselves only in minor characters, which may be the result of 

 different skill of the artists. My specimens of P. Beckeri agree 

 perfectly with the excellent figures of Mr. W. H. Edwards, and 

 none have the maculose bands connected as on P. Chloridice. The 

 two spots on the underside have the same place on the upperside ; 

 only the very small spots between them are wanting on the under- 

 side. 



The question of the identity of the two species, or if one is to 

 be considered as a mere variety or a local race, can only be 

 answered when a sufficient large series of P. Chloridice can be 

 compared with a similar series of P. Beckeri. The examination 

 of a few specimens would not be deciding. Farther all I know 

 till now of P. Beckeri is the summer brood ; the spring-brood is still 

 unknown to me. Whether P. Chloridice represent summer or spring 

 brood is not known. This gap in our knowledge is very impor- 

 tant. P. Beckeri and Chloridice would be exceptional if they had 

 no spring broods. My California specimens have no date on the 

 label, but as Mr. H. Edwards has taken the species in April in 

 Nevada and the specimens seem not to have differed from the 

 specimens taken in June and July, perhaps the two broods of 

 P. Beckeri are identical, which would be exceptional in the 

 genus. 



For the moment we can state that P. Chloridice differs from 

 P. Beckeri only in its little larger size and the number of black 

 spots, which are more isolated. The broken white band of the 

 underside on the secondaries is represented in Esper's and Hueb- 



