riERIS I. 



(luval, anil states that in all the figures only the black spot near the inner angle 

 is rep^X'sented, there being no sure indication of the other. In my examples of 

 CJdorld'ice, the female has both black spots, the males have a few black scales in 

 upper median interspace (Fig. 10), but none in the sub-median. This surface of 

 the fore wing is that of an Anthocharis. 



On the under side of secondaries, the general pattern is same in both forms, 

 the spots being bright }-ellow-green in Chloridice, more gray in BeckcrU. (See 

 Figs. 4, 7, in the Plate in Vol. I. The contrast is same as shown in Figs. 8, 10, 

 on the present Plate, of the apical area of under side of jjrimaries.) The patterns 

 of under side should count for little in Pieris and Anthocharis, inasmuch as in 

 both genera similar patterns in markings and color run through a whole sub- 

 group in repeated instances. It is to the upper side we must look for decided 

 diii'erences. 



All we have to consider is, does Becker 11 breed true to its type ? Undoubtedly 

 it does. No example has yet been seen differing in any degree from those fig- 

 ured in Vol. I. There is no evidence whatever that Becker ii and Chloridice 

 ever had any closer connection with each other than any two species of any sub- 

 group of butterflies may have. To_ assert that one is a variety of the other, there- 

 fore, is to assert what no one can prove, and no one can possibly know. All we 

 do know is that Becker'd is a permanent form, separated by important characters 

 from any other. That is to say, it is a species. We have to accept the facts as 

 we find them. 



Beckerll inhabits more or less of the Pacific slope from Oregon to Southern 

 California ; also Nevada, Colorado, and Arizona. Dr. Hagen's examples were 

 taken June 24th, 25th, and July 20th, and he regards them as of the summer 

 brood. Mr. H. Edwards took those which are figured in Vol. I., in Nevada, in April, 

 and they were therefore of the earliest brood of the year. Mr. Mead obtained 

 several of the butterflies in Southern California in May, 1878, from chrysalids, 

 some of which are in my collection, and these would be the second brood of the 

 year. Mr. Baron look the summer brood in Northern California. I see no dif- 

 ference between the two broods. 



