54 THE CANADIAN ENTOMOLOGIST. 



not at all, in this last case being of a clear yellow-buff. Sometimes the 

 marginal spots are silvered, the others not. Some examples have the 

 ground with a reddish tint. But whatever the variation in other respects, 

 the spots of second and third rows are heavily edged with black on the 

 basal side. The females agree closely with the males in coloration and 

 variability. In Moniivaga, the ground of secondaries is red-tinted, the 

 basal and discal areas are pretty uniform reddish-brown, light and not 

 deep ; the spots are moderately silvered. In a larger series than I have 

 examined probably some examples would be well silvered, some with no 

 silver at all. The black edging of the spots is at most very slight indeed, 

 often nil, or represented by a few scales only. The females arc of same 

 expanse of wing and resemble the males in coloration below, the spots 

 being well silvered ; but they are paler on upper side, with the spots cor- 

 responding to second silvered row, light colored a little like Calippe, as 

 Dr. Behr notices in his first paper spoken of. I have three females 

 lately received from Plumas Co., Cal., and probably this species has a 

 wide range among the mountains. 



2. Zerene, •Bois. In Mr. Strecker's Catalogue all the above-named 

 species, and Rupcstris Behr, with a query, are set down under the title 

 Zerene, Bois., as varieties thereof ( Montivaga everywhere being called 

 Montivago, which is not Behr's name). Now Zerene, Bois., and Monti- 

 cola, Behr, are either forms of one species, or two species so closely 

 related that Boisduval's diagnosis of Zerene, in 1852, covered both of 

 them. Zerene has no particular affiliation with Egleis or its allies. It 

 belongs to a distinct sub-group. Yet Mr. Strecker places what he 

 allows to be two good species between Monticola and Zerene, 

 namely, Hesperis and Inornata (which belong naturally to other 

 sub-groups), besides two species which are just as certainly good and 

 neither especially related to Zerene or to each other, namely, Rhodope 

 and Behrensii, but are given as merely varieties of Monticola. His series 

 runs thus : 205, Monticola, var. a. Rhodope, var. b. Behrensii, var. c. 

 pt/rpitrascens, H. Edw.; 206, Hesperis; 207, Inornata; 208, Zerene, 

 var. a. Irene, var. b. Mormonia, var. c. Montivaga ?, var. d. Rupestris ; 

 209, Eurynome ; 210, Arge. Besides that, Zerene and Monticola are 

 either one species or stand together in a natural series ; purpurascms is 

 Zerene of Behr (Hydaspe Bois.). 



Dr. Behr, in the paper of 1862, described a species as No. 8, and in 

 that of 1863, applied to it the name Monticola. In a note under his 



