72 THE CANADIAN ENTOMOLOGIST. 



of ochre yellow along veins and in the apices. Discal spot more curved 

 than above. On the hind wings the colour is more dense towards 

 the costa. A large white, slightly tapering streak, directed inwardly. Ex- 

 panse, 40 mm. 



$ . Similar to the male, but larger. 



Syfichloe australis, new species. 



^ . Upper side : Primaries, white ; ai)ex rather densely shaded 

 with blackish-brown, especially along the veins, gradually thinning out 

 towards the inner margin. The discal spot is simply a blackish-brown 

 dash, oblique. Hind wings white, the markings of the under side giving 

 it a diluted appearance. Under side : Primaries white, the apices suffused 

 with lavender-gray, lightly marked with the prevailing colour of the 

 secondaries, and also along the costa to the Lase. Discal spot larger and 

 slightly crescent-shaped. Secondaries varying from drab to olive or hair- 

 brown, mottled in dashes and streaks, densest along veins and towards 

 base and costa. The white dash is comparatively small. Antennae annu- 

 lated ; club dark brown, tip yellowish. Thorax and base of wings, black- 

 ish-brown. 



Expanse, 50 mm. 



$ . Similar to the male. 



Types, i $ and 2 $ ? , in the collection of the author. Five topo- 

 types in the collection of V. L. Cle'mence. 



Types locality : Arroyo Seco Cafion and Millard Canon, Pacific 

 slope of the St. Gabriel Mountains, Los Angeles county, California. Ele- 

 vation 2,500 feet. April 6, 1899, and April 8, 1907. 



I have thirteen typical specimens of lanceolata from Plumas county, 

 Calif., July, 1902, before me. 



These two species differ so decidedly in practically all points that 

 they can hardly be confused by anyone ; the density of the apical shading, 

 the shape of the discal spot, the exact colouring of the under side of the 

 secondaries particularly, and the white dash, are all distinctive and easily- 

 observed characters. The colour of the under side of the secondaries has 

 heretofore been very vaguely indicated, but here they are very important, 

 so I .have consulted Ridgway's "Nomenclature of Colours" for the correct 

 ones. 



Students of butterflies have sadly neglected the comparative study of 

 the species to the minutest details, and their relation to the evolution of 

 the physiography of the region ; before we can gain any knowledge of the 

 evolution, origin and distribution of the butterflies, the study of physiog- 

 raphy must be taken up along with the butterfly structure. 



