COLIAS IV. 



I have received a letter from Dr. James S. Bailey of Albany, N. Y., stating 

 that in the autmiin of 1876 he took what he supposed to be Keewaydin within 

 five miles of Albany ; and in Vol. VII., Canadian Entomologist, 1875, Mr. C. 

 W. Pearson of Montreal, Canada, mentions taking an Eurytheme fresh from 

 chrysalis. 



The butterfly figured on Plate of Keewaydin, in Vol. I., as No. 7, supposed 

 to be a variety of that species, is regarded b}' Mr. Henry Edwards as distinct, 

 and has recently been described by him as C. Harfordii. 



Note. — After the foregoing pages were in type, I received letters from Mr. Mead, in California, passages 

 from which well illustrate the extreme differences in climate in that State, and the effect upon insect life. 

 " Yo Semite, June 10, 1878. Up the watercourse behind the hotel. I found quite a snow-bank remaining, 

 and near it the plants had hardly more than budded. One clump of a certain bush was in full blossom on the 

 side towards the ravine, and was loaded with nearly ripe fruit on the other side. This state of things, of 

 course, causes a succession of fresh individuals among the butterflies, so that spring and summer broods cannot 

 be well defined from e.ach other where they e.xist." June 16. "The snow lies in large patches in the high- 

 lands still, and the willows are just putting forth their catkins. In ten d.iys or two weeks there ought to be 

 something to collect up there." At Gl.acier Point, in the s.ame region, Mr. Mead notices that by a few tlut- 

 terings of the wing, a butterfly may drop two thousand feet or more perpendicular, and arrive at a wholly 

 different climate. 



From Tallac Point, Lake Tahoe, on the eastern boundary line of California, August 4 : " Tallac Peak, on 

 the south side of the lake, is exceedingly precipitous, and the snow lies in great banks in the ravines all sum 

 mer long. On the north side, however, the mountain slopes with a comparatively gentle inclination, and is 

 overgrown with bunch grass, in many pl.aces even to within one or two hundred y.ards of the summit. Part 

 way up the mountain I tooK Pyrameis Cari/e, a butterfly found abundantly throughout the lowlands and even 

 in the tropics. This region is said not to have very intensely cold winters, but the snow falls in enormous 

 quantities — twenty feet deep on a level — so that the ranches, except some on the lake shore, are entirely 

 deserted in winter, the farmers moving with their cattle to the lowlands, where pasturage is good." 



