THE CANADIAN ENTOMOLOGIST. 239 



MISCELLANEOUS. 



Mr. W. H. Edwards, of Coalburgh, W. Va., wishes to know how far 

 north the black variety of iurnus, female, is found, and also how it com- 

 pares in abundance with the yellow variety at the west and south. We 

 trust that some of our readers will be able to supply the needed infor- 

 mation. 



J. C. Wasserman, 50 Beverley Terrace, Cullercoats, England, wishes 

 to exchange British Lepidoptera for Canadian ; parties desirous of 

 exchanging will please write him. 



Wm. Barnes, DecaUir, Illinois, wishes to exchange insects from 

 Decatur for Canadian insects, and with this view will be glad to corre- 

 spond with Canadian collectors. 



Mr. H. K. Morrison, of Cambridge, Mass., has been engaged during 

 the past summer in collecting the insects of Southern and Middle Georgia 

 and of the Black Mountains of North Carolina (6,700 feet high), the 

 latter a region hitherto unexplored. He has succeeded in obtaining a 

 large series of insects of all orders, especially Lepidoptera and Coleop- 

 tera. 



CORRESPONDENCE. 



OBSERVATIONS ON SPHINGID.E. 



My summer's experience with the larvae of rare Sphingidae is, that 

 Smerinthus astyhis Westwood, Smerinthas my ops Harr., Darapsa versicolor 

 Clemens, and Darapsa choerilus Walk, are all double brooded. A char- 

 acteristic of astylus is its caudal horn, which is armed with two spines at 

 its tip, appearing bifurcate at first glance. These spines are constant from 

 its hatching. Color of horn, dark brown at tip and base ; pale green in 

 centre*, pointing forward. The long life in its larval condition, and con- 

 sequent exposure, may in a measure account for its exceeding great rarity. 

 Have fed some from six to seven weeks. 



Smerinthus myops. — I have found that the red blotches on larvae are 

 not uniform, and are more prevalent on the late brood, although some are 

 entirely green and correspond in color to similar spots found on the 

 leaves of the wild cherry at that season. 



Darapsa versicolor. — Caudal horn points backward, is straight until the 

 last moult, when it assumes a fine curve to the rear. Color of curved 



* At last moult the dark brown is faded to an extremely light shade. 



