296 THE CANADIAN ENTOMOLOGIST. 



catalogue. The authority, date and reference are given for each genus, 

 and under each species are given the date, author and place of publica- 

 tion of the original description, followed by any other published refer- 

 ences, the synonymy, habitat, and where the type can be found. Anyone 

 who has attempted to keep a record of the published references to our 

 Lepidoptera — and we have all . been compelled to do so in some form or 

 other — will appreciate the immense amount of labour that Prof. Smith 

 has performed in the preparation of this work, and must feel heartily 

 grateful that he has now relieved us of a task that few are competent to 

 accomplish satisfactorily. The saving of time, and the satisfaction of 

 knowing that one is not now likely to overlook anything that has been pub- 

 lished regarding a species, are no small boons to the student. For a full 

 explanation of the origin and purpose of the work, we must refer the 

 reader to Prof. Smith's somewhat lengthy preface, which will be found 

 well deserving of careful perusal. The general index at the end of the 

 volume makes the work complete, and we have no hesitation in saying 

 that it is the most useful publication on the North American Noctuidte 

 that has yet been issued from the press. We trust that the author will 

 before long be able to lay us under still greater obligations to him by the 

 publication of his contemplated monograph of the whole of this family 

 of moths. 



CORRESPONDENCE. 



CORRECTION. 



Sir, — In my last paper, " Washington Tenthredinidae, etc." I find that 

 I have made the lollowing mistakes : — Page 238, line 13 from top, 23 

 from top, and page 239, line 6 from bottom, the word labium should in 

 each case be labrum. A. D. MacGilijvray. 



. CALLIDRYAS EUBULE. 



Sir, — On the 5th of October last I observed a bright yellow butterfly, 

 much larger than any of our species of Colias, flying in the street here, 

 but it soon passed out of sight over some houses. On the 9th inst. I 

 observed some others, and at last succeeded in capturing what proved, 

 to my great delight, to be a specimen of Callidryas Eubule, the first 

 taken in the State of Iowa. Hitherto it has not been seen north of 

 Missouri ; though I have collected in this State for ten years, I have never 

 met with this butterfly before, but now I have taken no less than four 

 specimens, all females, and so fresh that they look as if they had just 

 emerged from the chrysalis. Keota is built upon " the divide," and is ten 

 miles either north or south from any heavy belt of timber, or any large 

 stream of water. These specimens must therefore be " wind-visitors," as 

 Mr. Grote terms them, and have been wafted here by the air-currents from 

 the south. A. S. Van Winkle, Keota, Iowa. 



Mailed November 4th. 



