80 THE CANADIAN ENTOMOLOGIST. 



I will during the coming season, as far as my time will permit, endeavor 

 to ascertain the dates of appearance, duration, &c., of these species in 

 this locality, and I trust that Entomologists in other parts will do the 

 same, so that the life history of our North American species may be 

 worked up. 



IMPORTANT NOTICE. 



In consequence of the pressure of other engagements, our Secretary- 

 Treasurer, Mr. J. H. McMechan, has found it necessary to resign his 

 office. Until further notice, our correspondents will please address all 

 communications to the Editor. 



BOOK NOTICES. 



Packard's Half Hours with Insects, Boston, published by Estes & 

 Lauriat, 1877, 12 mo., pp. 384, illustrated, $2.50, which was originally 

 issued in twelve numbers, has lately been published in book form. We 

 desire to correct some typographical and other errors of importance. 

 Page 187, in explanation of Fig. 187, for Bucculating read Bucculatrix ; 

 page 289, line 23, for Disippus read Archippiis, and in line 25, iox Archip- 

 piis read Disippus ; page 305, line 13, for sumac read cottonwood, and on 

 page 306, in explanation of Fig. 236, for sumac gall read vagabond gall. 



We cheerfully commend this useful work to our readers. 



Report upon the Orthoptera collected by the Wheeler Expedition, by 

 Samuel H. Scudder ; 8vo., 17 p. In this paper the author gives much 

 valuable information in relation to the Orthoptera occurring on the eastern 

 slope of the Rocky Mountains; 17 new species are described, and 

 definitions of 8 new genera given. Report of the Hayden Expedition, 

 from the Department of the Interior, containing Brief Synopsis of North 

 American Ear-wigs, with an appendix of the fossil species ; 8vo., 12 p. 

 List of Orthoptera collected by Dr. A. S. Packard in Colorado, &c., during 

 1875 ; 8vo., 7 p. Notice of a small collection of Butterflies made by 

 . Dr. Packard in Colorado and Utah. All by Samuel H. Scudder. We 

 tender our best thanks to the author for copies of these papers. 



