:>0 THE CANADIAN ENTOMOLOGIST. 



between 80° and 95° in this region, and the niglits (in which these larvae 

 principally feed) being warm, may accelerate all the preparatory stages. 

 While the evidence from dissection is but negative, Mr. Siewer's evidence, 

 on the contrary, is positive, and if copulation takes place, Ave may be 

 pretty sure that eggs follow. 



BOOK NOTICES. 



The Rhyncophora of America north of Mexico, by John L. LeConte, 

 assisted by George H. Horn. From the Proceedings of the American 

 Philosophical Society, Vol. 15, 



This work, which fills a volume of 455 pages, is probably the most 

 important contribution which has been made to the Entomology of 

 America for many years. Its production must have been attended w'lth 

 immense labor and long and careful study. In addition to the work of 

 classifying this numerous and difficult group of insects, a very large num- 

 ber of new species are described. We tender our sincere thanks to the 

 authors for their kindness in sending us a copy of this useful and long 

 needed memoir. 



Manuscript Notes from my Journal, or Illustrations of Insects Native 

 and Foreign ; Order Hemiptera, sub-order Heteroptera. By Townend 

 Glover, Washington, D. C. 



In the 1 2th No. of Vol. vi., we called the attention of our readers to 

 the issue of a valuable work by the same author on Diptera. The volume 

 now at hand on the Hemiptera is published in similar form and style, 

 quarto on heavy paper, printed on one side only, and the text a fac-simile 

 of the author's handwriting. In this volume there are ten excellent plates, 

 nine of which are devoted to the illustration of the species to which the 

 notes refer, and one to the figuring of those portions of the insects on 

 which their classification is based. There are figures of 238 species, many 

 of the smaller ones in duplicate, one showing the insect magnified, the 

 other of the natural size. In addition to the plates and their explanatory 

 matter, there are 134 pages of text, 2 explanatory, 17 devoted to the 

 classification of the Hemiptera, and the remainder to notes on the insects 



