THE CANADIAN ENTOMOLOGIST. 251 



arities of this insect are incorrect. In the October number is a full 

 description of the preparatory stages of Thecla Henrici by the same 

 author ; notes on an Aquatic Noctuid Larva, by J. H. Comstock, and 

 descriptive papers by A. R. Grote, B. Neumoegen and Henry Edwards. 



Bulletin No. 6, from the Department of the Interior, U. S. EntoiJiological 

 Commission, being a General Index and Supplenmit to the Ni?ie Reports 

 of the Insects of Missouri. By C. V. Riley ; 8vo. , pp. IJJ : 



This useful pamphlet will add much to the value of the Missouri Reports, 

 containing as it does a very complete index to all the matters contained 

 therein. Following the introduction we have tables of the contents of the 

 nine reports, then a list of errata, followed by a few pages of notes and 

 additions ; then follow descriptions of new species, descriptions of ado- 

 lescent states, lists of illustrations, a copious general index and an index 

 to plants and food plants. 



On the Genera of Carabidce, with Special Reference to the Fauna of Boreal 

 America. By George H. Horn, M. D. Frofn the Transactions of the 

 Anier. Ent. Society, October, 1881, lOj pp., with eight plates : 



In this paper the author dwells at some length on the value of the 

 modifications of various organs of the body in the Carabidas, for the pur- 

 poses of classification, following with a complete classificatton of the tribes 

 in this order, the points of difference being illustrated by examples in the 

 excellent plates which accompany the text. Throughout this work there 

 are many tables wherein the main points of difference are grouped in such 

 a manner as to enable the student to readily recognise the many genera 

 into which our numerous species are divided. This addition to our Ento- 

 mological literature will prove a great help to Coleopterists, and only those 

 who know the extent of this subject will be able to estimate the amount 

 of labor and careful study required to produce such a work as that we 

 have before us. 



The Honey Ants and the Occident Ants. By Henry C. McCook, D. D. ; 

 8vo., pp. 188, illustrated with thirteen plates, 1882 : 



This work, in the words of the author, is " a monograph of the archi- 

 tecture and habits of the honey-bearing ant, Myrmecocystus melliger, with 



