THE CANADIAN ENTOMOLOGIST 101 



cable to iiuin>' areas ol eciual extent and equal diversity of ecological, conditions 

 in the North Temperate Zone." 



It is almost superfluous to afld that this excellent work should he in every 

 entomological lihrar\-, and that no teacher of systematic entomology can afford 

 to he without it. K. M. W. 



OuTHorrioKA OF NoKi ii1':.\st1':rn North Amicrk a with .Special Reference to the 

 Faunas of Indiana and Florida. By W. S. Blatrhley. The Nature Publish- 

 ing ("(). Indianapolis, 1920. 784 pp. 5 plates and 246 text figures. 

 The aim of this manual is to furnish a ready means of identifying any species 

 of Orthoptera found in the United States east of the Missippi River and Canada 

 east of the 9()lh meridian. It is intended for the use of the beginner rather than 

 the specialist, but the subject matter is treated in such detail that it is thoroughh' 

 well adapted to the needs of ilu' most advanced student as well. 



h is an outgrt)wth ol the author's well-known treatise on the Orthopterai 

 of Indiana, but not only deals with a large number of species not included in the 

 Indiana fauna, but the data on the latter forms is revised and considerably 

 expanded. It also differs in plan from the older w'ork in that it contains an 

 alphabetical list of synonyms at the end of the book, instead of list ng these 

 imder the head of each species; although the ]:)rincipal s\'non\'ms are mentioned 

 in the notes that follow the descriptions. 



One of the many excellent features of the book is the full discussion of the 

 haimts, habits and songs of the various species, in which Mr. Blatchley has 

 quoted at considerable length from other authors, selecting those passages 

 which are considered to be of most value to the subject. 



The illustrations are for the most part selected either from the author's 

 earlier work or from the works of other specialists, but include also two plates 

 of excellent original figures, by Mr. Fox, of the genitalia of the various species 

 of the genus Ceuthophilus. Unfortunately a few of the text figures were inverted 

 by the printer, but the pages on w'hich these occur have already been reprinted 

 with the figures in their correct positions. One of these figures is that of Arphia 

 sitlphiirea, and it was unfortunate that this figure was selected to illustrate 

 this species s-nce, in the review'er's opinion, it must have been taken from some 

 other species, the tegmina being quite unlike those of an Arphia in their trans- 

 verse fasciae, which with the shape and pattern of the hind wings, are typical 

 of Circoteltix verrucidatus. 



It is the reviewer's unpleasant duty to point out also certain other errors 

 and inaccuracies in this otherwise excellent manual, which have come to his 

 notice. 



The Articulata (p. 12) are divided into two great groups, the Vermes and 

 the Arthropods. The term X'ermes is here used, of course, for the segmented 

 worms (Annelida) only .It is now obsolete as the name of a taxonomic group, 

 but when in u.se was understood to include a number of other groups besides 

 the Annelida. 



In the description of the mouth-parts on p. 14 it is stated that the labial 

 palpi are attached to the labrum, and no mention is made of the labium. 



On page 21 the term lergite is used to designate one side of a tergum, whereas 

 it is generally employed to flenote the entire dorsal sclerite. 



