96 THE CANADIAN ENTOMOLOGIST. 



in many cases the actual types are shown. We quote the authors' remarks 

 from the introductory chapter of Part I: "Owing to the relative rarity of 

 many of the smaller species from the south and south-west, very few of our 

 North American species have ever been figured. It has therefore seemed 

 advisable to us to illustrate as fully as possible. In many instances we 

 have been enabled to present a figure of the type specimen ; in all other 

 cases the specimen used for figuring purposes has been compared with 

 the type either by ourselves or some competent authority." vSome of the 

 types referred to are in rather dilapidated condition and it is well that 

 they have been photographed so that their appearance may be retained in 

 a more permanent manner and it is to be hoped that the under surface 

 has also been preserved photographically, although no under sides are 

 shown in any of the figures. Probably this is because, in these groups, 

 the markings of the under side are not of much value in differentiating 

 between species. 



While we have nothing but praise for this work, it is our duty to 

 mention the slight and almost inevitable typographical errors, which have 

 caught our eye. In Part I, page 33, lines 12 and 8 from foot of page, the 

 genus Prionoxystus is spelled without the second o.; and also on line 12 

 from foot for robince read robhiiœ. 



In Part II, in the explanation of Plates II and IV, the word forma is 

 printed in italics, making it appear to be part of the specific names, while 

 the text indicates that they are aberrations. 



We hope that these parts will shortly be followed by many others 

 dealing with groups badly in need of elucidation. The price of Part I is 

 $1.50 and of Part II $1.00, and they are obtainable from the authors. 



Since writing the above, Part III has come to hand, entitled "Revision 

 of the Megathymidae," 43 pages. Price, $1.25. 



There has been much confusion in identification of the species of 

 these "giant skippers," and also concerning the two sexes of several species, 

 as well as through publication of wrong figures — and the seven half-tone 

 plates of the butterflies, and of their structure, combined with the care- 

 fully-prepared text, should enable anyone to correctly identify the speci- 

 mens they may be fortunate enough to acquire. 



Other parts to follow in the near future will deal with "A List of 

 Types in the Barnes' Collection," " Illustrations of Typical and Rare 

 Specimens," and "Fifty New Species, Fully Illustrated." 



A. F. Winn. 



Mailed March 9th, 1912. 



