THE CANADIAN ENTOMOLOGIST. 351 



and as ilie Iribhman said, " Hit the nail right wheie a great many have 

 missed it before." Better to " give a counsel of i)erfection " and hit a few 

 facts than to make a collection of Argynnids with only one or two of each 

 species, and imagine one knows all about the genus. 



Permit me to repeat, that each collector interested in the final disen- 

 tanglement of this genus should do all in his power to build up "large series 

 of species from every locality," for the very reason that "every few miles 

 in every direction is a separate locality," and we must know the fauna of 

 many more of these localities before completing the knowledge of the 

 Argynnids. 



As to the dimorphic males, there may be more to say some day, or 

 the author's views may prove incorrect. Stranger things than to name 

 varieties of well-known males as new species have been done by those 

 who hasten to place their names (be they bishops, doctors or laymen) 

 after the names of supposed new species. 



What I have written is not with any thought of opening up a contro- 

 versy, or in any sense to express my objection to the reviewer's remarks; 

 but to make more clear my views upon the subject, and prevent possible 

 wrong conceptions concerning the paper reviewed, both as to its aims and 

 contents. Arthur J. Snyder. 



BOOK NOTICE. 



A Natural History of the British Lepidoptera, etc. — By J. W. 

 Tutt, F. E. S. Vol. II. London and Berlin : May, igoo, pp. vi.- 

 584, plates i.-vii. 



The second volume of Mr. Tuti's exhaustive work has now appeared, 

 and this continuation merits all the good words which were so freely 

 spent upon the appearance of the first volume. We have first 100 pages 

 devoted to general subjects, such as Metamorphosis in Lepidoptera, and 

 the External Morphology of the Lepidopterous Pupa. And then (pp. 

 102-434) there is such a full account of the Psychides as has not yet 

 been published. This is the chief characteristic of Mr. Tutt's work, that 

 everything which has been written on a species has been consulted ; the 

 original description is given, the synonym is exhaustive, all known and 

 many new biological facts are carefully added. The number of pages 

 devoted to a single species is thus far in excess and the work has so 

 much more value for consultation. With regard to the Psychides, it 



