298 THE CANADIAN ENTOMOLOGIST. 



J. D. Evans, Trenton ; W. H. Harrington, Ottawa ; Professor Lochhead, 

 Guelph. 



Delegate to the Royal Society— Rev. Dr. Bethune, London. 



Delegates to the Western Fair—). A. Balkwill and W. E. Saunders, 

 London. 



Committee on Field Days— The Chairmen of the Sections and Dr. 

 Woolverton, Messrs. Balkwill, Bowman, Law, Moffat, Rennie, and Saun- 

 ders, London. 



Library and Rooms Committee— Messrs. Balkwill, Bethune, Bow- 

 man, Dearness, Moffat, and Saunders, London. 



REMARKS ON THE THIRD VOLUME OF TUTT'S BRITISH 



LEPIDOPTERA. 



BY HARRISON G. DYAR, WASHINGTON, D. C. 



The third volume of Mr. J. VV. Tint's "A Natural History of 

 the British Lepidoptera," etc., is marked by the same care and fullness of 

 detail as the previous volumes. The detail with which the subject is 

 treated appears in the fact that this volume of 540 pages treats of but 14 

 species of moths. It is a veritable storehouse of information. 



Mr. Tutt has quoted my views on the larval characters in several 

 places, and has raised certain questions in this connection on which I 

 wish to remark. 



For some unexplained reason, Mr. Tutt refuses to accept the 

 homology of the primary seta? of the Sphingidse as being the same as that 

 of other Lepidoptera (pages 233 note. 359, 364 note, 365, 367 and 499). 

 He states that tubercle v is absent, and there is an additional tubercle 

 before the spiracle, which is not v moved up, but something new. 

 I cannot imagine any reason sufficient to account for such a radical 

 supposition. How remarkable such a structure would be Mr. Tutt 

 himself does not seem to appreciate. If it were so, it would almost 

 remove the Sphingidte from the Lepidoptera; for if there is one 

 thing constant in Lepidopterous larv;e, it is the five upper primary setae, 

 which are absolutely uniform, not only in the Lepidoptera, but in other 

 allied lower forms, such as the Mecoptera. The number of these setae 

 may be increased by the addition of secondary ones, and they may 

 be obscured by specializations, but a subtraction from their number may 



