u. 



THE OTTAWA NATURALIST 



VOL. XXV. OTTAWA, OCT. -NOV., 1911 Nos. 7-8 



FAUNA OTTAWAENSIS. 

 Order Lepidoptera: Superfamily Geometroidea. 



By Arthur Gibson. 



As a contribution towards the preparation of the Catalogue 

 of the Insects of Canada and Newfoundland, which was recently 

 outlined in The Canadian Entomologist and The Ottawa 

 Naturalist, the following list of the Geometridae which have 

 been found in the Ottawa district is presented. It has taken a 

 considerable number of years to collect the species here recorded, 

 and the list is, I think, a fairly complete one of these insects 

 which occur in this neighborhood. The late Dr. James Fletcher 

 collected many of the specimens and much material has been 

 gathered together by Mr. C. H. Young, of the Geological Survey 

 Department, who collected extensively at Meach Lake. To the 

 Rev. G. W. Taylor we are indebted for the determination of 

 many of the species. Recently the writer has received help in 

 the identification of certain species from Mr. John A. Grossbeck, 

 of the American Museum of Natural Historv, New York, and 

 Mr. A. F. Winn, of Montreal. 



Family Geometridae. 



Subfamily Hydriomenin^e. 



Dyspteris abortivaria H.-S. 28 Mav, 1901, (Young); 3 June, 



1903, (Fletcher). 

 Nyctobia limitaria Walk. 25 April, 1901; 28 April, 12, 13 May, 



1906; 16, 18 Mav, 1905, (Young); 26 Mav, 1899, (Gibson); 



4 June, 1906, (Fletcher). 24, 30, 31 Mav, 1 June, 1906, 



(Taylor). 

 X vctobia viridata Pack. 17 Mav, 1906, (Young); 23 May, 1903, 



(Gibson); 4 June, 1906, (Fletcher). 

 Cladora atroliiurata Walk. Bred 9 April, 1906; 10 Mav, 1901, 



(Gibson); 18 June, 1906, (Fletcher). 

 Rachela bruceata Hulst. 2 Oct., 1900; 4 Nov. 1905, (Gibson). 

 Ahophila pometaria Harr. 3 Nov., 1900, (Gibson). 

 Eudide mendica Walk. 24 June, 1899, 29 June, 1906; 13 Julv, 



1907, (Gibson). 



