298 ~ THE CANADIAN ENTOMOLOGIST 



The fact remains that by the importation of plants from 

 foreign countries (64,652 cases were brought into the U. S. during 

 the season of 1915-16, according to the report of the Fed. Hort. 

 Bd. for year ending June 30, 1916) we are slowly but surely add- 

 ing to the number of pests which we already have in this country, 

 thereby increasing the burden which future generations will have 

 to bear. And the remedy? A national quarantine of all foreign 

 nursery stock. 



Explanation of Plate XIV. 



Fig. 1, Blaherus discoidalis, a tropical roach (natural size). 



Fig. 2, Gryllotalpa gryllotalpa, the European m6le cricket 

 (natural size.) 



Fig. 3, Choliis forhesii, a tropical orchid weevil, (after H. S» 

 Barber), (enlarged). 



LECTOTYPES OF THE SPECIES OF HYMENOPTERA^ 

 (EXCEPT APOIDEA) DESCRIBED BY ABBE 

 • PROVANCHER. 



BY A. B. GAHAN AND S. A. ROHWER, BUREAU OF ENTOMOLOGY, 



WASHINGTON, D.C. 



Introduction. 



This paper, which is a contribution from the Branch of Cereal 

 and Forage Insects and the Branch of Forest Insects, is largely 

 based on an examination made in May and June, 1915, of the 

 Provancher collections located in the Museum of Public Instruc- 

 tion at Quebec, and in the possession of Mr. W. Hague Harrington 

 and the Department of Agriculture at Ottawa, Canada. 



This study was undertaken in order to determine in so far as 

 possible the correct position of the Provancher species in the 

 modern classification and obtain notes which would supplement 

 the original descriptions, and thus facilitate recognition of the 

 species, many of which could not be certainly identified by the 

 original description. Notes of greater or less extent were obtained 

 on all but a few of the species of Hymenoptera, excluding "the 

 Apoidea, especial stress being laid, however, upon the sawflies 

 and the parasitic forms belonging to the Ichneumonoidea. In 

 some groups our notes consisted principally of a record of the 



September, 1917 



