Cjje dknabtim (fctttanmlopl 



Vol. II. TORONTO, OCTOBER 1, 1869. No. 2. 



TO THE READER. 



la order to enable future volumes of the Canadian Entomologist to date 

 their commencement from a less awkward time than the middle of a year, as 

 well as for other reasons that it is needless to specify, we have resolved upon 

 spreading the publication of the current volume over the remainder of this 

 year and the whole of the following one ; we shall thus issue a number about 

 every six weeks instead of monthly, and begin volume three in January, 

 1871. The following will be the dates of issue of the remaining numbers 

 of this volume, so far as they can be decided upon beforehand : — No. 3, on 

 November 15, 18G9 ; No. 4, on January 1, 1870 ; No. 5, February 15 ; No. 

 6, April 1; -No. 7, May 16; No. 8, July lj No. 9, August 15; No. 10, 

 October 1; No. 11, November 1 ; No. 12, December 1. In accordance with 

 this arrangement, we have delayed the issue of the present number, as will 

 have been observed, from September 15 to October 1. Contributions fo r 

 publication should be in the hands of the Editor about ten days before the 

 date of issue of a number, in order to secure insertion in it. 



ON A SPECIES OF HEMITELES (Ichneumonidae), 



Ascertained by the Editor to be parasitic in Canada on the imported Currant 



Worm Fly {Ncmatus veniricoivs. Klig.). 



BY BENJ. D. WALSH, )I.A. 



Not a single American species of Hemiteles, so far as I am aware, has as 

 yet been described under that generic name as occurring north of the "West 

 India Islands. Two of Say's Cryptus* indeed, namely Or. orhus, found in 

 Indiana, and Cr. tenrtlus, found in Pennsylvania, manifestly belong to this 

 genus ; and the latter may not improbably be identical with our insect, 

 though his description is insufficient to identify it, and scarcely separates it 

 from Henriteles thoracicus, Cresson, an inhabitant of Cuba. In my own 

 cabinet, besides the species that we now have to do with, I have no less than 

 nine undescribed species of this genus that were captured or bred in Illinois. 

 The genus may be conveniently divided into two principal groups, according 



