7084 Insects. 



of the black and highly coloured males ; and in the second place, 

 having in my possession a male and female, taken in coitu, and pre- 

 sented to me by Mr. Baly. The latter fact it may be said is not con- 

 clusive evidence, since I myself on one occasion captured the male of 

 B. lapidarius in connexion with the female of B. terrestris : this is, 

 however, the only instance which I have observed during twenty- 

 five years of assiduous collecting, therefore such occurrences must 

 be rare. Should the discovery of a colony, in which all the individuals 

 are black, be made, a doubt of the propriety of uniting these varieties 

 might be entertained ; but even then, having in every instance, in 

 undoubtedly distinct species, found a most distinct difference in the 

 form of the male organs, I should be more inclined to consider the 

 black colony, as nothing more than an entire brood of the extreme 

 variety of the species. In M. Drewsen's collection the B. Harrisellus 

 is sent as a variety of B. subterraneus ; all the sexes stand there without 

 a doubt attached to them. 



Frederick Smith. 



Rough Notes on Canadian Hymenoptera. 

 By W. S. M. D'Urban, Esq. 



I MUST plead want of leisure for having bestowed only slight attention 

 on the Hymenoptera during the three years of my residence in Canada, 

 but Mr. Frederick Smith, of the British Museum, having obligingly 

 determined some of the few species I collected, I have assembled 

 together the notes relating to them, which I have found dispersed 

 through my journals of observations on Natural History, and venture 

 to offer them to the ' Zoologist' as a small contribution to Canadian 

 Entomology, which has, unfortunately, been much neglected. Besides 

 those enumerated below, I brought home a few new and undescribed 

 species, which I have presented to the British Museum. 



Family Tenthredinid^. 



Cimhex femoral a ^ Linn, (variabilis^ Klug). I took both sexes of 

 of this fine species north of the Ottawa, in the townships of Montcalm 

 and Arundel, in July, 1858, and I have received specimens from the 

 Falls of Niagara. At the end of August, 1858, in a small lake near 

 Hamilton's Farm, about fifty miles up the River Rouge, a tributary 

 of the Ottawa, into which it discharges itself about nine miles above 



