THE CANADIAN ENTOMOLOGIST. 287 



Second and third submaginal cells each receiving a recurrent nervure; 

 first recurrent nervure in hind wings more than twice the length of 

 the first transverse cubitus, the anal cell longly 



petiolated Opisthoneura, Ashm., n. g. 



(Type O. Crevecoeuri, Ashm.) 



Costal transverse nervure interstitial with the apex of the basal nervure ; 

 third submarginal cell not twice as long as the first ; claws 



simple Marlattia, Ashm., n. g. 



(Type H. laricis, Marl.) 



Subfamily II. — Dineurin^. 



The petiolated lanceolate cell readily distinguishes this subfamily 

 from the former. In general appearance the species included in it recall 

 those to be found in the BUnnocavipina, the only marked structural 

 difference being the venation in the front wings. 



Only two genera are at present known, separated by the characters 

 made use of in the following table : 



Table of Genera. 



Transverse radius oblique and joining the third submarginal cell beyond 

 its middle ; claws of hind legs with a small, subapical 

 tooth Dineura, Dahlbom. 



Transverse radius straight and interstitial with the second transverse 

 cubitus, or very nearly, the latter itself being interstitial (or nearly) with 

 the second recurrent nervure ; claws bifid Mesoneura, Hartig. 



THE FREEZING OF INSECTS. 



BY HENRY H. LYMAN, MONTREAL. 



In the 22nd Report of the Entomological Society of Ontario, being 

 that for 1 89 1, there appeared a paper from my pen under the title " Can 

 Insects Survive Freezing?" 



I have recently come across further records of observations upon 

 this subject, and deem them of sufticient interest to be republished in the 

 Canadian Entomologist. 



In looking over an interesting book of travels entitled " A Journey 

 from Prince of Wales's Fort in Hudson's Bay to the Northern Ocean, 

 undertaken by order of the Hudson's Bay Company for the discovery of 



