August, ’24] 
OBITUARY 
507 
In 1919, when the Provincial and Federal entomological activities were 
coordinated, Mr. Treherne was given the general direction of the work. 
In 1921-1922, in addition to his duties as Provincial Entomologist, he 
lectured in Entomology in the University of British Columbia. His 
entomological investigations in British Columbia related to the bionomics 
and control of such important pests as the cabbage root maggot, the 
onion maggot, the strawberry root weevil, the pear thrips, the codling 
moth, the pear twig borer, and several species of grasshoppers destructive 
to crops grown on ranch lands. In all of this work Mr. Treherne attained 
leadership and a large part of the development of the Federal and Pro¬ 
vincial entomological work in British Columbia is accredited to the 
organization perfected by him. 
In 1922 Mr. Treherne was transferred to Ottawa and advanced to the 
position of Chief of the Division of Field Crops and Garden Insects of 
the Dominion of Canada. One of the first things he undertook in his new 
position was to inaugurate the Insect Pest Survey and the Insect Pest 
Record, both of which have been of real service to entomological workers. 
In spite of his pressing duties in directing economic entomological work, 
Mr. Treherne found time to devote considerable attention to the 
Thysanoptera, of which he was fast becoming a leading authority. He 
also took a keen interest in boys and only a few months before his 
death had become identified with a new movement in Canada known as 
the Rover Scout Movement. 
Mr. Treherne was a member and an active worker in the following 
important scientific societies: 
American Association of Economic Entomologists 
Entomological Society of America 
Ecological Society of America 
Entomological Society of Ontario 
Association of Economic Biology (England) 
Fellow of the Entomological Society of London (England) 
During his residence in British Columbia he was an active worker of 
the Entomological Society of British Columbia and its success during 
his residence in the Province was due largely to his efforts. 
His earnest desire for economic entomology to develop on that broad 
and constructive plane so necessary for the rendering of the maximum 
service and usefulness was well illustrated by his leading part in the 
inauguration of and the participation jn meetings of Entomologists 
engaged in similar entomological problems. This was particularly true 
in regard to entomological workers interested in the European corn 
