128 



THE REPORT OF THE 



No. 19 



hair-like appendage on posterior segment of abdomen 1| m.m. long. The 

 abdomen contains 11 segments. 



When mature the larvae drop to the ground and make a little cell about 

 3 inches below the surface of the sod. They pass the winter as larvae and 

 pupate in the spring. 



Fig. 70. Spruce Sawfly larva ; head and anal seg- 

 ments — greatly enlarged . 



The adult Sawflies (Fig. 69) appear about the 20th of May. They 

 spend only a few hours depositing their eggs and then disappear. The saw- 

 fly is a large, black, shiny insect, about 14 m.m. long. The mandibles and 

 a part of the face is yellow, the rest of the body is black. The thorax is 

 feebly punctured. The antennae are about 9 m.m. long and 32 jointed. 

 The upper wings are mostly clear, while the lower wings are clear above 

 and dusky toward the outer margin. 



BUMBLE-BEES THAT EEETILIZE THE RED CLOVER. 

 By T. D. Jarvis, Ontario Agricultural College, Guelph. 



In the month of June Mr. C. C. James, Deputy Minister of Agriculture, 

 mailed to our department a letter which he had received from the New ' 

 Zealand Government, enquiring for information on the species of Bombus 

 that fertilizes the red clover in Ontario so that they might find out what 

 species is most useful in clover fertilization. 



The following is a copy of the letter received from Mr. 0. B. Pember- 

 ton, Secretary of the Canterbury Agricultural and Pastoral Association, 

 Christ church,' New Zealand, 26 May, 1905. 



The Secretary of Agricvlture. 



Sir I take the liberty of writing to you on behalf of this Association regarding 



the- fertilization of Red Clover in Canada. 



A CommitteB of this Association has been appointed to enquire into the fertiliza- 

 tion of red clover in other countries with the view of the introduction of the bees most 

 suitable as fertilizing agents. 



Before the introduction of the bumblebee into New Zealand from England m 1855, 

 the vield of red clover seed was not sufficient to be commercially payable. Since the 

 introduction, however, the yields have been more prolific, but it is still thought that 

 the best results have not yet been obtained. 



