406 JOURNAL OF ECONOMIC ENTOMt)LOGY [\o\. 9 



produced from fertilized eggs is still tenable, despite the apparent con- 

 tradiction in case of number 6, for it is possible that all eggs laid by a 

 pregnant female are not supplied with spermatozoa. 



The female Rhogas oviposits, under laboratory conditions, in 

 larvae of the second and third instar; the parasite puparium is formed 

 when the host larva has reached the fourth or fifth instar. 



Conclusions to be drawn from this experiment are as follows: 



1. There are probably four complete generations of Rhogas term- 

 inalis in this region, with a maximum possibility of six generations per 

 year, 



2. The parasite hibernates in the puparium stage. 



3. The females are nearly twice as long-lived as the males. 



4. The parasite is present throughout the entire active season of its 

 host. 



5. The parasite oviposits only in second and third instar host larvse. 



6. Eggs are laid within the host. 



7. Parthenogenetically, males onh^ are produced. 



8. Mated females produce both males and females, the latter, how- 

 ever, are decidedly predominant. 



INVESTIGATION AND INSTRUCTION IN BEEKEEPING^ 



By MoRLEY Pettit, Provincial Apiarist, Guelph, Ontario 



It is the first duty of an investigator and instructor in Apiculture to 

 establish his reason for existence. This was done in the writer's first 

 annual report as Lecturer in Apiculture at the Ontario Agricultural 

 College, published in the annual report of that College for 1909, as 

 follows : 



"Beekeeping is one of the most pleasant, healthful, and profitable 

 of rural occupations. . . . 



''A large percentage of beekeepers fail from lack of good manage- 

 ment. This can be overcome only by education and training. Many 

 a one owes success to early training received in the apiary of an ex- 

 perienced apiarist. Add to this training a scientific college course in 

 the underlying principles of apiculture and you have greatly increased 

 possibilities for success. 



"To obtain an intelligent idea of the subject the underlying principles 

 of bee nature must be mastered. Bees are not domesticated in the 

 same sense as farm animals. Thej^ are simply wild insects induced to 



1 This and the following three papers were read at a meeting of Instructors and 

 Investigators in Apiculture held at the last annual meeting of the American Asso- 

 ciation of Economic Entomologists. 



