214 THE CANADIAN ENTOMOLOGIST. 



of any of them have been held during the last two years. At Guelpli, on 

 the otlier had, there is a lai"ge and active list of members. During the 

 first and second years of the College course attendance at lectures on 

 Entomology is compulsory, and during the third and fourth years some of 

 the students specialize in the subject, and make it a serious and scientific 

 study — these naturally become active members of the Society, and 

 continue their connection with it after they leave college and scatter over 

 the country. There will also be at Guelph a continuity of work and 

 interest through the permanent staff of a Professor, Lecturer and Demon- 

 strator of Entomology. The books and specimens will be much more 

 largely consulted and the usefulness of the Society greatly extended. It 

 is therefore believed iliat the contemplated removal will be in the best 

 interests of the Society. 



STUDIES IN THE GENUS INCISALIA. 



BY JOHN H. COOK, ALBANY, N. Y. 



II. — Iiicisa/ia august us. 



Time of flight. — Species single brooded ; butterflies to be found 

 during late April and early May. I have taken the male as early as the 

 nth of April, but usually the first imagoes appear about the 20th. They 

 become abundant by the first of May, after which time the females may be 

 observed ovipositing, and the males rapidly disappear. After May loth 

 worn individuals only are seen, some of which may endure even to the 

 end of the first wetk in June. 



Oviposition. — Eggs are laid during the first two weeks in May (and 

 probably later) on Vaccinium vacillans and Kalmia august if olia. Since 

 the caterpillars will eat V. corymbosum and V. peuusylvauicum quite as 

 readily as V. vacillaus^ it is probable that these plants also are oviposited 

 upon. I have been unsuccessful in attempts to induce the larvae to feed 

 upon any other of the indigenous Ericaceiz or Rosacece. 



When placed upon Kalmia the egg is tucked in between the individ- 

 ual buds of the fascicle, often so deeply that the buds must be broken 

 apart to find it. When placed upon Vacciuiu?n its position depends upon 

 how far open is the flower bud selected by the female. If she finds it 

 possible to thrust her ovipositors between the green bud and the brown 

 shelly scales, or between the outer and inner series of the latter, she does 

 so, and the scale, springing back to its former position, completely covers 



J uly, 1906 



