THE CANADIAN ENTOMOLOGIST 7 



could be detected between these darker forms and the normal one, 

 which also occurred in the same localities. 



6. Enallagma cyathigentm Charp. {annexum Hag.) 



One male, June 2.3rd, Black Lake; taken along with the following 

 species. The genitalia correspond exactly with Williamson's figure of 

 annexum in F]nt. News, XI, pi IX. Walker records a single male from 

 Go Home Bay (1915, Suppl. 47th Ann. Report, Mar. and Fisheries 

 Branch, 66) so that the occurrence of the species in the present region 

 is not unusual. 



7. Enallagma calverti Morse. 



Both sexes very common in copula around the Brae Pond, July 

 11th to 14th; a few specimens were also captured at Black Lake in June. 



8. Enallagma aspersum Hag. 



Ten males and one female of this dark-bodied species were taken 

 around the Brae Pond on Juh* 11th. The species does not appear to 

 have been previously recorded from Canada, but the similarity of 

 genitalia of the male specimens to Needham's figure (Bull. 68, New 

 York Sta. Mus., pi. XIX) renders the reference fairly certain. 



9. Nehallenia Irejie Hag. 



Common during the first half of July in the sedges bordering Brown's 

 Brae Pond, but easily overlooked on account of the low flight and small 

 size. 

 10. Chromagrion conditum Hag. 



A single male was taken, June 23rd, at Black Lake. No further 

 specimens were seen, although diligent search w^as made on subsequent 

 dates. 

 IL Ischnura vertical is Say. 



Extremely common all through the season at both places. 



ANiSOr-TERA. 



Aeshnidae. 



12. Gomphns exilis .Selys. 



Common along the shores of Black Lake, June 20th to July 1st. 



13. Gomphns spicatiis Hag. 



One female taken along with G. exilis, June 28th, belongs apparently 

 to this species rather than to sordidus. judging by the remarks of Kellicott 

 (Odonata of Ohio) and Williamson (Dragonflies of Indiana) and their 

 descriptions of vulvar lamina^. 



14. Basiceschna Janata Say. 



One male, July 1st, and one female, June 20th; others were observed 

 flying over the waters of a shallow inlet of the Lake of Bays. 



15. Aeshna canadensis \\'lk. 



Common during July around Brown's Brae Pond and vicinity but 

 difficult to capture. Three males were taken. 



Libellulidae. 



16. Didymops transversa Say. 



Three males and two females were taken June 23rd, July 1st, 

 patrolling along a moist road through a rather dense wood, busily 



