150 THE CANADIAN ENTOMOLOGIST. 



46. yEschfia clepsydra. Say. — De Cirassi Point, Sept. 9, 1901 ; Dwiglu, 

 Aug. 23, 1903 ; Algonquin Park, Aug. The commonest species in 

 Algonquin Park in 1902-03, but scarcer southward. 



47. j-EscJma verticuHs, Hagen. — ^Point Pelee, Aug. 7, 1901; Toronto; 

 De (irassi Point, July 16-Aug. 28, 1901, abundant; Tobermory, Bruce 

 Co., Aug. 25, 1901 ; Algonquin Park, Aug.; Thessalon, Algoma. 



48. Aiiax Junius, Drury. — Toronto, Ai)ril-June, Sept., abundant; 

 De Grassi Point, July 9, 1901, Aug. 8, 1901, teneral : Stokes Bay, Lake 

 Huron, Aug. 27, 1901 ; Queenston, July i, 1903. The earliest si)ecie3 to 

 appear in the spring. 



Family Libef-lulid^. 

 S ub-fam i ly Macroniiince. 



49. Macromia Illinoiensis, Walsh. — De Grassi Pt., July 17-Aug.; 

 Algonquin Park, Aug. 



This species breeds in Lake Simcoe, and the exuviae are often found 

 upon tree-trunks and boathouses, usually ten or fifteen feet from the shore, 

 and sometimes six or seven feet above the ground. The imagoes are 

 often seen patrolling the roads through the woods, where they fly with 

 great swiftness in a more, or less regular beat, and seldom rest. They 

 may also sometimes be seen flying low over the water. 



50. Didymops traiisversa, Rambur.— De Grassi Point, July 4, 1901, 

 I $ from poplar thicket. I have seen two or three others, but they are 

 very rare. A number of exuviae were found in Algonquin Park, where 

 they are i)robably fairly common. 



Sub-family Cordtdince. 



51. Neurocoj-duiia Yamaskanensis, Pro v. — A number of exuvise of 

 a Neurocordulia were found on the logs of a timber-slide on Ragged Lake, 

 Algonquin Park, in Aug., 1903. Drs. Calvert and Needham, to whom 

 specimens were sent, both expressed the opinion that the species should 

 be Yamaska?iensis, as the nymph of obso/eta, the only other regional 

 species, is already known and is distinct. JV. Yamaskaiiensis was 

 despribed by Provancher from specimens taken on the Yamaska River, 

 P. Q. 



There is a (^ JVeurocordulia in Dr. Brodie's collection which is not 

 obsoleta, but I had no opportunity of ascertaining whether it be Yamas- 

 kanensis or not. 



52. Epicordulia princeps, Hagen. — Hamilton (Anderson); Toronto, 

 June; Algonquin Park, Aug., i exuvia (Hahn). 



