74 THE CANADIAN ENTOMOLOGIST. 



before rising slightly and moving to another location. Earlier in the day 

 a Soniatochlora (?) of similar size was seen over a clearing near the lake, 

 flying at an average height of possibly 20 feet." 



At De Grassi Point, Lake Simcoe, they are quite numerous during 

 the latter part of June and July, and are occasionally met with in August. 

 Here they frequent woodland roads and glades, where I have most often 

 seen them late in the afternoon, hovering in the sunshine in the manner 

 described by Mr. Williamson, sometimes in considerable numbers. They 

 seldom descend within reach of the net, however, flying usually at a 

 height of 20-30 ft., the height increasing as evening advances and the 

 shadows creep up the trees. They disappear at sundown. I have also 

 occasionally seen them flying comparatively low over an open marsh at 

 the mouth of a broad, sluggish, weed-grown creek, in which the nymphs 

 probably breed, as it is the only suitable-looking place in the vicinity. 



Since my list was published I have added another species of Soni- 

 atochlora, S. Walshii (Scudd.), to the Ontario fauna, and Mr. Williamson 

 has taken a number of specimens of .S". elongata (Scudd.) at Hayden's, 

 Algoma. So that the Ontario records for this genus now stand as 

 follows : — 



S. elongata (Scudd.) Algonquin Park, Hayden's, July 31, 1906. 



S. Williamsoni, n. sp. Toronto, L. Simcoe, Temagami. 



.S". Walshii {?)Cu.^d.) De Grassi Point, Lake Simcoe, Aug. 7, 1906.; 



I ^ flying leisurely over field near edge of wood. 

 S. forcipata (Scudd.) Algonquin Park. 

 S. tenebrosa (Say.) Hamilton (?) 

 Several other species will be sure to appear in the north. 



Explanation of Plate 2. 



Fig. I. Somntochlora Williamsoni, n. sp. — Lake Simcoe, Ont., dorsal 

 view of ^ abdominal appendages 3 i a, lateral view of same ; ib, dorsal 

 view of 9 appendages ; ic, lateral view of same. 



Fig. 2. 6". elofigata (Scudd.) — Algonquin Park, Ont., dorsal view ^ 

 appendages ; 2a, same, lateral view. 



Fig. 3. S. minor, Calv. — Type specimen, Franconia, N. H., dorsal 

 view $ appendages ; 3a, same, lateral view. 



