90 Journal New York Entomological Society. [Voi. v. 
and immature. But even when fully matured they were sluggish and 
easy to capture. By the middle of July they had mostly disappeared. 
Tetragoneuria spinigera Selys. One female taken on the side 
of a house nearly a mile from the river in May. Dr. Kellicott identified 
this as spinigera with some doubt, but expressed himself as certain that 
it was distinct from either of the two preceding. 
Somatochlora tenebrosa Say. One example of this beautiful in¬ 
sect was taken in a tamarack swamp at Clarence, N. Y., July 2, 1895. 
Somatochlora linearis Hagen. Taken on Grand Island byJMr. 
Philip Fischer. 
Tramea lace rata Hagen. One specimen taken in the^city far 
from the water on August 20th. 
Libellula basalis Say. Common through June and (July along 
Niagara River and Tonawanda Creek, where the water is deep. 
Libellula quadrimaculata Lin?i. Numbers seen about a springy 
spot among the hills in July, 1895. These, though perfectly mature, 
were of a rich olive brown color, becoming greenish on the mesonotum, 
and the black basal triangles on the hind wings were conspicuously 
veined with white. Though differing in some respects from T typical ex¬ 
amples, Dr. Kellicott pronounces them undoubtedly quadrimaculata. 
Libellula semifasciata Burm. June and July. Rare’about Buf¬ 
falo, but seen in considerable numbers along the railroad ditches at 
Ridgeway, Ont. 
Libellula pulchella Drury. June to August. Abundant] every¬ 
where but especially about Black Rock Harbor. 
Plathemis trimaculata De Geer. Common around mill-ponds 
and stagnant pools everywhere in the country about Buffalo, but' rarely 
seen along Niagara River. 
Leucorhinia intacta Hagen. Very abundant on the stones and 
water plants in Niagara River and Black Rock Harbor through June 
and early July. This species shows much variation in the extent of the 
yellow markings on the abdomen and of the fulvous shade on the base 
of the wings. When fully colored it is a most beautiful insect. Back 
in the country it is rarely seen, only a few individuals find their home 
along deep sluggish streams. 
Diplax rubicundula Say. Common from July to September. The 
immature taken in June. 
