185 



i So. S. littoralis, Linn. 



Thus far taken here only in the gorge of Pipe Creek, neat- 

 West Falls, in July. 



1S1. S. deplanata, Uhler. 



A single example of this large species was taken Aug. 2d, 

 1S86, in a swale, by the railroad track at South Buffalo. 



182. S. interstitialis, Say. 



Several specimens of what I take to be this species were 

 captured on the borders of Niagara River, near Buffalo, in 

 Sept. 1886. 



183. S. pallipes, Fabr. 



Abundant from June to Sept. on the shores of Lake Erie and 

 along our inland streams. 



184. S. reperta, Uhler. ? 



Several examples of a little species agreeing very closely 

 with Mr. Uhler' s description of reperta were captured at Col- " 

 den, in July, and at Buffalo the last of August. 



185. S. orbiculata, Uhler. 



Rare, one specimen taken near Buffalo, in 1885. 



iSn. S. humilis, Say. 



Not uncommon on low swampy spots in pastures and open 

 woods where the water has dried away, leaving the ground 

 bare and moist. May to July. 



FAMILY BELOvSTOMATID^E. 



ZAITHA, Am. and Serv. 



187. Z. fluminea, Say. 



Quite abundant in Black Rock Harbor in Sept. 



BELOSTOMA, Auctor. 



188. B. americanum, Leidy. 



Rare. 



BENACUS, Stal. 



189. B. griseus, Say. 



April to Sept. Frequently attracted to the electric lights on 

 our city streets, where its large size makes it an object of 

 interest. 



FAMILY NEPID^E. 



RANATRA, Fabr. 



190. R. fusca, Pal. Beau v. 



Rare. A small colony of these curious insects was discovered 

 in a ditch near the "Sinking Bridge" at East Aurora, Oct. 24th, 

 1S91, by Miss T. Marion Schlegel. It may inhabit similar situ- 

 ations elsewhere in our district. 



