181 



ACALYPTA, Wesjtw. 



144. A. sp. 



One example of an apparently undescribed species of this 

 genus was taken by me at Ridgeway, Ont., May 31st, 1SS6. 



CORYTHUCA, Stal. 



145. C. ciliata, Say. 



Abundant everywhere on sycamore. In winter they may be 

 looked for under the loose bark on the north-east side of these 

 trees. The insects of this genus are beautiful objects under a 

 lense. 



146. C. arquata, Say. (=C. juglandis, Fitch?) 



July to Sept. Common. I cannot satisfactorily separate 

 the small form that sometimes abounds on the under surface 

 of osier leaves from the larger form occurring on various trees. 

 Both present individuals without the elytral spines, and I can- 

 not make out any constant variation in the form of the scutellar 

 carina as mentioned by Dr. Stal, nor of the arquation of the 

 elytral costa used by Dr. Fitch to seperate his species from 

 that of Say. 



If this species is divisible I do not think the salient characters 

 have as yet been pointed out. 



147. C. sp. 



Not uncommon on oaks from May to Sept. 



148. C. marmorata, Uhler. 



July to Sept. A pretty little species, sometimes quite abun- 

 dant on bushes in clearings. 



GARGAPHIA, Stal. 



149. G. tiliae, Walsh. 



Abundant on basswood in July. 



FAMILY ARADID^. 



(A list of the North American species of this family, by 

 Dr. Bergroth, appeared in the Trans. Ent. Soc. of Wash., Vol. 

 II, pp. 332-338, Dec. 1892.) 



ARADUS, Fabr. 

 (Dr. Bergroth has kindly determined my material in this 

 difficult genus but as the specimens have not yet been returned 

 I can give but few dates. The localities are from his notes 

 and are correct.) 



150. A. 4-lineatus, Say. 



Lancaster, N. Y. and Ridgeway, Ont. 



151. A. robustus, Uhler. 



Colden, East Concord. The latter were taken near the bog 

 swamp, May 18th, 1889. 



