362 THE CANADIAN ENTOMOLOGIST 



on the flowers of the choke cherry. Type in the collection of the 

 Boston Society of Natural History. 

 Brachyopa flavescens Shannon. 



B. flavescens Shannon, Insecutor Inscitise Menstruus, Vol. Ill, 

 p. 144, 1915. 



This species is closely related to B. media from which it can 

 be separated only by its somewhat smaller size and lighter coloured 

 thorax. In some specimens the anterior portion of the thorax is 

 dark brown, strongly suggesting that it may prove to be only a 

 variety of B. media. 



Specimens agreeing with those from the type locality, Dead 

 Run, Va., ha\e been collected on the summit of Mt. Greylock, 

 Mass., June 15, 1906, Bretton Woods, N.H., June 26, 1913. and 

 near the Glen House, base of Mt. Washington, N.H., June 14, 

 1916. 

 Brachyopa media Williston. 



This widely distributed species varies considerably both in 

 size and colour. In sonie specimens the legs are quite dark and 

 the abdomen has a distinct median line. It has been collected 

 at Bretton Woods, N.H., June 24; Glen House, N.H., June 14 and 

 June 15, Jaffrey, N.H., June 21, 1917, and Sherborn, Mass. 



BOOK NOTICES. 



GuiDjE TO THE INSECTS OF CONNECTICUT, Part III. The Hymen- 



optera or Wasp-like Insects of Connecticut. Bulletin No. 22, 



Connecticut Geological and Natural History Survey. By 



Henry Lorenz Viereck, with the collaboration of A. D. Mac- 



Gilliv'ray, C. T. Brues. W. M. Wheeler and S. A. Rohwer. 824 



pp.. 10 plates. Hartford, 1916. $1.50. 



This is the first attempt to present a complete systematic 



treatise of the Hym^noptsra of any stit3 of the Union and the 



State Entomologist. Dr. Britton. under whose direction the work 



was undertaken, as well as the various authors, deserve the thanks* 



of the entomological public throughout North America, for the 



admirable manner in which their work has been accomplished. 



In the Introduction, by Mr. Viereck. the general characters 



of the order Hymenotera are set forth and the economic significance 



.of the various groups is discussed. The various superfamilies 



