246 THE CANADIAN ENTOMOLOGIST. 



punctate, surface of the elytra more finely and regularly imbricate ; the 

 abdomen is smoother and more shining bronze, with the first ventral 

 slightly flattened ; the claws are alike on all the feet, the inner portion 

 quite broad and curving inward slightly, leaving a much wider space 

 between the apices than in the male. 



The pubescence of this species is not at all evident except on the post- 

 clypeal area, the anterior angles of the prothorax, and the apices of the 

 elytra. The sexes do not vary much in this respect, but I suspect that my 

 males do not show the normal elytral pubescence ; possibly it is 

 discoloured. On the under side of the body the vestiture is short and 

 sparse, giving a silver tint to the abdomen ; it becomes more dense on the 

 prosternum of the males. 



This species would naturally be placed next to angelicus in Dr Horn's 

 table (Trans. Am. Ent. Soc, XVIII, p. 283). Through the kindness of 

 Mr. H. C. Fall, of Pasadena, Cal., I have been enabled to examine a 

 specimen oi angelicus, and can say that it does not resemble the present 

 species in colour, form or punctuation. Champlaini might be confused 

 with anxms and allies, but the darker colour, more robust and shorter 

 form, sculpture, and structure of the claws should at once distinguish it. 



This species is represented by three specimens (emerged May 29, 

 1 9 11), two females and one male, all bred from the twigs of the horn- 

 beam, Ostrya virghiica, by Mr. Alfred B. Champlain, at New Haven, 

 Connecticut. The specimens and two of the galls were sent to me by 

 Dr. W. E. Britton from the State Agricultural Experimental Station in that 

 city. It is through the kindness of these two gentlemen that the above 

 description has been made. The galls were collected at Lyme, Conn., 

 April 30, 1 9 II. 



The gall is in each case about one inch in length, fusiform, expanding 

 to a diameter of 12 millimeters in the middle, and on branches of about 

 six millimeters in diameter. One of the galls was split open and the bark 

 removed from one side, so that the course of the larva was shown to be a 

 spiral from the point of entrance toward the end of the twig. It circled 

 the twig in four distinct courses, each one increasing in diameter about 

 one-half the previous one and leaving a ridge between them. They are 

 tightly packed with debris and are wholly in the wood, leaving the bark 

 intact. On the fourth spiral the gallery leads directly to the heart of the 

 branch, from whence it is hollowed out in an arcjate course downward 

 until it intersects the bark in an oblong exit very near the point of entrance. ' 

 The exit in the two specimens at hand measures three by two millimeters, 

 the long diameter being transverse to the twig. 



