274 THE CANADIAN ENTOMOLOGIST. 



the many remarkable results of his work, there are three which will 

 always be associated with his name : the invention of the Cyclone or 

 Riley nozzle, the discovery of the kerosene emulsion, and the introduc- 

 tion of Vedalia cardinalis, through the agency of which, in controlling 

 the Fluted Scale, the cultivation of citrus fruits is now possible in 

 California. As a friend, he was kind, patient and true ; as an economic 

 entomologist, take him all in all, he was far and away the most eminent 

 the world has ever seen. Every one who could appreciate this great 

 man and his work, will deplore the sad accident which has cut off his 

 career when he was still at the height of his physical and mental vigour. 



J. F. 



STUDIES IN N. A. MEMBRACID.E— III. 



F. W. CODING, M. D., PH. D., RUTLAND, ILL. 



Subfamily Centrotin^, Stol. 

 Midtareis, gen. nov. 

 Head broad, with an angle on each side below the eyes, margins 

 parallel from base to apex, which is largely produced in a spoon-shape ; 

 base of the head nearly straight ; ocelli a trifle nearer the eyes than to 

 each other, on a line above the centre of the eyes ; head, at inner edge of 

 each eye, furnished with a compressed, dentiform tubercle projecting 

 directly forward ; head inflexed below the eyes. Prothorax convex, 

 elevated some above lateral angles, at summit, on each side armed with a 

 short, stout (truncated ?) horn, the sides of which are continuous withj 

 those of the prothorax, projecting upward, and parallel ; densely! 

 punctured ; basal margin projecting in a transverse carina ; furnished] 

 with a percurrent median carina ; posterior process gradually narrowed toj 

 the apex, which is briefly recurved in a compressed tooth or lobule ; the-j 

 base almost completely covering the scutellum ; dorsum of posterior] 

 process furnished with two rounded tubercles, the first located at the 

 base of the anterior convexity, the second midway between it and the 

 apex. Tegmina coriaceous, narrow, punctured, opaque, veins irregular! 

 and numerous ; barely passing abdomen, far surpassing the apex of the] 

 posterior prothoracic process; corium with the venation very irregular 

 towards apex, there being numerous discoidal and terminal areas varying] 

 greatly in size, and three basal areas; clavus attenuated gradually to' 

 apex ; wings with four apical areas, the second minute, triangular. Front 

 tibiae moderately dilated, with a row of fine spines along the edges. 



