THE CANADIAN ENTOMOLOGIST. 149 



more or less black, the elytra often with a black line along the suture 



which may be dilated behind so as to extend over the greater part of the 



apical third. The prothorax is said to be occasionally black, but such 



specimens have never come under my notice. These beetles are often 



abundant on flowers on the Western plains of the United States. 



PuRPURiCENUS, Serv. 



Contains one species, F. /mineralis, Fabr., a large insect, .50-.74 



in. long, black, except a large triangular humeral spot on each elytron. 



Sides of prothorax spinose. Entire upper surface coarsely punctured, 



rugosely on the thorax, the elytral i)unctures distinctly and rather widely 



separated. 



Stenosphenus, Hald. 



Here belongs .S". not at us, Oliv., a rather elongate beetle of nearly 

 parallel form, the elytra slightly tapering behind. In colour it is black, 

 the head beneath and the entire prothorax except a large central dorsal 

 black spot, reddish. The punctuation is rather coarse but sparse and 

 each puncture gives rise to a gray hair, those of the elytra being 

 subseriate in arrangement. The antenuce are spinose, equalling or 

 exceeding the length of the body. Length, .35-.48 inch. Adults of this 

 species have been cut from hickory wood. 



Cyllene, Newm. 



The two Canadian species of this genus are difiicult to separate 

 since they agree almost exactly in colour. The numerous cross-bands of 

 yellowish (or rarely grayish) pubescence on the velvety black prothorax 

 and elytra give them a very characteristic appearance. Dr. Horn has 

 distinguished them as follows : — • 



Second joint of hind tarsi glabrous at middle, antennae of male 

 longer than the body. .42-89 in p ictus, Drury. 



Second joint of hind tarsi densely pubescent, antennce not longer 

 than the body. Presternum as wide as the coxal cavity. .40-.80 

 in rob'mice, Forst. 



The species differ in their times of emergence, //V/?/5 often appearing 

 on its principal food-plant (hickory) early in spring, or even in winter if 

 firewood of this sort be stored in a warm room. I have on one 

 occasion seen several specimens copulating and ovipositing on felled 

 honey-locust early in April at Iowa City. It also bores in butternut. C. 

 robinice infests living black locust, often ruining the trees. It appears in 

 late summer or early fall and may be found in great numbers on blossoms 

 of golden-rod, 



