38 THE CANADIAN ENTOMOLOGIST. 



united) spots near apex arranged in the arc of a circle. These 

 markings may vary in either direction, so that specimens may be 

 nearly black or almost entirely pale, .28-.36 in . . symmetricus ,Y{dAd. 

 AA. Lateral spine more slender, less close to base, tip recurved. Elytra 

 fasciate with black, 

 b. Post-median fascia incomplete, broadly interrupted at suture. 



.24-. 36 in sigjiatus, Lee. 



bb. Post-median fascia entire, not interrupted, broad. 



Fasciae oblique on each elytron, apex not black. .18-. 24 



in querci, Fitch. 



Fasciae transverse, apex also black. .12-. 16 in . .facetus, Say. 



A few notes have been published on food habits : Z. signatus has 



been found on dead sumach twigs, L. querci on oak, butternut and 



XvicVoxy , L. facetus o\\ juniper. The last has also been bred from beech 



and hickory. 



HVPERPLATVS, Hald. 



H. aspersus, Say, and H. maculatus, Hald., occur in Canada, 

 according to the Society List. They are considered by Mr. Leng as 

 races of one species, which should be called by the former name. The 

 ground colour appears to be of a brownish or bluish-gray, the upper 

 surface maculate with numerous small roundish black spots. For 

 convenience the characters on which the names are based are copied 

 from Dr. Horn. 



Elytra twice as long as wide at base. Antenni« in both sexes at 

 least twice as long as the body aspersus, Say. 



Elytra broader, not twice as long as wide. Antennae not reaching 

 twice the length of the body in either sex niaculatus, Hald. 



Length, .14-. 26 inch. Breeds in poplars and apple twigs. 



AcANTHOCiNUS, Steph. 



Only one species occurs with us, A. obsoletus, Oliv., found about 

 pine lumber. It is a grayish beetle, .40-.60 in. long, the elytra coarsely, 

 not closely, punctured, with a rather indistinct raised line (costa) on each. 

 The ornamentation consists of a number of small dark blotches and three 

 undulated elytral bands, which are often more or less broken up. The 

 resemblance to some beetles of neighbouring genera is quite close, so 

 that careful reference should be ma4e to the characters given in the 

 preceding table, 



