490 PROCEEDINGS OF THE ACADEMY OF [DeC, 



oblique apical margin of the genital segment; pygofers extending for 

 more than half their length beyond the plates, estimating from the 

 ventral notch of the genital segments. Length 7 mm. 



Described from twelve examples taken by me at Hamburg and 

 Gowanda, New York; several taken af Quinze Lake, P. Q., by Mr. W. J. 

 Palmer, of Buffalo, and one strongly marked female taken at Como, 

 P. Q., by Mr. R. M. Moore. This our largest Cixius seems to be dis- 

 tinctively a northern form. Like the closely allied stigmatiis, pini 

 and coloepeum, it varies greatly in the extent of elytral maculation. 

 These species are very distinct in the characters of the male genitalia, 

 but it is difficult to so describe them that they may be readily recog- 

 nized. I feel tolerably certain of my determination of Say's stigmatus, 

 but have had to place the two species of Fitch more by size and general 

 appearance, and these can so stand until more definitely located by 

 comparison with the types, if they still exist. 

 Cixius stigmatus Say. 



In this species and coloepeum the male plates are not shorter than the 

 pygofers. In stigmatus the sides of the genital segment are short and 

 rounded, not oblique, the ventral notch broad and shallow, and the 

 expanded apex of the plates are broad and rounded. 



Cixius stigmatus seems to be more widely distributed than our other 

 species. I have taken it about Buffalo, New York, and have received 

 others from Rhode Island, and j\Ir. Palmer has taken it in numbers 

 along the trail from Temagami, Ontario, to Quinze Lake, Quebec. 

 Cizius pini Fitch. 



In this species as in basalis the male plates are much shorter than the 

 pygofers, bvit here they reach somewhat beyond their middle, recon- 

 ning from the ventral notch of the genital segment. The sides of this 

 segment are much more oblique than in basalis, and the expanded 

 apices of the plates are broader and more rounded and compressed 

 about the pygofers. This species I have taken at Buffalo, Hamburg, 

 Golden and Lake Placid, New York, and Denver, Colorado. 

 Cixius coloepeum Fitch. 



I have placed here a small species with more regularly maculated 

 elytra. At least they are so in the only specimens I have seen, but 

 doubtless this character is as variable as in the allied species. Here 

 the sides of the male genital segment are rounded, a little oblique, 

 with a broad shallow ventral notch. In all our species there is a small 

 median tooth at the apex of this ventral notch. In coloepeum the male- 

 plates are long, slender at base, expanded at apex in suborbicular disks 

 which just attain the apex of the pygofers. In this species, pini, and 



