H. C. FALL. 27 



greater width and convexity of elytral intervals than in the 

 more northern and eastern specimens. 



The species is known to me from Kineo, Maine ; White 

 Mountains, New Hampshire ; Brookline, Mass. ; Port Huron, 

 Mich.; "Canada;" Porvenir, New Mexico; British Columbia, 

 and Lake Tahoe, California. Ulke records it in his District 

 of Columbia List as occurring on pines. The species re- 

 ferred to by Bowditch in his Mt. Washington List as " n. sp. 

 near hispoides,'" and that taken by Schwarz at Garland and 

 Veta Pass, Colorado, and listed by Le Conte as " sp. near 

 hispoides" will, I suspect, prove to be no more than slight 

 variations of this wide spread species. 



M. perforatus Horn. 



A well known species, easily recognized by its very coarse, 

 deep, dense sculpture, with unusually narrow elytral inter- 

 spaces. The antennae are said by Horn to be median, but 

 are really post-median in both sexes, as in all the species of 

 this group. 



It occurs all the way from New Hampshire to Georgia 

 (type locality). There is a Michigan specimen in the Horn 

 Collection, and it is recorded in Wickham's Iowa List. 



M. lecontei Horn. 



Several distinct species are included under this name in 

 collections, those in my own collection being easily differenti- 

 able by the characters in the preceding table. Of these the 

 true lecontei is much the largest, specimens under 4 mm. in 

 length very rarely occurring, while this size is seldom if ever 

 attained by any of the allied species. Lecontei is rather com- 

 mon in the Rocky Mountains and westward, but does not, so 

 far as I know, cross the plains to the east. Horn in his de- 

 scription says " Kansas to Oregon and California," and it 

 would be interesting just now to know the precise locality 

 and identity of his Kansas specimens. 



Aside from the very obvious differences in size and color, 

 two other characters may be mentioned which separate le- 

 contei from other species of this group. The second funicu- 

 lar joint is unusually elongate, being fully twice as long as 



TRANS. AM. ENT. SOC. , XXXIX. 



