858 FIFTH REPOET OF THE ENTOMOLOGICAL COMMISSION. 



2. The pine timber beetle. 

 Tomicus pint Say. 



This insect, already described on page 168, is common in the timber 

 region of the Eocky Mountains, boring irregularly into the inner bark 

 of Abies menziesii. The burrows are like those made by the same insect 

 in the white pines of New England. The main burrows of the mines 

 observed in Colorado were .08 inch in diameter. 



3. The common large red timber beetle. 

 Polygraphus rufipennis Kirby. 



This beetle, so common in Maine and British America, is also common 

 in the coniferous trees of the mountains of Colorado, where I have met 

 with it at Blackhawk and at Mauitou. (See p. 721.) 

 4. The large timber beetle. 

 Dendroctonus terebrans (Olivier). 

 This common eastern form, which occurs from Maine to Georgia, and 

 in California and Oregon, also probably infests the pine and spruce of 

 elevated regions. I have a specimen from Tacoma, Wash., on Puget 

 Sound, a lumbering town, which was identified by Dr. G. H. Horn. 



(See p. 721.) 



5. The western spruce longicorn borer. 



Anthojihilax mirificus Bland. 



Order Coleoptera ; family Cerambycid.e. 



This beautiful beetle I found June 16, 1877, under the bark of a large 



fir-like spruce, probably Abies menziesii, on the side of a high hill near 



Fig. 292.—Anthophilax mirificus. Smith del. 



Virginia City, Mont. The small male was sexually united with the 

 black female, and there were several other females near by. From 



