THE CANADIAN ENTOMOLOGIST 323 



Cryphalus grandis, n. sp. 



Length 1.8 mm.; width 0.8 mm. 



Body size and shape of C. amahilis; colour black. Pronotum 

 with four teeth on the anterior margin, two central teeth large, 

 rounded, lateral ones narrower, smaller. Dorsal surface rather 

 densely clothed with pale hairs. First two lines of callosities on 

 the pronotum regular, posterior portion more or less confused. 

 The entire dorsal surface presents a granulate appearance, a con- 

 dition not noted in any other species. Striae faintly evident, 

 especially laterally; elytra sparsely clothed with long, bristle-like 

 hairs. Faint transverse rugulaj on the elytra. Elytra clothed 

 with fine hairs (not scale-like) and finely obscurely punctata. 

 Legs amber coloured, antennal club dark. Ventral surface clothe 1 

 with recumbant, yellowish hairs. Lateral margin of the elytri 

 shows a very broad emargination near the middle, and a distinct 

 ridge extends from the humeri to the posterior lateral margin of 

 the elytra. (Not constant.) 



A large number of specimens from Abies grandis near Corvallis, 

 Oregon, collected by the author. Hairs on pronotum dense, 

 medium long, recumbent towat'd anterior margin; bristle-like hairs 

 of dorsal surface very long. 

 Crypturgus, undes. sp. 



A number of these minute insects were taken from a de .:l 

 fir (Abies lasiocarpa) near Sumpter, Oregon, July 20, 1914. In 

 company with other bark beetles, they were working in the dea 1 

 bark near the top of the tree. 

 Dendroctonus valens Lee. 



Rather common throughout the pine regions of the State. 

 Especially abundant in Pinus ponderosa in Eastern and Central 

 Oregon. Occasionally found at the base of the larger lodgepole 

 pines {P. contorta). Noted at Corvallis, Hood River, Bend, 

 Crescent, Sumpter, Sparta, Ashland and on the Klamath Indian 

 Reservation. The habits of the Dendroctonus beetles are tco 

 well known to deserve comment here. 

 Dendroctonus monticolce Hopk. 



Found throughout the State in Pinus ponderosa, contorla, 

 monticola and lambertiana, wherever these trees occur. It has 

 caused heavy losses in Northeastern, Central and Southern Oregon. 



