Cryphalus subconcentralis Hopk.; The Subfamily Cryphalinse, U.S. Dept. 

 Agric, Office of Secy., Rep. 99, p. 40, 1915. 



Closely allied to picem Ratz. of Europe, with sparse long setae from the 

 elytral interspaces. Female: dark brown, length 1-8 mm.; only moderately 

 stout, narrowly rounded in front and behind; moderately shining; the front 

 roughly but not coarsely punctured to somewhat beyond the level of the 

 eyes, with a strong, transverse, shining, epistomal impression, and an anterior 

 median carina, the vertex and gense subopaque, finely reticulate, indistinctly 

 punctulate; the prowo^i^w with the cephalic margin narrowly rounded, with 

 two prominent, contiguous, median asperities supported by two smaller 

 asperities on each side of them (these marginal elevations vary greatly in 

 size and in number from 2 to 6), the rugose area reddish with the asperities 

 rather coarse, rather sparse and hardly concentric, subtending a caudal 

 angle of about 90°, the reddish colour extending towards the base 

 but the rugosities not caudad of the summit, the sides and caudal area very 

 finely punctured and granulate, with long hairs on the sides and in front; 

 the elytra with the sides parallel beyond the middle then narrowed to the 

 rather narrowly rounded apex; the striae hardly impressed but discernable, 

 the strial punctures round, close and shallow, the interspaces with minute, 

 densely placed punctures, only very feebly granulate, bearing minute scales, 

 and with a median row of sparse, long, erect hairs from coarser, evidently 

 granulate punctures, more numerous towards and upon the declivity. 



The type of this description is from Pseudotsuga taxifolia, Saanichton, 

 B.C. 



Host trees. — Douglas Fir, Grand Fir. 



Distribution. — Saanichton peninsula (Vancouver Island), British 

 Columbia coast, and southwards. 



Our species is doubtfully referred to subconcentralis; some individuals 

 appear to approach pubescens Hopk. which is described as disjiinct though 

 the confused pronotal rugosities. 



Cryphalus canadensis Chamberlain, ante page 87. 



" Length, 1 • 8 mm. ; width, • 8 mm. body oblong, elliptical, symmetrical; 

 brownish black, with the rugose area of the pronotum slightly reddish. 

 Pronotum five-sixths as long as broad, rounded on the sides behind, then 

 very strongly arcuately narrowed to the narrowly rounded front margin, 

 broadest one-third from the base, base slightly narrower than the base 

 of the elytra; six distinct teeth on the anterior margin of the pronotum, 

 three on each side; pronotum with prominent asperities in a V-shaped 

 mass, with the widest portion anteriorly and the apex near but not touching 

 the base line; the hairs of the pronotum not very long and recumbant towards 

 the posterior margin; the anterior edge of the pronotum with a fringe 

 of long rather heavy bristle-like hairs; disc of the pronotum everywhere 



PLATE 20. 

 IPID TUNNELS (Original). 



Fig. 1, Pseudohylesinus nebulosus Lee, Tunnels in Douglas fir, wood surface; one-third natural 

 size. 



Fig. 2, Leperisinus aculeatus Say, Tunnels in ash, wood surface; about one-third natural size. 



Fig. 3, Eccoptogaster piceoe Sw., Tunnels in white spruce, wood surface; about three-fourths 

 natural size. 



Fig. 4, Hylurgops pinifex Fitch, Tunnels in white pine bark, inner bark surface; about two- 

 thirds natural size. 



Fig. 5, Dryocoetes affaber Mannh., Tunnels in white spruce bark; much reduced. 



