OF WASHINGTON. 73 
9 Type. No. 7510 U. S. Nat. Mus., Michoacan, Mexico, 
in pine, Prof. A. L Herrera, collector, bearing his number 
1047. 
This is allied to the common Eastern United States species 
G. materiarius Fitch, which infests the wood of pines from 
Maine to Florida and Texas, and Picea from Maine to the 
higher mountains of North Carolina. The Mexican species is 
distinct from materiarius by the broad, smooth, shining frontal 
space and the much more distinctly produced apex of the 
elytra. 
Gnathotrichus sulcatus Lee. One specimen, Chaleo, Mexico, 
October, 1903, received from Prof. Herrera under his number 
872, and another specimen from Michoacan, in pine, under 
his number 1047. I fail to find characters of sufficient value 
to separate these specimens from G. sulcatus Lee., which I 
have found to be a good species and not the male of G. retusus 
Lee., as considered by LeConte (Proc. Amer. Philos. Soc. 
XV, p. 350). G. sulcatus is a common and widely distributed 
species in the Pacific Coast and Rocky Mountain regions. I 
have found it in Pinus, Tsuga, Pseudotsuga, Abies, Picea, 
Thuja, and Sequoia. Blandford evidently had specimens of 
this species, together with (as he himself suggests) representa- 
tives of one or two other species when he drew up his descrip- 
tions of G. consentaneus. 
Pityophthorus chaleoensis n. sp. Female type, length 2.6 mm.; elongate* 
cylindrical, dark, ferruginous; sides of prothorax and legs lighter. Head 
broad, flat, rather coarsely, densely, rugosely punctured and with epistoma- 
like elevation on the anterior margin; the face with a few scattering 
hairs and the margin fringed with long incurved yellow ones; eyes 'emar- 
ginate; antennal club small and sutures impressed on sides and face. 
Prothorax one-half as long as elytra; sides nearly parallel to anterior 
third, then narrowed to margin which is broadly rounded; nearly smooth; 
anterior rugosities confused, extending towards side margin; posterior 
half shining, with median smooth longitudinal space; punctures coarser 
and denser towards dorsal space, fine and sparse on sides; pubescence 
fine, sparse, recumbent. Elytra twice as long as prothorax; pubescence 
fine and sparse towards base, denser and longer on declivity; strial punc- 
tures in approximate rows on sides, confused towards suture, side margin 
and declivity; second interspace broadly, deeply impressed; the sutural 
interspaces elevated and roughened with a row of numerous acute 
granules; the third interspace rather strongly elevated and armed with 
a row of six or seven small, acute piliferous, granules; striae one and 
two obscure. 
9 Type. No. 7511 U. S. Nat. Mus., Chaleo, Mexico, 
