220 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 
Elytra wider than pronotum and 1.76 times as long, about 1.98 times 
as long as wide; sides nearly straight and subparallel on anterior 
three-fourths, then narrowed to the very strongly acuminate apex, 
with sutural angles produced; surface moderately shining, faintly alu- 
taceous; strial punctures deep, coarse, and close, in nearly regular 
strial rows, first striae distinctly impressed, others not at all or very 
faintly impressed ; interspaces rather narrow, with only a few punc- 
tures except near declivity; disk nearly glabrous, except in sutural 
interspaces; sides with a few small hairs. Declivity very deeply, 
rather broadly sulcate, with sulcus subopaque, suture moderately wide, | 
strongly elevated, more strongly so behind, distinctly granulate and 
with rather long setae; punctures of first and second striae obsolete; 
lateral elevations rather strongly elevated, with a continuous row of | 
strong granules in third interspace, forming summit of elevation at 
each side; finely punctured and with numerous small granules on 
lateral interspaces; with numerous rather long erect setae. 
Male—Slightly stouter (about 3.01 times as long as wide) and 
more coarsely and roughly punctured; frons transversely impressed 
below, with an elevated, arcuate, transverse carina above, more 
coarsely and roughly punctured than in female, with smaller incon- 
spicuous hairs; elytral disk notably more coarsely punctured, with 
interspaces narrower and strial rows less regular; declivity with sulci 
deeper and both suture and lateral elevations slightly higher and with 
coarser granules. 
Type locality —Rio Frio, Puebla, Mexico. 
Host.—Pinus leiophylla. 
Type material—Holotype, allotype, and five paratypes, U.S.N.M. 
No. 55993. 
The type series was collected from Pinus leiophylla, near Rio Frio, 
Puebla, February 10, 1936, by Donald DeLeon. 
PITYOPHTHORUS CORONARIUS, new species 
Female.—Reddish brown, 1.5-1.88 mm. long; holotype 1.79 mm. 
long, 2.95 times as long as wide, with ends of elytra acuminate. 
Frons flattened on more than a semicircle, extending nearly from 
eye to eye, with an indented peripheral margin; very finely and 
densely punctured, with very fine hairs of moderate length covering 
most of surface, and with a margin of coarser, longer, incurved hairs 
at sides and above. Eye with moderate facets, about one-fourth 
divided by a broad, shallow emargination. Antennal club rather 
broadly oval, much longer than funicle, first 2 sutures partly septate, 
weakly arcuate, third suture strongly arcuate, not septate. 
Pronotum about 1.15 times as long as wide, widest near base, poste- 
rior margin weakly arcuate, posterior angles scarcely rounded, sides 
