212 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 
asperities; summit high, slightly in front of middle, with a distinct, 
broad, transverse impression posterior to it; posterior area rather 
weakly shining, surface of interstices slightly reticulate, punctures 
deep, of moderate size, rather sparse; median line wide, impunctate, — 
scarcely elevated; disk subglabrous, sides with a few very fine, short 
hairs. 
Elytra slightly wider than pronotum and about 1.53 times as long, 
1.65 times as long as wide; sides nearly straight and subparallel on 
anterior two-thirds, narrowly rounded behind; surface moderately 
shining, reticulate, strial punctures moderately small, in nearly regular 
rows, only first striae impressed; interspaces scarcely rugulose, im- 
punctate on disk except near declivity, sides with a few interstitial punc- 
tures, bearing short, fine hairs. Declivity deeply sulcate, suture nar- 
row above, somewhat widened near apex, obsoletely subgranulate, only 
feebly elevated; punctures of first and second striae obsolete; lateral 
elevations moderately high, higher than suture, with a row of small, 
inconspicuous granules in third interspace; vestiture of fine, erect, 
moderately numerous hairs on third to ninth interspaces. 
Male.—Similar to female in size and proportions; frons convex, 
strongly, roughly punctured, with a rather weak median carina which 
may be nearly obliterated by the rough punctures; mandible without the 
conspicuous fringe of hairs as in female, but with a very small tuft 
of hairs near ventral border; elytral declivity much more deeply sulcate, 
with sulci slightly narrowed by an in-pushing of lateral convexities. 
Type locality—Jalapa, Veracruz, Mexico. 
Host—Pinus patula. 
Type material—Holotype, allotype, and nine paratypes, U.S.N.M. 
No. 55986. 
The holotype, allotype, and nine paratypes were collected from Pinus 
patula near Jalapa, Mexico, by Donald DeLeon, February 9, 1936. 
PITYOPHTHORUS RUDIS, new species 
PLATE 23, FIGURE 46 
Female—Dark reddish brown, 2.46-2.74 mm. long; holotype 2.60 
mm. long, 2.71 times as long as wide; resembling crassus Blackman 
in appearance, but more slender, more regularly punctured on elytra 
and with notably longer declivital setae. 
Frons flattened on a semicircular area extending from eye to eye, 
margined at periphery, surface moderately shining, with moderately 
spaced, deep, rather fine punctures, hairs fine, rather long, those at 
periphery longer and incurved. Mandible with basal fringe of setae 
in two groups. Eye with moderate facets, half divided by a wide, 
deep emargination. Antenna (fig. 46) broadly oval, equally wide 
