NEW SPECIES OF BARK BEETLES—-BLACKMAN ps 
Pronotum about 1.2 times as long as wide, widest near base, pos- 
terior margin slightly arcuate, posterior angles rounded, sides nearly 
straight and subparallel on posterior two-thirds, weakly constricted 
in front of middle, broadly rounded in front, with margin armed with 
numerous serrations; summit elevated, distinctly, transversely im- 
pressed behind; anterior area with asperities fused to form four per- 
fectly regular, concentric ridges (including front margin) ; posterior 
area shining, punctures small, shallow, moderately sparse, interstices 
reticulate; median line not elevated, moderately narrow; hairs scanty 
and small, minute on disk. 
Elytra scarcely wider than pronotum and 1.75 times as long, 2.06 
times as long as wide; widest through anterior third, sides nearly 
straight, subparallel on anterior three-fourths, acuminate behind, with 
sutures slightly extended; surface moderately shining, strial punc- 
tures deep, moderately fine, in regular strial rows, only first striae 
impressed ; interspaces narrow, not convex, impunctate on disk except 
for a very few punctures near base and declivity; subglabrous. De- 
clivity moderately, rather shallowly sulcate; suture rather narrow, 
strongly elevated; with small, distinct granules, and with a few fine, 
moderately short hairs; punctures of first and second striae entirely 
obsolete; sulcus at each side, impunctate, shining; lateral convexities 
little higher than suture, distinctly granulate in third interspace, finely, 
moderately closely punctured, with fine, moderately short hairs. 
Male—Not quite so slender as female, about 3.16 times as long as 
wide; frons broadly impressed below, with median tubercle on epistoma, 
transversely carimate above, surface shining, finely punctured, less 
closely than in female; elytral declivity with pues slightly deeper. 
Type locality. —Mexico. 
Host.—Unknown. 
Type material—Holotype, allotype, and 48 paratypes, U.S.N.M. 
No. 55996. 
Intercepted at quarantine from unidentified crate wood. 
PITYOPHTHORUS COSTALIMAI, new species 
PLATE 22, FIGURE 34 
Female.—Reddish brown; 1.96 mm. long, 2.79 times as long as wide; 
allied to fortis Blackman and viridis Blackman but with declivital sulcus 
strongly punctured. 
Frons flattened on more than a semicircle extending from eye to eye, 
brightly shining, moderately finely and closely punctured, with fine 
hairs from most of area, with longer, coarser, incurved, golden-yellow 
hairs from periphery. Eye of moderate size, rather coarsely faceted, 
nearly half divided by a V-shaped emargination. Antenna (fig. 34) 
with club 1.28 times as long as wide, 1.43 times as long as funicle; first 
