222 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 | 
oval, much longer than funicle, first 2 sutures partly septate, nearly 
straight, third suture arcuate, not septate. 
Pronotum about 1.17 times as long as wide, widest near base, pos- 
terior margin weakly arcuate, posterior angles rounded, sides nearly 
straight and subparallel, on posterior two-thirds, slightly constricted 
in front of middle, broadly rounded in front, with anterior margin 
armed with numerous small, sharp serrations; summit moderate, 
weakly impressed behind; anterior area with asperities fused to form 
4 perfectly regular, concentric rows; posterior area subopaque, densely 
reticulate, with very fine, very shallow, sparse, rather indistinct punc- 
tures, median line not elevated, moderately narrow; disk apparently 
glabrous. 
Elytra slightly wider than pronotum and 1.65 times as long, about 
1.68 times as long as wide; sides subparallel on anterior two-thirds, 
then narrowed and extended into an acuminate apex; surface weakly 
shining; strial punctures not deep, close, fine, in nearly regular rows, 
only first row impressed; interspaces rather narrow, not convex, 
finely rugulose, impunctate on disk; appearing glabrous. Declivity 
somewhat sloping, suture elevated and widened posteriorly, with a 
few minute granules and fine, rather short, erect hairs; punctures 
of first striae obsolete, those of second obsolescent, second interspace 
forming a rather deep sulcus each side of suture, subshining, reticulate, 
impunctate; lateral elevations high, with a row of very small granules 
along their summits in third interspaces; sides of declivity finely punc- 
tured, with rather fine, short, erect hairs. 
Male.—Slightly stouter, widest through pronotum, the sides of which 
are arcuate; frons transversely flattened below, arcuately elevated 
above, with punctures not so fine and close as in female, with a few 
short hairs; declivity with granules and hairs better developed than 
in female. 
Type locality—Mexico (taken at quarantine). 
Host—Unknown. 
Type material—Holotype, allotype, and one paratype, U.S.N.M. No. 
55995. 
PITYOPHTHORUS ATTENUATUS, new species 
Female.—Reddish brown ; holotype 1.62 mm. long, 3.23 times as long 
as wide, with elytra acuminate and pronotal asperities fused to form 
regular concentric ridges. 
Frons flattened on an approximate semicircle, occupying three- 
fourths of distance between eyes, feebly concave at center, very finely 
and closely punctured, with fine hairs of moderate, nearly uniform 
length. Eye with moderate facets, one-third divided by a rather 
wide V-shaped emargination. Antennal club rather broad oval, con- 
siderably longer than funicle, sutures arcuate. 
