NEW SPECIES OF BARK BEETLES—BLACKMAN 181 
In typical Neopityophthorus the pronotum has the summit more or 
less elevated, with a more or less distinct transverse impression behind 
it. Both these characters are in some species indistinctly shown, as 
in WV. schedli, new species, and eaquisitus, new species, from Mexico 
and in teres, new species, from Panama Canal Zone. The best char- 
acter in this group is the absence of asperities or of elevated lateral 
margins in connection with the punctures on the sides of the posterior 
half of the pronotum. 
Among the true Veodryocoetes there are several small species that 
are very closely related to the type species hymenaeae Eggers. All 
these are less than 2 mm. in length and are similar in habitus, and 
all live in various tropical seeds. Differences in the structure and 
vestiture of the frons in both sexes furnish the best diagnostic char- 
acters in separating such species as hymenaeae Eggers, amazonicus 
Eggers, caribaeus, new species, guianae, new species, hwmilis, new 
species, and hood, new species. Other differences are present, how- 
ever, and are brought out in the descriptions. 
In the following treatment of the species those belonging to WVeo- 
dryocoetes s. str. are mucunae, new species, hubbardi, new species, 
columbianus Schedl, tabogae, new species, caribaeus, new species, 
guianae, new species, hoodi, new species, humilis, new species, hostilis, 
new species, and teres, new species; while insularis (Eggers), schedli, 
new species, cvguisitus, new species, tenuis, new species, lenis, new 
species, cubensis, new species, busck?, new species, and pallidus, new 
species, belong to the subgenus Neopityophthorus Schedl. 
NEODRYOCOETES MUCUNAE, new species 
PLATE 20, Ficgure 5 
Female.—Light reddish brown, with elytra darker reddish brown, 
2.26-2.63 mm. long; holotype 2.46 mm. long, 2.38 times as long as 
wide; allied to obseurus Eggers and hubbardi, new species. 
Frons somewhat flattened below on a semicircular area, opaque to 
subopaque, very finely and densely punctured, with fine, rather short 
hairs (shorter than in hubbardi); median carina fine but distinctly 
elevated; upper frons and vertex finely reticulate, subopaque, with 
sparse, rather fine punctures. Eye large, coarsely faceted, half 
divided by a deep, rather wide emargination. Antenna (fig. 5) with 
club broadly obovate, 1.23 times as long as wide, 1.37 times as long 
as funicle, first suture notched at sides, setose, arcuately, incompletely 
septate ; second and third sutures marked by setae. 
Pronotum 1.06 times as long as wide; shape very similar to that of 
hubbardi but anterior margin with less distinct serrations; dorsal 
contour evenly arcuate; anterior area with irregularly concentric rows 
of broad, low asperities; posterior area similar to that of hudbardi 
