208 Trans. Acad. Sct. of St. Louis. 
of the usual form, very minutely, densely punctulate and rather 
strongly, more sparsely so beneath; antennae obviously shorter than 
the head and prothorax, the latter slightly longer than wide and usually 
but little narrower than the head, the sides subparallel or very feebly 
convergent from the obtuse and slightly rounded angles at apical fourth 
or fifth, the punctures less dense than those of the head; elytra not or 
but very slightly longer than wide, much wider than the head, parallel, 
about a fourth wider but only just visibly longer than the prothorax; 
gular sutures well separated. Length 2.4 mm.; width 0.4mm. Rhode 
Island and New York (Hudson Valley) ...-.....-+++++++--.exiguus Er. 
Body resembling exiguus in coloration but smaller and rather more slender, 
alutaceous as usual, the punctures of the under surface of the head 
smaller and feebler; head, antennae and prothorax nearly similar, the 
elytra however relatively much narrower and only just visibly wider 
than the head, parallel, quite distinctly longer than wide, scarcely 
more than a sixth wider and but slightly longer than the prothorax, 
sculptured as usual. Length 2.3 mm.; width 0.85 mm. North Caro- 
lina (Asheville) ...essecresccccccccecrcececeee coveeesMacilentus 1. sp. 
Body somewhat resembling the two preceding in form and sculpture but 
with the prothorax relatively narrower and more elongate; color pale 
flavo-testaceous throughout, the head but slightly, and the abdomen 
not at all, darker; head well developed, of the usual form; prothorax 
much narrower than the head and more shining, fully a fifth longer 
than wide, the sides behind the obtuse and rather broadly rounded 
angles at about apical fifth subparallel; elytra parallel, only very slightly 
longer than wide, but slightly though obviously wider than the head, 
fully a third wider but only just visibly longer than the prothorax. 
Male unknown. Length 2.3 mm.; width 0.38 mm. New York (Hud- 
SOD VAlley) «seve sececee: cece cece scccvscecccccecssescesGegener 0. Sp. 
16— Coloration as in exiguus; form parallel, the lustre alutaceous, the 
pronotum more shining as usual; head distinctly elongate, the eyes 
larger than usual and situated at obviously less than twice their own 
length from the base; prothorax much narrower than the head and 
distinctly elongate, the sides very feebly converging behind the obtusely 
rounded angles at apical fifth and nearly straight; elytra obviously 
though not greatly wider than the head, nearly a fifth longer than wide, 
parallel, about a fourth wider and slightly longer than the prothorax; 
gular sutures well separated as in the three preceding species. Male 
unknown. Length 1.8 mm.; width0.3 mm. North Carolina (Asheville). 
angustissimus n. sp. 
17 — Slender, parallel, rufo-testaceous, the elytra and abdomen fuscous, 
the former with the suture narrowly and indefinitely paler; antennae 
and legs pale; lustre alutaceous, the pronotum more shining; head 
‘slightly longer than wide, of the usual form, densely punctulate; pro- 
thorax narrower than the head, a little longer than wide, with the sides 
behind the strongly obtuse and rounded subapical angles parallel; 
elytra about a fourth longer than wide, distinctly wider and slightly 
longer than the prothorax, sculptured as usual. Sixth ventral in the 
male rather deeply, triangularly emarginate, the emargination as wide 
