Casey — A Revision of the American Paederini. 127 
segmental apex and with its anterior angle narrowly rounded. 
Length 6.7 mm.; width 1.15 mm. Middle States........-polita Grav. 
Body similar to the preceding but still stouter, parallel, scarcely so con- 
vex, bright rufo-testaceous throughout and shining, the abdomen 
blackish-piceous, paler andrufescent at apex; head similar but broader, 
the basal angles more broadly rounded, the eyes sensibly larger, at 
barely twice their own length from the base, the punctures almost as 
coarse but denser toward the sides and sparser medially, the antennae 
nearly similar but with the medial joints rather more elongate; pro- 
thorax smaller and shorter, distinctly narrower than the head, not ob- 
viously longer than wide, the sides feebly converging from apex to base 
and broadly arcuate throughout, the punctures moderately coarse and 
sparse, not more densely aggregated near the median smooth space; 
elytra rather more elongate, parallel, a fourth wider than the prothorax 
and nearly a third longer, less coarsely, rather more sparsely and still 
less serially punctured; abdomen broader, nearly as wide as the elytra, 
rather less coarsely but almost as closely punctulate. Male with the 
surface of the fifth and sixth ventrals nearly as in polita, having a nar- 
row glabrous median line throughout, but the fifth is less distinctly sin- 
uate toward the middle of the apex and the surface is feebly impressed 
along the glabrous area near the apex; the notch of the sixth is more 
equilateral, fully three-fifths as wide as the apex, distinctly wider than 
deep, with its anterior angle slightly blunt. Length 6.4mm.; width 1.18 
mm. Florida (Crescent City).............. ooseeecoeee- floridae 0. sp. 
11 — Body very depressed, the legs black with the tarsi paler; antennae very 
long and slender, with the medial joints much more than twice as long 
as wide; surface shining; head small, coarsely, very sparsely punctate 
laterally, broadly subimpunctate medially, rather wider than long, the 
sides nearly straight, feebly converging from the eyes to the basal 
angles, which are obtuse but only slightly rounded; eyes well devel- 
oped; antennae black, almost half as long as the body, scarcely per- 
ceptibly incrassate toward tip; prothorax much wider than the head, 
only slightly longer than wide, the sides feebly converging from the 
apex and very slightly arcuate, broadly arcuate toward base, the 
punctures fine but distinct, very sparse, narrowly more aggregated 
along the median smooth line; elytra but little longer than wide, 
parallel, a third wider and longer than the prothorax, the punctures 
fine, rather sparse, partially serial in arrangement; abdomen distinctly 
narrower than the elytra, finely and closely punctulate. Male with the 
fifth ventral wholly unmodified, the apex rectilinearly truncate through- 
out, the sixth evenly and rather strongly rounded at tip, with a small 
triangular and rather abruptly formed emargination, about a sixth as 
wide as the base of the segment and rather deeper than wide, with its 
anterior angle slightly blunt, the surface with a narrow and simple 
glabrous cylindric impression along the mediam line throughout, the 
edges of the impression obtusely rounded; female with the sixth ven- 
tral broadly angulate at tip. Length 6.5 mm.; width 1.18 mm. Cali- 
fornia (Lake and Siskiyou CoS.).....+ss+se+seeee++++ -Californica Lec. 
Body normally convex, the legs and antennae pale; antennae shorter, less 
slender and more incrassate, not longer than the head and prothorax, 
