Casey — A Revision of the American Paederini. 109 
Antennae in the male less elongate, about equally slender, the medial joints 
not quite twice as long as wide. Body less stout, black, the elytra 
slightly piceous, the pale spot at the outer angles broader and rather 
less abruptly defined; legs very pale, the antennae fuscous; head nearly 
as in the preceding species but smaller and narrower, less finely punc- 
tate and more evenly semicircular at the base; antennae scarcely 
longer than the head and prothorax, the latter narrower and more dis- 
tinctly elongate, much wider than the head, the sides parallel and 
distinct!y arcuate, the punctures equally strong and coarse and rather 
less sparse; elytra slightly elongate, parallel, similarly, though less 
sparsely, punctate, two-fifths wider and a fourth longer than the protho- 
rax; abdomen but little narrower than the elytra. Male with the second 
and third ventrals unmodified, the fourth very feebly impressed toward 
apex only, the fifth equally feebly impressed throughout the length, the 
apex feebly sinuate at the middle, the sixth with a very narrow and 
acutely angulate notch, much deeper than wide, not more than a twelfth 
as wide as the apex, the latter inwardly and anteriorly oblique and 
truncate at each side of the notch and not transverse as in angularis, the 
surface as in that species; female nearly similar to the male, except that 
the sides of the head are obviously converging behind the eyes. Length 
6.4mm.; width 1.15 mm. Massachusetts (locality unknown). 
furvulus n. sp. 
12— Median smooth line of the pronotum normally wide and distinct. 
Body rather small in size and of less stout form, deep black, the pro- 
thorax and elytra with a scarcely discernible piceous tinge, the outer 
angles of the latter pale; head rather finely and sparsely punctate, the 
eyes rather smaller and more prominent than in the two following, the 
sides behind them strongly converging and nearly straight, then broadly, 
circularly rounded at the base; prothorax oblong, parallel, rather 
distinctly elongate, with the sides broadly arcuate, only very slightly 
wider than the head, the punctures notably coarse, deep and moder: 
ately sparse; elytra slightly elongate, parallel, a third wider and a fifth 
longer than the prothorax, less coarsely but rather strongly and about 
equally sparsely punctate, somewhat rugose by oblique reflection as 
usual; abdomen as wide as the elytra. Male not known; female with 
the sixth ventral briefly lobed, the lobe arcuately truncate at tip; surface 
not at all impressed. Length 6.0 mm.; width 1.0mm. Pennsylvania 
(near Philadelphia)......s.sceececcessecseseeccoeseeeMiPVESCENS N. SDP. 
Median smooth line of the pronotum narrow and generally subeffaced; 
species larger and stouter, black, sometimes with a feebly piceous 
TINGE... ccccccccccverscccescccdet veces sccctecsehovececes toseevacesseelS 
13— Body moderately stout, the pale spot at the outer elytral angles large; 
head narrow, longer than wide, minutely, rather closely punctate 
laterally, subimpunctate toward the middle, the sides behind the eyes 
rapidly converging and nearly straight almost to the base, which is 
arcuately subtruncate; antennae slender, much longer than the head and 
prothorax, the medial joints more than twice as long as wide in the 
male; prothorax moderately broad, distinctly wider than the head and 
longer than wide, the sides parallel and broadly arcuate, the punctures 
rather coarse, deep and close-set, gradually becoming fine and sparse 
