Casey — A Revision of the American Paederini. 83 
the head, not more than a sixth longer than wide, the sides not distinctly 
converging and very feebly arcuate, the angles rounded as usual; elytra 
large, rather longer than wide, somewhat longer and wider than the 
prothorax, parallel; abdomen parallel, slightly narrower than the elytra; 
legs rather long and only moderately stout. Male with the fifth ventral 
entirely unmodified, the sixth narrowly and very feebly impressed in the 
middle in nearly basal two-thirds, thence longitudinally and obtusely 
tumid along the median line to the apex, which is truncate, with a very 
minute, simple and shallow median sinus, five or six times as wide as 
deep; female slightly more slender than the male. Length 9.5 mm.; 
width 1.5mm. New York (Hudson Valley).......-..deceptivum n. sp. 
Smaller species, the legs and antennae dark piceo-rufous, the surface 
shining, the head and pronotum coarsely deeply and moderately sparsely 
punctate, the punctures sparser toward the middle of the head, with the 
smooth line of the pronotum as usual, those of the elytra slightly smaller 
and rather sparser, not very definitely lineate, of the abdomen minute 
and very close-set; head well developed, a little wider than the elytra 
in the male, subequal to the latter in the female, wider near the base 
than at the eyes, the angles moderately rounded; gular sutures less 
approximate; prothorax rather small, distinctly longer than wide and 
much narrower than the head, the angles somewhat distinct, the sides 
feebly converging and nearly straight; elytra nearly a fourth longer 
than wide, much wider and longer than the prothorax, parallel and 
nearly straight at the sides; abdomen somewhat narrower than the 
elytra, parallel. Male with the fifth ventral scarcely visibly flattened 
along the median line, the sixth rather widely but very feebly im- 
pressed throughout in continuation, the apex with a very broad shallow 
sinus in almost median half and fully four times as wide as deep, the 
bottom of the sinus transverse and with two very feeble rounded lobes, 
having an intermediate minute and very feeble sinus; female with the 
sixth ventral very broadly, obtusely lobed at apex. Length 7.0 mm.; 
width 1.15 mm. Massachusetts, — Mr. F. Blanchard — and Michigan 
(Detroit)....... deecseve ¢ acencceecs ceereseceeceeeesSPiSSICOrNe 0. Sp. 
8 — Form very stout, parallel, the elytra scarcely as long as wide; legs 
rather short and very stout; head large, equal in width to the elytra 
and very slightly wider than the prothorax, formed as usual, the coarse 
punctures very remote except toward the sides; prothorax as usual, 
large, only slightly longer than wide, the punctures coarse, deep and 
sparse, the sides feebly converging; elytra a little shorter and slightly 
wider than the prothorax, coarsely and rather confusedly punctate ; abdo- 
men very broad, as wide as the elytra, parallel, finely, rather densely 
punctulate. Malewith the fifth ventral wholly unmodified, the sixth with 
a narrow and very feeble impression on the median line in more than basal 
half, the surface very broadly and just visibly swollen thence to the 
rectilinearly truncate and wholly unmodified apex, the pubescence a little: 
denser at each side of the swelling; female slightly narrower than the: 
male, with the sixth segment feebly and broadly lobed at tip. Length 
9.0mm.; width1.6mm. Massachusetts,— Mr. F. Blanchard, New York 
(Long Island) and New Jersey (Orange)............nigrolucens n. sp. 
Form narrower and more elongate, the elytra fully as long as the prothorax, 
