Casey — A Revision of the American Paederini. 107 



rather narrow, parallel and elongate, much wider than the head, moder- 

 ately closely and coarsely punctured; elytra parallel, slightly elongate, 

 two-fifths wider and one-fifth longer than the prothorax in the male, 

 the punctures rather small but strong and close- set. Male with the 

 second ventral unmodified, the third narrowly and moderately im- 

 pressed along the middle, more strongly behind; fourth narrowly and 

 rather strongly impressed throughout, the fifth also strongly and less 

 narrowly, the impression transversely divided in the middle; sixth with 

 a broad and shallow cuspidiform emargination, much wider than deep, 

 the apical lobes very broadly rounded, the surface densely pubescent 

 in the region of the emargination; female differing but little from the 

 male, the antennae slightly thicker but equally elongate, the prothorax 

 relatively shorter. Length 6.0 mm. ; width 1.05 mm. Massachusetts to 

 Iowa rubripennis n. sp. (Fvl. MS. ) 



Body somewhat similar to the preceding in size and form, the prothorax 

 notably larger and broader; elytra pale piceo- rufous in color; head 

 slightly broader, finely, not densely punctate, the eyes well developed; 

 antennae still longer, equally slender, longer than the head and pro- 

 thorax, the medial joints somewhat more than twice as long as wide in 

 the male; prothorax broad, but slightly longer than wide, very much 

 wider than the head, parallel, the sides feebly arcuate, the angles 

 broadly rounded; punctures not very coarse and moderately close-set; 

 elytra slightly longer than wide, parallel, about a third wider and more 

 than a fourth longer than the prothorax; punctures rather coarse and 

 close-set. Male with the third ventral not distinctly impressed, the 

 fourth narrowly and rather strongly so along the middle, the fifth 

 less narrowly, deeply and subovally so throughout the length, the im- 

 pression faintly divided transversely at the middle; sixth with a narrow 

 very deep angular notch, much larger in size than that of pttnctulatus 

 and allies, fully twice as deep as wide, with its opening an eighth or 

 ninth as wide as the segmental apex, the notch rendered obfcure to 

 low amplification by reason of the dense obtruding pubescence; female 

 unknown. Length 6.7 mm.; width 1.2 mm. Indiana? Cab. Levette. 



callulus n. sp. 



8 — Form narrower and more parallel than usual, black, the prothorax and 

 elytra rufous, the latter clouded with blackish toward suture and base; 

 head orbicular, rather longer than wide, finely, very sparsely punctate, 

 closely so at the sides, the eyes moderate; antennae lung and very 

 slender, much longer than the head and prothorax, the medial joints 

 distinctly more than twice as long as wide; prothorax oblong, distinctly 

 wider than the head, a fifth or sixth longer thin wide, the punctures 

 rather coarse and uneven, not very close-set; elytra quadrate, a fourth 

 wider but only very slightly longer than the prothorax, rather coarsely 

 unevenly and moderately closely punctate. Male with the fourth and 

 fifth ventrals narrowly and just visibly flattened along the middle, not 

 impressed, the sixth with a very minute sharply angulate median notch, 

 much deeper than wide and narrower than in punctulatus, almost con- 

 cealed by the dense vestiture clothing the surface toward the notch; 

 female unknown. Length 7.5 mm.; width 1.15 mm. Iowa. 



seniirnbern. sp. 



