Casey — A Revision of the American Paederini. 139 



prothorax obviously elongate, much wider than the head, the sides 

 parallel and straight, the basal angles rather more rounded than the 

 apical, the punctures flue, very sparse, larger and more close-set in the 

 unimpressed series limiting the medial smooth space; elytra elongate, 

 a fourth to fifth wider and a third to fourth longer than the prothorax, 

 subparallel at the sides, the punctures fine and not close-set, arranged 

 in unimpressed series; abdomen distinctly narrower than the elytra, 

 densely punctulate and dull. Male with a very small, extremely shallow 

 sinus at the middle of the apex of the fifth ventral, the sixth strongly 

 impressed along the middle, the impression rather abruptly limited 

 laterally, gradually narrowing from the apex and disappearing near basal 

 fourth, the apex with a large deep and abruptly formed triangular notch, 

 two-fifths as wide as the apex and fully one-half deeper than wide, with 

 its angle narrowly rounded, the notch wholly within the impression, 

 which extends narrowing along its sides to the apex, the apical lobes 

 narrowly rounded; female with the sixth ventral obtusely rounded at 

 tip. Length 4.5 mm.; width 0.75 mm. Mississippi (Vicksburg). 



modestan. sp. 



10 — Eyes of normal size and prominence, situated at distinctly less than 



twice their own length from the base 11 



Eyes notably smaller than usual, situated at about twice their own length 

 from the base 12 



11 — Body rather slender, the head black, the prothorax pale testaceous, 



the elytra pale flavo-testaceous, with a small piceous cloud at the 

 scutellum; abdomen blackish, rufescent in apical third; legs and an- 

 tennae pale; head rather wider than long, very sparsely punctate, the 

 sides parallel; angles only moderately rounded; antennae rather stout, 

 moderately incrassate distally, extending to basal third of the elytra, the 

 medial joints less than one-half longer than wide; prothorax oblong- 

 elongate, parallel, just visibly wider than the head, the punctures small 

 but distinct, sparse, somewhat larger and close-set in the series bound- 

 ing the medial smooth area; elytra evidently longer than wide, the sides 

 diverging throughout and straight, fully two-fifths wider and longer 

 than the prothorax, finely, very sparsely punctate, the punctures 

 arranged in unimpressed series; abdomen rather wide, but little nar- 

 rower than the elytra, minutely, closely punctulate but only moderately 

 dull in lustre. Male unknown; female with the sixth ventral narrowly 

 and strongly rounded at tip. Length 4.2 mm. ; width 0.7 mm. New 



York (near the city) fragilis n. sp. 



Body somewhat more slender; head obscure testaceous to piceous-black, 

 the prothorax aDd elytra pale flavo-testaceous, the latter with a rounded 

 piceous cloud about the scutellum; abdomen fuscous, paler toward tip, 

 the legs and antennae pale ; head as in fragilis but narrower and as long as 

 wide, the basal angles still more narrowly rounded ; antennae longer 

 and more slender, extending fully to the middle of the elytra, only very 

 feebly incrassate distally, the medial joints rather more than one-half 

 longer than wide; prothorax narrower and relatively more elongate, 

 subparallel and straight at the sides, only very slightly wider than the 

 head, punctured as in fragilis; elytra similar in form though relatively 

 larger, more strongly and closely punctate, nearly one-half wider and 



