Casey — A Revision of the American Paederini. 173 



legs and antennae pale. Head distinctly wider than the prothorax 

 in the female, the eyes only moderately developed and rather smaller 

 than in the female of pallescens ; prothorax relatively smaller, scarcely 

 more than just visibly wider than long, subparallel and nearly straight 

 at the sides, the angles rounded; elytra relatively larger, somewhat 

 longer than wide, fully a third wider and three -fifths longer than the 

 prothorax, not paler in color than the latter; under surface of the head 

 rather flat and somewhat strongly and closely punctate, the gular 

 sutures fine, scarcely at all impressed, nearly straight and just visibly 

 converging to a short distance from the base, the intersutural region 

 paler in color. Length 4.0 mm.; width 0.72 mm. California (Sta. Cruz 

 Co.) conforme n. sp. 



21 — Body slender, black, the anterior parts with a slight piceous tinge, 

 scarcely at all paler on the elytra; head and prothorax polished, finely, 

 sparsely punctate, the former rather wider than long, only slightly wider 

 than the prothorax, parallel and nearly straight at the sides behind the 

 unusually small eyes, the basal angles moderately broadly rounded; 

 prothorax as long as wide, the apex oblique at each side of the neck, 

 the apical angles broadly obtuse; elytra quadrate, almost one- half 

 wider and longer than the prothorax; under surface of the head broadly 

 convex, rather strongly but sparsely punctate, the gular sutures very 

 fine, almost obliterated, wholly unimpressed and sensibly converging 

 nearly to the base, where they are more narrowly separated than in any 

 of the preceding species of this section. Median process of the fifth 

 ventral very narrow but rather long, about a fourth as wide as the sinus, 

 deeply sinuate at apex with its sides straight and nearly parallel and 

 the angles acute ; fimbriate sides of the segmental sinus long, very 

 feebly curved, each with about ten or eleven unusually long black 

 spinules. Length 3.5 mm.; width 0.6mm. California (Sta. Clara Co.). 



gregale Csy. 



Body shorter and relatively less slender, the elytra scarcely picescent, the 

 legs brown; surface shining, the abdomen dull; head very finely, not 

 very densely punctured, as long as wide, evidently wider than the 

 prothorax, the sides behind the rather small eyes parallel and broadly, 

 distinctly arcuate, the basal angles broadly rounded; prothorax nearly 

 as in the preceding but with the sides of the apex less oblique and more 

 rounded and the obtuse apical angles more broadly rounded; elytra 

 two-fifths wider and one-half longer than the prothorax, scarcely longer 

 than wide; under surface of the head convex, polished, rather finely, 

 sparsely punctate, the gular sutures fine, but slightly impressed, grad- 

 ually and feebly converging nearly to the base almost as in gregale. 

 Median process of the fifth ventral distinctly more than a third as 

 wide as the sinus, deeply and evenly sinuate at apex from side to side, 

 its angles acutely rounded and less than right, its sides straight and 

 diverging thence to the base; fimbriate sides very feebly curved ; sur- 

 face having some long bristles before the process at each side of the 

 middle, nearly as in gregale. Length 3.2 mm.; width 0.6 mm. Califor- 

 nia (Sta. Cruz to San Francisco) miuinlnm Csy. 



Body very slender, dark rufo-piceous in color, the elytra piceous, the legs 

 paler; surface rather shining, finely, sparsely punctate, the elytra and 



