Casey — A Revision of the American Paederini. 169 



except the abdomen which, as usual, is densely and more finely punc- 

 tate, piceous, the elytra rather bright rufous, the legs pale; head behind 

 the clypeal margin fully as wide as long, parallel and straight at the 

 sides behind the rather well developed eyes; prothorax slightly wider 

 than long, very feebly obtrapezoidal ; elytra large, rather longer than 

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

 longer than the prothorax. Length 4.5 mm.; width 0.9 mm. California 

 (Kern Co.) keruiannm n. sp. 



Sinus similar in extent and depth, the median process a little larger, about 

 half as wide as the sinus, more deeply but less broadly sinuate in sub- 

 parabolic arc, but little more than four times as wide as deep, the sides 

 feebly diverging from the rather narrowly rounded and subrectangular 

 angles to the base, the fimbriate sides of the sinus feebly curved. Body 

 finely, not very closely punctate anteriorly, blackish-piceous, the elytra 

 but slightly paler, the legs brownish-testaceous; head not quite as 

 long as wide, parallel and straight at the sides behind the eyes, which 

 are rather well developed; prothorax slightly wider than long, nearly 

 straight and parallel at the sides, the angles all rounded as usual; 

 elytra but slightly wider than the head, rather longer than wide, a 

 fourth wider and half longer than the prothorax. Length 4.6 mm.; 

 width 0.8 mm, California (near San Francisco)... consanguinenm Csy. 



11 — Head unusually narrow, rather longer than wide and only just visibly 

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

 rather well developed eyes, the basal angles moderately broadly rounded ; 

 prothorax but little wider than long, the sides straight and almost par- 

 allel, the angles all rather less rounded than usual; elytra about a 

 fourth wider and half longer than the prothorax, fully as long as wide; 

 body unusually slender, piceous, polished and sparsely punctulate ante- 

 riorly; elytra and legs but little paler. Secondary sexual characters of 

 the fifth ventral almost as in consanguineum throughout. Length 4.0 

 mm. ; width 0.7 mm, California (San Mateo Co.) coutignnm Csy. 



Head broader behind the clypeal margin, fully as wide as long, the sides 

 behind the rather well developed eyes parallel and straight, with the 

 basal angles rather broadly rounded; prothorax well developed, feebly 

 obtrapezoidal, slightly wider than long, with almost straight sides and 

 rather narrowly rounded angles, just visibly narrower than the head ; 

 elytra quadrate, scarcely a fourth wider and less than one-half longer 

 than the prothorax; body moderately slender, blackish-piceous, the 

 elytra and legs slightly paler, rufescent; integuments shining, very finely 

 and not closely punctate anteriorly. Sinus of the fifth ventral three- 

 fifths as wide as the apex, the median process very wide, nearly three- 

 fifths as wide as the sinus, its sinus very broad, deep and parabolic, 

 occupying the entire apex and about five times as wide as deep, its 

 angles rather narrowly rounded and the sides but feebly diverging to 

 the base; fimbriate sides of the segmental sinus rather strongly curved, 

 the spinules about six in number. Length 3.7 mm.; width 0.75 mm. 

 California (southern — probably Los Angeles Co.) snbsimile n. sp. 



Head still broader behind the clypeal margin, a little wider than long, the 

 sides behind the unusually small eyes subparallel and broadly arcuate, 

 the width just before the broadly rounded basal angles rather greater 



