Casey — A Revision of the American Paederini. 125 



prothorax, rather stout, feebly incrassate distally , the medial joints some- 

 what more than twice as long as wide and distinctly longer than the sub- 

 apical; prothorax rather distinctly wider than the head, but little longer 

 than wide, obtrapezoidal, the sides strongly converging and straight, 

 the punctures small, very sparse and unevenly disposed, subserial along 

 the smooth line; elytra slightly elongate, large, parallel, a fourth wider 

 and longer than the prothorax, the punctures fine, very feeble, arranged 

 in wholly unimpressed and somewhat regular series, except toward 

 apex; abdomen distinctly narrower than the elytra, finely, closely punc- 

 tulate. Male with the fifth and sixth ventrals wholly unmodified on the 

 surface, the former scarcely visibly sinuato-truncate toward the middle 

 at apex, the latter with a gradually formed sinus, slightly wider than 

 deep, one-tbird as wide as the apex, the emargination broadly rounded 

 at the bottom, with its sides at first feebly diverging posteriorly. 

 Length 8.0 mm. ; width 1.28 mm. Arizona (Winslow), — Mr. Wickham. 



praeceps n. sp. 

 Abdomen rufous at tip 8 



8 — Antennae shorter, the medial joints but slightly elongated. Body small 



and unusually slender, parallel, rufous in color, the head and abdo- 

 men — except toward tip — black, the legs and antennae pale testaceous ; 

 head rather longer than wide, coarsely, very sparsely punctate, the 

 sides nearly straight and just visibly converging from the eyes to the 

 broadly rounded basal angles; eyes well developed, at about one-half 

 more than their own length from the base; antennae moderately thick, 

 scarcely as long as the head and prothorax, but slightly incrassate dis- 

 tally, the medial joints scarcely one-half longer than wide, longer than 

 the subapical; prothorax only very slightly longer than wide, just vis- 

 ibly wider than the head, the sides parallel and very feebly arcuate, the 

 basal angles broadly rounded, the apical not at all rounded; punctures 

 coarse and irregular along the smooth median line, small and very 

 sparse elsewhere; elytra slightly elongate, parallel, a fifth wider and a 

 fourth longer than the prothorax, the punctures coarse, arranged in 

 regular and broadly impressed series; abdomen decidedly narrower 

 than the elytra, minutely and rather sparsely punctulate. Male un- 

 known; female with the sixth ventral narrow, evenly rounded at tip. 

 Length 6.4 mm.; width 0.95 mm. New Mexico (Albuquerque). 



angnsta n. sp. 



Antennae more elongate, longer than the head and prothorax, very feebly 



incrassate distally, with the medial joints almost twice as long as 



wide 9 



9 — Form somewhat stout, rather dark rufo-testaceous throughout, the 



head piceous-black, the abdomen — except toward tip — black; head 

 fully as long as wide, coarsely, very sparsely punctate, subimpunctate 

 toward the middle as usual, the sides straight and parallel, the angles 

 well rounded; eyes at three-fourths more than their own length from 

 the base ; prothorax distinctly wider than the head, but little longer than 

 wide, the sides parallel and nearly straight, rounding toward base, the 

 punctures rather coarse and very sparse throughout but serial and 

 close- set along the median smooth space; elytra but slightly longer 

 than wide, parallel, a fifth wider and a fourth longer than the pro- 



