Casey — A Revision of the American Paederini. 35 



than the head, distinctly longer than wide, parallel, the sides feebly 

 arcuate medially, the punctures coarse and rather close; elytra dis- 

 tinctly elongate, two- fifths wider and a ihirdlouger than the prothorax, 

 coarsely, closely and confusedly punctured, the punctures decidedly 

 smaller toward the sides and tip; abdomen finely but strongly, rather 

 closely punctate. Male with a short transverse straight and strongly 

 setose fold behind the middle of the second ventral and occupying about 

 median eighth to tenth of the width, the third with a moderate circular 

 setose fovea before the middle, the lobe large, extending beyond the 

 apex of the fourth, evenly rounded at tip and occupying more than 

 median two-fifths of the width; sixth broadly rounded, the apical mar- 

 gin becoming just visibly sinuate at the middle. Length 8.4-10.5 mm.; 

 width 1.22-1.6 mm. Texas (Houston, Austin and El Paso), Iowa 

 (Keokuk), Indiana, Arizona (Tu9Son) and California (Needles). 



pimerianuQi Lee. 



Form and coloration similar to pimerianum, the punctuation less dense ; 

 head well developed, subequal in widih to the elytra, parallel and with 

 the sides feebly arcuate for some distance behind the eyes, then broadly 

 rounded to the neck; punctures moderately coarse and not very close- 

 set, separated, except at the sides, by fully twice their own widths; 

 prothorax as in pimerianum but more sparsely and feebly punctate; 

 elytra similar and similarly punctured but rather less closely, the ab- 

 domen also more sparsely punctulate above and beneath. Male with a 

 transversely arcuate setose fold, much longer than in pimeriamim, behind 

 the middle of the second ventral and occupying about median sixth of 

 the width; third with a rather larger and more transversely elliptical 

 setose fovea, moderate in size, just before the middle, the lobe obsolete 

 in specimens at hand. Length 10.5 mm. ; width 1.6 mm. Iowa. f=ca»'o- 

 linum Er. (Lee.) — erroneous determination] lecontei Horn 



13 — Abdomen black, the last two segments abruptly pale rufous. Body not 

 very stout, the head black; prothorax and elytra bright rufous, the 

 latter usually clouded with piceous toward the suture except at apex; 

 legs pale; head parallel and feebly arcuate at the sides, the basal angles 

 broadly rounded, not quite as wide as the elytra, the punctures rather 

 coarse deep and close-set, separated by slightly more than their own 

 widths ; prothorax but slightly elongate, distinctly narrower than the 

 head, parallel, only very slightly narrower at base than at apex, the 

 punctures coarse, strong and rather close; elytra distinctly longer than 

 wide, two-fifths to nearly a half wider and two-fifths longer than the 

 prothorax, moderately coarsely and closely, irregularly punctate; ab- 

 domen slightly narrower than the elytra, strongly but not densely punc- 

 tulate. Male with the setose fold of the second ventral occupying 

 about median seventh, the rounded fovea of the third large, the lobe 

 rather long and narrow, extending beyond the tip of the fourth segment 

 and occupying scarcely more than median third of the width; sixth 

 segment rather narrowly rounded at tip; fold of the second ventral in 

 the female much smaller than in the male. Length 9.8 mm.; width 

 1.6 mm. New York to North Carolina and Iowa bicolor Grav. 



Abdomen uniform in color throughout, sometimes very sMghtly paler at 

 tip 14 



