Casey — A Revision of the American Paederini. 65 



at about two-fifths from the apex, the sides very broadly arcuate even 

 anteriorly; elytra quadrate, much wider but barely as long as the 

 prothorax in the male, much longer than wide, a fourth wider and very 

 slightly longer than the prothorax in the female, the sides subparallel, 

 very feebly arcuate, the punctures becoming subobsolete toward tip; 

 abdomen parallel, a little narrower than the elytra in the male, equal 

 in width to the latter in the female. Male with the apex of the fifth 

 ventral feebly sinuato -truncate, the slit of the sixth narrow, parallel 

 and deep, the sixth ventral of the female feebly impressed along the 

 middle. Length 4.5-5.0 mm. ; width 0.78-0.88 mm. New York (along 



the ocean beaches) obliteratns Lee. 



Elytral punctures coarse, deep and moderately close-set throughout 7 



7 — Slit of the sixth ventral in the male rounded at the bottom, the adjoin- 



ing surface of the segment not very distinctly impressed 8 



Slit of the sixth segment acutely angulate at the bottom in its external edge, 

 the internal edge narrowly rounded, the edge between the angle and 

 arcuation beveled ; knees generally dusky 11 



8 — Elytra larger, distinctly wider and longer than the prothorax in both 



sexes. Body stouter, somewhat as in saginatus, the head relatively 

 small, very much narrower than the elytra, not longer than wide, sub- 

 orbicular, the eyes rather large but not very prominent, at a third more 

 than their own length from the base, the sides behind them moderately 

 converging and straight for a short distance, then very broadly rounded 

 to the rather broadly arcuato-truncate base ; prothorax slightly elongate, 

 stout, fully as wide as the head, widest at about apical two-fifths, the 

 sides very broadly rounded and only feebly converging toward base, the 

 latter unusually broad; elytra quadrate, convex, parallel, a third wider 

 and nearly a fourth longer than the prothorax; abdomen parallel, dis- 

 tinctly narrower than the elytra. Male with the apex of the fifth ven- 

 tral scarcely at all modified, the slit of the sixth subparallel and straight 

 at the sides, narrow and fully three times as deep as wide, the edges 

 finely and strongly beaded throughout, the bottom narrowly, parabolically 

 rounded, the adjoining surf ace of the segment scarcely at all impressed; 

 female not known. Length 5.3 mm. ; width 1.0 mm. Texas (exact local- 

 ity not recorded) texauns n. sp. 



Elytra relatively smaller and especially narrower, subequal in length to the 

 prothorax 9 



9 — Elytra with the basal angles only slightly exposed at base; head ob- 

 trapezoidal behind the eyes in the male; body slender. Head distinctly 

 elongate, the eyes small, at nearly twice their own length from the base, 

 very convex and prominent, the sides behind them rather strongly con- 

 vergent and straight for the length of the eyes, then moderately round- 

 ing to the neck, the base moderately wide ; antennae rufo-testaceous, 

 dusky for some distance near the middle; prothorax rather narrow, 

 much elongated and narrower than the head, widest before the middle, 

 the sides broadly arcuate ; elytra narrow and slightly elongate, parallel, 

 the sides broadly, feebly arcuate, only very slightly wider than the pro- 

 thorax and a little shorter than the latter, equal in width to the head; 

 punctures less coarse and distinct than in the two following species; 

 abdomen parallel, as wide as the elytra. Male with the fifth ventral 



