PTEROSTICHIN^; 383 



rather long neck and large prominent eyes; antennae, palpi and la- 

 brum dark ferruginous; prothorax parallel, with evenly and strongly 

 arcuate and very finely reflexed sides; base somewhat wider than 

 the deeply sinuate apex, finely margined laterally, the angles very 

 obtuse, rounded; incised line behind the apex extremely narrowly 

 interrupted at the middle; stria very fine and incomplete, the surface 

 with a band of dispersed punctures between the foveae, the latter 

 rather narrow and deep, not attaining the base; elytra oblong-oval, 

 three-fifths longer than wide, less than a fourth wider than the pro- 

 thorax; striae very moderate, shallowly groove-like, with very fine 

 punctures, the intervals nearly flat; seventh stria fine only near the 

 base; sinus rather short and distinct. Length (9 ) 9-8 mm.; width 

 3.35 mm. Texas (locality unrecorded) lucens Chd. 



Surface rather more convex, black, the legs dark rufous; epipleura and 

 abdomen faintly rufescent; elytra with moderate iridescence; head 

 two-thirds as wide as the prothorax, with long neck and moderate, 

 prominent eyes, not as large as in the preceding; antennae a little 

 less elongate but similarly ferruginous; prothorax not quite one-half 

 wider than long, widest distinctly before the middle, with the sides 

 rounded, rather less so basally, finely reflexed; base about as wide as 

 the deeply sinuate apex, finely margined laterally, the angles broadly 

 rounded; apical incised line very fine, rather broadly and completely 

 interrupted medially; surface with very few extremely small punc- 

 tures near the foveae, the latter narrow and deep, not attaining the 

 base; elytra scarcely a fourth wider than the prothorax, one-half 

 longer than wide, more obtuse at apex than in lucens, the sinus a 

 little longer; striae moderate though deep and groove-like, the punc- 

 tures small, minutely crenulating the intervals, which are very mod- 

 erately convex; seventh stria very feeble except apically. Length 

 (9) 8.7 mm.; width 3.0 mm. Lousiana (Cane River). One ex- 

 ample taken by the writer ludovicianus n. sp. 



10 Femora all blackish, the tibiae and tarsi dark rufous. Body mod- 

 erate in width and convexity, black, the elytra feebly iridescent; 

 head small, slightly over half as wide as the prothorax, with rather 

 long neck and large eyes, the sulci very short, feeble and indefinite; 

 antennae fuscous, very slender, the three basal joints in great part 

 testaceous, the palpi pale; mandibles small; prothorax a fifth wider 

 than long, the apex feebly sinuate, with obtusely rounded angles and 

 a little narrower than the base, which is margined except medially 

 and with rounded, moderately obtuse angles; sides moderately, sub- 

 evenly arcuate, narrowly reflexed and diaphanous, less rufous apic- 

 ally; apical incised line entire; impressions obsolete; foveae narrow, 

 deep, punctured and almost attaining the base; elytra less than one- 

 half longer than wide, fully a third wider than the prothorax, rapidly 

 and obtusely rounded behind, the sides also more rounding basally, 

 the sinus short, distinct; striae rather coarse and deeply impressed, 

 strongly punctate except apically, the seventh obsolescent basally; 

 intervals rather strongly convex. Length (9) 6.8 mm.; width 2.5 

 mm. Pennsylvania (Harrisburg), Champlain agilis Dej. 



Femora all rufous, but clouded with blackish beneath. Moderately 



