372 MEMOIRS ON THE COLEOPTERA 



thorax only a fourth or fifth wider than long; base much narrower 

 than the apex, sinuate, barely wider than the peduncle; transverse 

 impressions rather deep, the anterior sublineiform; linear foveae with 

 but very few punctures; elytra but very slightly wider than the 

 prothorax and nearly four-fifths longer than wide, rather obtusely 

 rounded in apical third; striae very coarse, deep, rapidly fine at apex, 

 the punctures strong, close-set, crenulating the moderately convex 

 intervals; sixth stria but slightly less marked though becoming obso- 

 lete basally, the seventh subobsolete, although becoming deep api- 

 cally. Length (cf 9 ) 8.5-8.8 mm.; width 2.5-2.65 mm. Texas. 

 [Pterost. put us Csy.] puta Csy. 



4 Form stouter, strongly convex, deep black, the legs more piceous, the 

 tibiae and tarsi rufescent; head well developed, the eyes rather prom- 

 inent, the mandibles longer than in the preceding; antennae moder- 

 ate, slender, ferruginous; prothorax not quite a third wider than 

 long; base feebly sinuate, narrower than the rather deeply sinuate 

 apex; sides arcuate, less so and more oblique basally, the angles 

 broadly rounded; surface with a few obsolescent ruguliform lines 

 basally, the transverse impressions obsolete or very feeble; foveae 

 deep, with but few punctures, not attaining the base; elytra oblong- 

 oval, the sides rounding behind from near the middle, also rapidly 

 rounding at base, two-thirds longer than wide, evidently but not 

 greatly wider than the prothorax; striae deep, very obscurely or 

 scarcely at all punctured, the sixth and seventh fine and obso- 

 lescent; intervals convex internally, the scutellar stria completely 

 wanting. Length (tf 9 ) 10.3-10.5 mm.; width 3.3-3.6 mm. Indi- 

 ana, W. S. Blatchley. [Feronia obscura Say] obscura Say 



Form less stout and less convex, more parallel, polished, obscure testa- 

 ceous to piceous in color, the under surface and legs rufous; head 

 well developed, with rather prominent eyes, much broader than in 

 puta and with less arcuate mandibles, the sulci rather short, parallel; 

 antennae slender, pale ferruginous, nearly half as long as the body; 

 prothorax barely a fifth wider than long; base rather deeply sinuate, 

 distinctly narrower than the subequally sinuate apex; sides strongly 

 but not widely, subequally reflexed and arcuate, the gutter extend- 

 ing inward at base for some distance; transverse impressions subob- 

 solete; foveae rather long, deep, more or less punctate, the punctures 

 coarse; scutellum small, evenly triangular; elytra three-fifths longer 

 than wide, not a fifth wider than the prothorax, the sides gradually 

 rounding behind, rapidly at base, the sinus rather deep; striae coarse 

 and deep, not very coarsely, rather closely punctate, the sixth more 

 or less evidently less deep, the seventh very fine and subobsolete 

 except apically; marginal line distinct, rather nearer the edge than 

 to the eighth stria; scutellar stria very short but evident; intervals 

 strongly convex except laterally. Length (cf ) 8.4-8.8 mm.; width 

 2.8-3.0 mm. Missouri (St. Louis) amnicola n. sp. 



5 Body rather stout, strongly convex, polished, deep black above and 

 below, the epipleura and legs rufous; head three-fifths as wide as 

 the prothorax, somewhat elongate, the eyes only moderately prom- 

 inent; sulci converging; mandibles short and arcuate; antennae 



