302 Goleopterological Notices, VII. 



verse median area ; color piceous-black, without trace of metallic lustre, the 

 sides paler, a little more broadly so and nubilateat base and apex ; median line 

 fine but distinct. Elytra not quite as long as wide; striae rather fine and feebly 

 impressed, rather finely and not closely punctured ; Intervals almost flat, the 

 striae and punctures coarser and deeper near the sides ; dark areas without 

 trace of metallic lustre. Under surface blackish-brown, the abdomen paler ; 

 legs, hypomera and epipleura; pale. Length 6.5 mm. ; width 4.0 mm. 



Lake Superior (Bayfield), 



Readily separable from americanum by the nearly flat elytral 

 intervals and finer and more widely separated punctures, as well 

 as by the maculation of the posterior parts of the elytra and the 

 outline of the prothorax. The description applies to the female, 



O. texanimi.. — Broadly oval, strongly convex, rather shining, the macu- 

 lation nearly as in americanum, except that the posterior pale spot of the elytra 

 unites with the next anterior sinuous band ; dark areas with a faint metallic- 

 green tinge, more pronounced on the head. Head sparsely but rather strongly 

 punctured in the green basal area, the pale frontal spot evenly angulate and 

 impiinctate, Prothorax short and strongly transverse, almost 2'% times as 

 wide as long, the sides strongly convergent from base to apex and evenly arcu- 

 ate throughout; coloration as in americanum; punctures sparse, irregular, 

 rather strong but fine, remote and feeble in a transverse median line, wanting 

 near the reflexed lateral margin as usual ; median line feebly impressed. Ely- 

 tra short, distinctly shorter than wide, finely striate, the striae moderately but 

 rather broadly impressed, the punctures moderate in size and quite widely 

 spaced ; intervals feebly convex, shining and only just visibly alutaceous. 

 Under surface blackish-brown, the abdomen paler ; side margins and legs pale 

 brown. Length 6.0 mm.; width 4.1 mm. 



Texas (Austin), 



The single female before me represents one of the allies of 

 americanum, but may be distinguished by its shorter and more 

 broadly oval form, shorter prothorax with more strongly con- 

 verging sides, bj' the finer and more widely separated punctures, 

 feebler striae and flatter intervals, and by some differences in the 

 maculation near the elytral apices. It was taken on the sandy 

 banks of the Colorado River in June. 



O. concionuiu. — Narrowly oval, the elytra quite inflated near the base, 

 the sides thence rather strongly convergent and evenly arcuate to the apex, 

 which is somewhat narrowly rounded ; dark areas predominant, with a green 

 metallic lustre anteriorly, but almost completely non-metallic on the elytra. 

 Head with a small and acutely angulate pale frontal area, the green basal 

 area very finely, feebly and sparsely punctured. Prothorax but slightly more 

 than twice as wide as long, the sides feebly arcuate, moderately convergent an- 

 teriorly,but becoming parallel in about basal half; disk finely and rather closely 



