172 MEMOIRS ON THE COLEOPTERA 



features. The hind thoracic angles are not carinate. There are 

 two species at hand as follows : 



Body suboval, rather strongly, evenly convex, polished, not at all retic- 

 ulate, flavo-testaceous, the elytra having a common large central 

 black spot, the suture thence to the tip also often narrowly dusky; 

 head fully three-fourths as wide as the prothorax, the eyes large, 

 rather prominent, the sulci broadly impressed, not far from the eyes, 

 the larger orbital puncture moderate; antennae rather slender, but 

 feebly incrassate distally, scarcely two-thirds as long as the elytra, 

 the medial joints more than twice as long as wide; prothorax about 

 a sixth wider than long; base slightly narrower than the subtruncate 

 apex and four-fifths the maximum width; sides narrowly and slightly 

 reflexed, broadly rounded in anterior, oblique in posterior, half sin- 

 unate posteriorly, becoming parallel at base; angles right, not cari- 

 nate; anterior impression obsolete, the posterior an entire impressed 

 series of punctures; foveae small, feeble; stria very fine, incomplete; 

 elytra one-half longer than wide, fully three-fourths wider than the 

 prothorax, oblong-oval, gradually pointed or ogival behind; sides 

 arcuate, the humeri rather rapidly rounded; striae entire, rather fine, 

 feebly and subequally impressed, finely and somewhat closely punc- 

 tate, the seventh wanting; fifth stria with a short apical groove; 

 foveae very small, axial on the third interval near two and four 

 sevenths. Length (cf 9 ) 2.3-2.7 mm.; width 0.8-1.0 mm. Indiana 

 to Louisiana. [T. elegantnhts Laf.] ephippiatus Say 



Body slightly shorter and more ventricose, strongly convex, highly pol- 

 ished, pale testaceous in color, each elytron with an oblong central 

 black spot, behind which there is a large rounded flavate area, these 

 two flavate spots separated by a blackish sutural area, which is 

 finely and obliquely connected with the central black areas; head 

 with well developed eyes, five-sixths as wide as the prothorax; an- 

 tennae testaceous, scarcely two-thirds as long as the elytra, slender 

 basally, incrassate distally, the medial joints less than twice as long 

 as wide; prothorax about as long as wide, the truncate apex slightly 

 wider than the base, which is four-fifths the maximum width; sides 

 moderately rounded anteriorly, broadly, feebly sinuate toward the 

 sharp right basal angles; anterior impression obsolete, the posterior 

 a shallow punctate sulcus before the basal bead, the foveae small and 

 feeble; margins very finely reflexed, the surface sloping more steeply 

 at the sides than in the preceding; elytra one-half longer than wide, 

 fully four-fifths wider than the prothorax, gradually acutely ogival 

 in about apical half, the humeri rapidly rounding; striae coarse, 

 feebly impressed suturad, obsolete in apical third; punctures coarse, 

 widely separated in the series, the seventh wholly obsolete: foveae 

 very small, before basal third and well behind the middle. Length 

 (cf 9 ) 2.1-2.2 mm.; width 0.8 mm. Mexico (Frontera, in Tabasco), 

 -Townsend. Three examples *oculaticauda n. sp. 



The species described as oculaticauda differs distinctly from any 

 Mexican species mentioned by Bates. Pericompsus histrionellus 



