86 CASEY 



nearly smooth, the punctures sparse and fine for this division of 

 the group. Length 13.8 mm. ; width 6.9 mm. Sta. Barbara. 



tenebrosa n. sp. 



Cf — Prosternal process margined throughout as in the preceding sec- 

 tion. Body broadly oblong, black, alutaceous, the elytra shining, 

 glabrous ; head perfectly flat throughout, not impressed anteriorly, 

 rather finely but strongly and unusually closely punctate, the an- 

 terior canthus not more prominent than the posterior; prothorax 

 nearly three-fifths wider than long, as wide as the elytra, the sides 

 parallel in about basal half, very gradually arcuate and more con- 

 verging anteriorly, very narrowly reflexed and with strong elevated 

 bead, the apex broadly, circularly emarginate, fully two-thirds as 

 wide as the base, the angles obtuse and rather bluntly rounded, the 

 surface minutely, remotely punctate, the punctures still very small 

 and sparse and each bearing a minute hair laterally ; scutellum not 

 very broadly triangular; elytra a little less than one-half longer 

 than wide, obtusely angulate at apex, smooth, very feebly rugose 

 apically, each with three extremely obsolescent longitudinal ridges, 

 the punctures very fine and sparse throughout, the sides very finely 

 reflexed; prosternum with moderate, strong and rather close-set 

 punctures ; femora somewhat finely but strongly punctate, each 

 puncture with an obvious short decumbent hair ; tarsi not very 

 stout. Length 13.8 mm.; width 7.0 mm pectoralis n. sp. 



Prosternal process not at all margined at its apex , 10 



10 — Elytra glabrous, the punctures never bearing setae which project 

 materially beyond their own limits 11 



Elytra sparsely pubescent, the hairs stiff, decumbent and small in size 

 but quite obvious 15 



II — Elytra parallel, with nearly straight sides, obtusely angulate at 

 apex 12 



Elytra somewhat inflated at the middle, wider than the prothorax, with 

 parallel and feebly arcuate sides, the apex more prolonged and 

 acutely angulate than in any other of this group 14 



12 — Tarsi decidedly stout, the integuments strongly shining. Head 

 flat, not impressed anteriorly, rather finely, moderately closely 

 punctate, the anterior canthus rather more prominent than the 

 posterior ; prothorax transverse, nearly two-thirds wider than long, 

 subparallel basally and gradually rounded and more narrowed 

 apically (c?), or broader, somewhat inflated and with more 

 rounded sides (?), the margin finely reflexed, the apex broadly 

 emarginate, with more or less blunt apical angles; surface ex- 

 tremely faintly alutaceous, very minutely, remotely punctate, the 

 punctures still very fine, nude and sparse laterally though more 

 distinct; scutellum moderate; elytra scarcely one-half longer 

 than wide, smooth and polished, each having about three fine, 

 very feeble and irregularly sinuous eroded lines, sending out a few 

 still more obsolete vermiculate branches, the punctures extremely 



