94 MEMOIRS ON THE COLEOPTERA 



coarsely and serially punctate, more deeply sinuate labrum and 

 the mentum extending laterally even beyond the sides of the buccal 

 cavity anteriorly. The basal angles of the prothorax are distinct 

 but do not overlap the humeri in the typical forms of Microschatia. 

 The species are all unknown to me in nature, and the following 

 descriptions are taken from the outline sketches made known by 

 Dr. G. H. Horn (Trans. Am. Ent. Soc., 1893, p. 140): 



Form oblong-elongate, the sides of the prothorax regularly arcuate, 

 without sinuation, the hind angles distinct but not prominent, the 

 surface coarsely, sparsely and irregularly punctate and with a de- 

 pression at the middle of the base; elytra with coarse punctures 

 arranged in irregular rows, the intervals elevated, forming a reticu- 

 lation, sometimes exhibiting a tendency to become subcostate, in 

 which cases the general sculpture approaches that of Glyptasida 

 sordida; prosternum coarsely, cribrately punctured at the sides, 

 broad between the coxae, the apex broadly truncate; met-episterna 

 scarcely longer than wide; epipleura not distinctly limited. Length 

 15.0 mm. Mexico (State of Hidalgo) *punctata Sol. 



Form oblong, of the same general outline as Glyptasida sordida but less 

 convex, black, shining; prothorax broader than long, narrowest 

 at apex, the sides arcuate, with a slight sinuation near the hind angles, 

 the latter acute, not prolonged over the humeri; base narrower than 

 the middle; surface convex, quite smooth, with a moderately strong 

 impression at the middle of the base, slightly explanate and coarsely, 

 roughly sculptured laterally, sparsely, indistinctly punctate an- 

 teriorly; elytra gradually wider two-thirds to apex, then rapidly 

 narrowed, the humeri acute; surface with coarse, not closely placed 

 punctures arranged, from the suture, in eight quite regular series 

 but at the sides evidently confused, at apex smooth; abdomen 

 coarsely, deeply and sparsely punctate near the base; met-episterna 

 longer than wide, smooth; epipleura well marked in their entire 

 length. Length 15.5-20.0 mm. Lower California. [M. punctata 

 Horn nee Sol.] champion! Horn 



Body oval, narrower in front, opaque; head vaguely and not closely 

 punctate, each puncture with an elongate pale scale; prothorax at 

 base one-half wider than long, narrower at apex, the sides feebly 

 arcuate, the hind angles prolonged slightly over the humeri; surface 

 convex, without median basal impression, moderately closely punc- 

 tate, each puncture with a scale; elytra widest behind the middle, 

 each with three feebly defined short discal costae united by anasto- 

 mosing lines, the intervals not distinctly punctate; propleura opaque, 

 sparsely granulate; prosternum coarsely, sparsely punctate and with 

 semi-erect hairs, the apex oval or subtruncate; epipleura well de- 

 fined; abdomen coarsely, not densely punctate. Length 12.0-17.0 

 mm. New Mexico (Grant Co.) and Arizona morata Horn 



