536 Coleopterological Notices, V. 



and two small subbasal denticles ; posterior with four teeth, of which the one 

 nearest the base is much the smallest. Length (median line of pi-onotum and 

 elytra) 9.0 mm. ; width 7.8 nnn. 



Arizona fSta. Rita Mts.). Mr. Wickhara. 



Although allied to texanus and grossus, this species is distinct in 

 several important characters. It is much broiider than texaynis, and 

 ^ros«ws differs radically in the disposition and extent. of the punc- 

 tured areas of the pygidium and propygidium. Judging by the 

 description and figures, it seems impossible to consider texanus and 

 (j?-ossi(S identical, as surmised by Dr. LeConte ; nor is the habitat 

 of texanus necessarily open to doubt; texanus is not mentioned at 

 all by Mr. Lewis in treating of the Mexican species. 



O. vitreolucens. — Broadly oval, excessively finely punctulate through- 

 out, the punctures especially evident and closer on the elytra toward the 

 scutellura. Head broadly impressed along the middle throughout the length, 

 finely, closely punctate, the punctures becoming stronger at base; marginal 

 stria only present at the sides along the eyes ; antennae with the club piceous. 

 PrutJiorax nearly twice as wide as long, the apical angles distant by scarcely 

 more than two-fifths of the basal width ; base oblique but scarcely sinuate 

 laterally ; sides oblique, nearly straight, rounded anteriorly, not distinctly 

 sinuate near the middle ; marginal stria evident only near the apical angles ; 

 lateral stria not quite entire, very close to the edge, deep near the apical 

 angles ; disk strongly, densely punctate near the lateral stria, the punctured 

 area becoming narrower and evanescent to the base, broadest at apex ; aute- 

 scutellar puncture small. Scutellum equilateral, not deeply impressed. Elytra 

 one-half longer, and, before the middle, distinctly wider than the prothorax ; 

 striae very fine ; flanks with a strong sigmoid stria from the humeri extending 

 unbroken along the apex to the suture ; oblique humeral stria straight ; sub- 

 humeral strongly arcuate, not extending to the middle and approaching close 

 to the marginal at apex ; first dorsal subentire ; second nearly entire, abbre- 

 viated at base and consisting of an uneven series of punctures toward apex ; 

 third beginning at the basal margin, not attaining the middle. Prosternvm 

 with a short stria before each coxa, feebly dilated and broadly rounded behind, 

 the apical lobe broadly rounded ; mesosternum short, broadly, roundly sinu- 

 ate, the transverse stria very widely interrupted. Anterior and posterior 

 tibiae 4-dentate, the intermediate 5-dentate. Length (median line of protho- 

 rax and elytra) 7 mm. ; width 6.0 mm. 



Southern Florida. Mr. Jiilich. 



This species has been identified as klugi Mars., but the latter is 

 undoubtedly different, although allied in having a transverse mar- 

 ginal stria at the apex of the elytra. In klugi the frontal stria is 

 entire and semi-hexagonal, and the posterior tibise are 3-deniate 

 externally, while in the present species the frontal stria is only 



