476 CASEY 



vicina, of Solier, are certainly not identical with Say's species 



and are both valid; in addition exsculpta and carinataC\i3.n\^., 



and probably asperaia, scabrosa and similar described forms, 



will enter the genus. The six following can be described at 



the present time as typical species : — 



Pronotiun not elevated along the median line, its base extending later- 

 ally beyond the basal angles of the elytra, the latter each with three 

 tuberosities at the summit of the apical declivity forming an equi- 

 lateral triangle, with its base transverse. Body parallel, moder- 

 ately stout and not very depressed, deep black, dull, the vestiture 

 decumbent, rather dense, consisting of fulvous squamiform hairs ; 

 head sparsely punctured, not tuberculose, elevated at the sides ; 

 prothorax subquadrate, as long as wide, the sides rounding and 

 converging near the apex, gradually and very feebly converging 

 basally and nearly straight to the right, blunt and somewhat 

 prominent basal angles, the base broadly, arcuately lobed ; surface 

 with two strong sinuous ridges, the intermediate space broadly 

 concave behind, narrowest at the middle, the shining tubercles 

 confined mostly to the summits of the ridges but also scattered 

 broadly toward apex and near the sides ; elytra coarsely pitted, 

 a little wider than the prothorax and not quite twice as long, the 

 humeri obliquely truncate, the base sinuate, each elytron with a 

 narrow, strongly elevated and nearly straight ridge along the 

 median line from the basal margin to a little before the middle, 

 and with two smaller, more elongate tuberosities before the tri- 

 angle of three above mentioned, the shining tubercles small and 

 subevenly scattered throughout ; under surface sparsely squamo- 

 pubescent and tuberculose throughout. Male with the elongate 

 tumescent glabrous area of the two posterior pairs of femora 

 finely punctate, the tubercle of the anterior pair similar and elon- 

 gate, though only about three-fourths as long. Length 17.0-1S.0 

 mm.; width 6.0-6.7 mm. Mexico (Guerrero), — Baron. 



* championi n. sp. 



Pronotum flattened along the median line and without the oval basal 

 impression of championi^ the elytra with three much smaller 

 tuberosities at the upper part of the declivity arranged as in that 

 species. Body narrower and much more elongate, parallel, some- 

 what convex, black and dull, not very densely clothed with narrow 

 and decumbent, dark brown scales, which are rather sparse and 

 more hair-like on the head and pronotum ; head somewhat rugosely 



the fine scattered tubercles less flattened. Length 15.2 mm.; width 5.8 



mm. ( 9 ). Mexico (Jalapa), — Hoge *in2equalis Saj 



It is probable that Say's specimens came from the high country back of Vera 

 Cruz, and, studying his description carefully and considering the acute and 

 prominent basal angles of the prothorax, mentioned in the description, as well 

 as the absence of any note on the pubescence, there can be but little doubt that 

 the form here described is really the one which Say had before him. 



