28 HETEROMERA. 
the thorax, rather broad, very closely and finely punctured, with some indistinct shallow grooves towards 
the suture. 
Length 11-12 millim. (¢ 9.) 
Hab. Mexico, Monclova, Parras, and Saltillo in Coahuila (Dr. Palmer), Guanajuato 
(Sallé). 
Seven examples, of which four are males. The sides of the thorax in the female of 
this species are not straight, but a little rounded (especially in front), and scarcely 
straighter than in the male; the angles, though somewhat acute, are not very pro- 
minent. Allied to E. canaliculatus, Say. | 
12. Epitragus incisus. 
Oblong ovate, broad, obscure brass with a cupreous tinge, somewhat densely clothed with short cinereous 
pubescence. Head closely and finely punctured, epistoma produced and rounded in front, with a short, 
indistinct, longitudinal elevation; prothorax a little broader than long, the sides almost straight from 
the middle nearly to the base, slightly rounded and narrowing in front, the lateral margins reflexed and 
thin, the front angles a little prominent and acute, the hind angles scarcely prominent and subacute, the 
base strongly bisinuate and on each side from the central lobe to the angles straight, very finely and 
sparingly punctured, with a deep, broad, central channel from base to apex, the disc a little raised near the 
anterior margin on each side of the central groove; elytra wider than the thorax, comparatively broad and 
short, narrowing but little towards the apex, very finely and sparingly punctured, and with shallow grooves. 
Length 134-15} millim. (.) 
Hab. Mzxtco, Tres Marias Islands (forrer). 
Three examples. This species may be known by its comparatively broad form, and 
canaliculated thorax; the elytra are much broader than the thorax. 
13. Epitragus canaliculatus. 
Epitragus canaliculatus, Say, Long’s 2nd Exped. p. 281 (1824)’; Leconte, New Sp. p. 109 (1866) ; 
Horn, Revis. Ten. N. A. p. 264 (1870). 
Hab. Norta America, Pennsylvania, Missouri, and Southern States’, Colorado, 
New Mexico, and Arizona 2,—Mexico, Northern Sonora (Morrison), Chihuahua (Buchan- 
Hepburn). 
I have not seen North-American examples of this species; the determination is, in 
consequence, a little doubtful. 
14. Epitragus scutatus. 
Oblong ovate, rather broad, dull eneous, with fine scattered cinereous pubescence. Head rather smooth, closely 
and very finely punctured, the eyes with a fine supraorbital carina above, the epistoma produced and 
rounded in front; prothorax broader than long, narrowing from the base, the lateral margins thickened, 
slightly rounded at the sides, and a little sinuate before the thickened, prominent, and acute front angles, 
the hind angles thickened and somewhat obtuse, not prominent, the base strongly bisinuate, the disc raised 
and flattened in front, and with a short elevation on each side enclosing a shallow scutiform excavation 
the anterior margin between the elevations slightly raised and feebly emarginate, with an indistinct smooth 
