CETONIIN^E 289 



( 9 ) rather stout, the upper tooth small but well formed and sharp; 

 hind tarsi not as long as the tibiae. Length (9) 21.0 mm.; 

 width 12.8 mm. Mexico (Saltillo in Coahuila), YVickham. 



*coahuilae n. subsp. 



B Similar to coahuilce but narrower in build and with the clypeal horn 

 always triangular, sometimes abbreviated and obtuse and with 

 the pygidium solidly metallic-green, without discernible testaceous 

 ground color, the hairs rather finer though long and distinct, but 

 only visible toward base, the apical part glabrous; under surface 

 and legs differing in color, being bright metallic greenish-aeneous 

 throughout; male with the anterior tibiae slender, the teeth, except 

 the apical, small and feeble, unequally spaced, the hind tarsi long 

 and rather stout, longer than the tibiae; female with the anterior 

 tibiae stouter, the teeth distinct and equally spaced; hind tarsi 

 more slender but almost as long as the tibiae. Length (cf 9 ) 

 17.5-22.0 mm.; width 9.8-12.7 mm. Mexico (Gonzales Junction 

 and Irapuato, Guanajuato), \Vickham. Seven examples. 



*viridicauda n. subsp. 



C Rather stouter than either of the preceding subspecies and less cunei- 

 form, similar in coloration throughout to viridicauda, except that 

 there is barely a trace of any tawny color at the sides of the pro- 

 notum and that the elytra are opaque obscure green throughout, 

 feebly pallescent toward the sides, the tawny regions of viridicauda 

 with a fine obscure mottling of green and tawny tint; clypeal horn 

 rather long but triangular. Length (cf) 22.5 mm.; width 12.8 



mm. Mexico (Irapuato), Wickham *commiscens n. subsp. 



5 Head smaller than in any other species, much less than a third as wide 

 as the prothorax. Body feebly cuneiform from the base of the 

 elytra, rather elongate, almost flat above, opaque and very dark 

 velvety-green, the elytra abruptly orange-red along the sides and 

 apex, without suffused discal paler tints, the pronotum in the type 

 with a single small irregular pale area at the sides just before the 

 middle; head shining, green, becoming testaceous anteriorly, the 

 medial ridge becoming very slender apically and the clypeal horn 

 moderate, a truncated triangle; prothorax with the sides converging 

 evenly from base to apex and moderately, though very evenly, 

 arcuate, impunctate, the apical umbo unusually prominent; elytra 

 flat, fully two-fifths longer than wide, having some feeble traces of 

 minute punctulation arranged serially, the elytral suture finely 

 pallescent; the sides are almost straight and the apex rather abruptly 

 truncate; pygidium metallic green in basal, becoming very abruptly 

 pale testaceous in apical, half, everywhere rather closely and con- 

 fluently strigilate, glabrous, but with some distinct short hairs near 

 the base; under surface and legs polished metallic green, the posterior 

 half of the meso- and meta-sternal episterna, femora and median line 

 of the abdomen impressed (cf) testaceous; anterior tibiae (cf) 

 slender, the two lower teeth strong, the upper very small and feeble, 

 obsolescent, the hind tarsi moderately slender, longer than the tibiae. 

 Length (cf ) 19.0 mm.; width 1 1.6 mm. Virginia (Ash Grove). 

 T. L. Casey, Mem. Col. VI, Oct. 1915. debiliceps n. sp. 



