CETONIIN^E 337 



Body oblong-suboval, strongly convex, shining, piceous-black, the under 

 surface and legs not quite so dark as the upper surface, which is 

 completely glabrous, even the vertex without discernible hairs, those 

 of the pygidium sparse and extremely minute, rather long and coarse, 

 obscure fulvous and distinct on the sterna and hind coxal plate; 

 head very small, with coarse, deep and close-set punctures, the 

 vertex with a strong median tubercle; clypeus much shorter than 

 wide, trapezoidal, the apex with a broad deep sinus between the two 

 strongly reflexed dentiform processes; antennal club very small; 

 prothorax large, two-fifths wider than long, convex, subevenly 

 rounded at the sides and rather wider at the middle than at base, 

 much narrowed anteriorly and with coarse, externally strongly and 

 linearly punctate marginal bead; base with a broad and feebly 

 truncate median lobe; surface with rather coarse but shallow, sparse 

 punctures, somewhat deeper and more transverse toward the apical 

 angles; scutellum smooth, with a single long closed incised annulus 

 along each side toward base; elytra slightly elongate, with long, not 

 very abrupt lateral sinus and moderately prominent humeri, the 

 costae very feeble, almost obsolete, the nearly flat intervals each 

 with two series of large, finely umbilicate annuli, open behind as 

 usual, and with a median line of smaller distant punctures; flanks 

 with almost similar punctures, which are in greater part linear in 

 arrangement; sutural angles obtuse, not in the least dentiform; 

 pygidium feebly convex, with very fine and widely separated, sub- 

 concentric and inconspicuous incised lines; anterior tibiae very 

 moderately tridentate, the lower two teeth unusually approximate, 

 separated by barely more than half the upper interval; tarsi short 

 but notably slender. Length (9) H-5 mm.; width 6.7 mm. New 

 Mexico. [Euphoria verticalis Horn] verticalis Horn 



The Mexican species described by Mr. Bates under the name 

 Stephanucha bispinis, has a clypeus which is somewhat as in verti- 

 calis and also has a strong tubercle on the vertex, but the body is 

 conspicuously pubescent throughout; I think that it can probably 

 enter this genus however. 



Stephanucha Burm. 



In this genus the body is compact, oblong-oval and unusually 

 convex, in these respects resembling the last, but in nearly all other 

 directions the differences are radical ; the sculpture of the pronotum, 

 for example, is fine and dense, the teeth of the anterior tibiae large 

 in both sexes, subequal among themselves and subequidistant or 

 with the lower two more approximate, and there is no trace of a 

 tubercle on the vertex. It is however in the very peculiar form of 

 the clypeal apex that Stephanucha differs from any other known 



T. L. Casey, Mem. Col. VI, Nov. 1915. 



