DYNASTIN.E 257 



prothorax of the same general form and sculpture as in satyrus, the 

 basal bead very strong and entire; elytra short, scarcely as long as 

 wide, slightly inflated posteriorly, where they are distinctly wider 

 than the prothorax; apex rather abruptly, very obtusely rounded, 

 not at all as in the preceding, the sculpture consisting of widely but 

 shallowly impressed lines of small open annuli, those of the sutural 

 series larger and in mutual contact; pygidium but little over twice 

 as wide as long, strongly convex, more so above than below the middle 

 as usual, the minute umbo scarcely traceable; punctures fine, very 

 sparse, becoming but little less sparse basally. Female much larger 

 than the male, deep polished black, piceo-castaneous beneath; 

 head very much smaller than in satyrus, not quite a third as wide as 

 the prothorax, closely punctate and rugulose, the sides of the trape- 

 zoidal clypeus rather high, thin and reflexed, the reflexed apical 

 carina bilobed, the sides diverging to the base; tubercle between the 

 eyes high and very acute; prothorax in outline nearly as in the male 

 but smooth and even, the sparse punctures obsolete medio-basally, 

 becoming very coarse and closer toward the sides and, antero-laterad, 

 coarse, dense and rugose; basal bead strong laterally but more feebly 

 defined medially, where the groove is frequently merely a confused 

 line of small punctures, the interruption of the beading virtually 

 complete; elytra but little longer than wide, very feebly inflated 

 posteriorly, very slightly wider than the prothorax, rapidly rounded 

 in about apical third, the sculpture as in the male, but the lines of 

 annuli, though more narrowly and sharply impressed, are only very 

 feebly so; pygidium polished, less but more evenly convex than in 

 the male and with a distinct impression along the middle of each 

 oblique lower side; punctures very fine and extremely sparse, a little 

 more distinct near the base. Length (c?) 23.5, (9 ) 25.5-26.0 mm.; 

 width (cf) 14.2, (9) 14.7-15.5 mm. New Mexico (Fort Wingate). 

 A single male and two females, one of the latter being the type. 



hebes n. sp. 



I have attached verticalis Fall (Cheiroplatys) doubtfully to 

 satyrus, not knowing any more appropriate place for it, but, as the 

 length is given as 22 to 23 mm., and the width about 13 mm., it 

 can be seen at once that it is materially smaller and may represent 

 a perfectly distinct species, of which little can be said, however, 

 until the male is discovered, for the short original description 

 (Can. Ent., 1905, p. 272) alludes definitely to no character which 

 could be useful in discriminating it among other species of Xyloryc- 

 tes, being designed merely to differentiate it from Orizabus clunalis; 

 the two typical examples were taken at Las Vegas, New Mexico. 

 It cannot be the same as hebes, from Fort Wingate, as this also is 

 much larger and the female differs besides in having the basal 

 thoracic bead broken or subinterrupted medially ; it is particularly 



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



