CETONIIN.E 335 



Tropinota Muls. 



Among some material recently lent me by the Public Museum in 

 Milwaukee, I noticed a small series of a species widely isolated 

 from any other known North American type; they all bore the 

 label "Utah," and I had held them to represent an undescribed 

 genus until, by chance, looking over the European material in 

 my collection, I found a species named Tropinota hirta Poda 

 (hirtella Linn.), that matched the Utah series very well. This 

 made the remark published by Horn (Pr. Am. Phil. Soc., 1880, 

 P- 399) regarding a certain Cetonia vestita of Say, which was 

 believed to be the same as hirtella Linn., and therefore relegated to 

 European synonymy, doubly interesting. On comparing the Utah 

 specimens with Say's description of Cetonia vestita, I find complete 

 concordance; at the same time, while resembling closely the speci- 

 men representing the European hirta, which I have before me, they 

 do not agree with the latter in all their characters. I therefore 

 feel it advisable to describe this possibly Rocky Mountain form 

 under Say's name provisionally as follows: 



Form oblong, more rhomboidal (c? ), much depressed above, the elytra 

 deplanate; color gray-black, deeper and more shining beneath, the 

 upper surface alutaceous or opaculate; vestiture gray, very long, 

 herissate and conspicuous above and beneath, dense on the pro- 

 notum, less so on the elytra; head densely punctate, with very long 

 dense pubescence, short, sparse and radiating on the clypeus, which 

 is nearly flat, with the sides feebly converging and arcuate, the apex 

 with a large deep sinus between two obtuse and slightly reflexed, 

 dentiform projections; antennal club black, small and sexually 

 equal; prothorax a fourth wider than long, very finely margined at the 

 sides, which are inflated and rounded medially, narrowed basally, 

 more so apically; base not sinuate medially; surface finely, very 

 densely punctate, the impunctate median line sharply defined and 

 obtusely cariniform, not expanded at base; scutellum confusedly 

 punctured at the sides, but not medially; elytra slightly elongate, 

 the sinus broad and not abrupt, the humeri but slightly prominent 

 laterally; surface distinctly micro-reticulate, the costae feeble, the 

 inner obsolescent behind two-fifths, the outer more evident almost 

 throughout; intervals each with two or three fine catenulate double 

 incised lines, with intermediate series of larger and smaller punctures 

 intermingled, the flanks rather abruptly steep and with small arcuate 

 lineiform punctulation; pygidium with wavy irregular transverse 

 incised lines and very long pubescence; mesosternal process arcuato- 

 truncate, densely punctured and pubescent throughout; anterior 

 tibiae tridentate, subequally in both sexes, the upper tooth rather 



