CETONIIN^E 379 



and subserial on the flanks, without tomentum of any kind ; pygidium 

 large, transversely oval, solidly tomentose, excepting a transverse, 

 finely scabriculate black area at apex, which is sometimes prolonged 

 anteriorly at each side of the median line; parapleura and the side of 

 each abdominal segment partially tomentose; legs slender, the an- 

 terior tibiae bidentate in both sexes; hind tarsi slender, a fourth 

 longer than the tibiae (cf ), scarcely longer than the latter and rather 

 more slender (9). Length 11.2-13.8 mm.; width 6.2-7.9 mm - 

 Pennsylvania, Virginia and westward to Indiana. Twelve examples. 

 [ Cetonia maculosa Knoch, Trichius bigsbyi Kirby and Gnorimus 

 dissimilis G. & P.] maculosa Knoch 



The names hitherto given this species serve to indicate its aber- 

 rant nature. It is moderately abundant at times but I know 

 nothing regarding its habits, except the statement of Burmeister 

 that it occurs about Rubus blossoms. 



Roplisa Csy. 



This genus is intermediate in some respects between the Gnori- 

 mella and Trigonopeltastes types, having the elongate elytra of the 

 former and the deltoid pronotal marking and irregularly maculate 

 elytral surface of the latter, but in other respects, as for example 

 the 9-jointed antennae and short tarsi, it is widely distinct from 

 either of them. The type is one of the smallest members of the 

 Trichiini, excepting Valgus, and it may be described as follows: 



Body narrow, oblong-oval, rather convex, piceous, with the legs and ab- 

 domen testaceous, the head and pronotum shining black, the clypeus 

 often rufescent, the pronotum with a widely open V-shaped im- 

 pressed line of yellow tomentum, interrupted at the suture and some- 

 times partially closed anteriorly by a fine transverse line of similar 

 nature, tending thus to reproduce the marking of Trigonopeltastes, 

 the margins throughout the periphery, more broadly near the hind 

 angles, also with dense yellowish tomentum; elytra opaque, rufous, 

 the sides broadly from before the middle, the apex and the suture 

 broadly in more than apical half, black, the markings often nubilous; 

 on the flanks there are sometimes two small and rounded spots of 

 tomentum, the anterior the larger; scutellum partially, the suture in 

 basal third, where it joints a transverse line extending to inner third, 

 tomentose; upper surface glabrous, the lower with very small sparse 

 hairs, which are still more minute on the pygidium; head irregularly 

 punctato-rugose, the clypeus punctate medially, longitudinally rugose 

 laterally, nearly as long as wide, parallel and rounded at the sides, 

 thickened, broadly, feebly arcuate, with rounded angles and feebly, 

 medially sinuate, at apex; prothorax but little wider than long, 

 parallel and feebly arcuate at the sides to fully apical third, where the 



