128 MISC. PUBLICATION 6 9 8, U. S. DEPT. OF AGRICULTURE 



tenth narrowly elongate, narrower and longer than ninth. Pronotum 

 strongly convex, truncate or emarginate in front, truncate at base, 

 dentate anteriorly, not transversely depressed behind anterior margin, 

 sides not margined. Scutellum small, quadrate. Elytra strongly 

 convex, each elytron bituberculate along anterior margin of apical 

 declivity. Legs short, subequal in length; tibiae expanded toward 

 apices, dentate on exterior margins, each with a large, arcuate spine 

 at apex ; posterior tarsi as long as, or longer than tibiae, apical seg- 

 ment of each shorter than preceding four segments united. Anterior 

 coxae contiguous. Middle coxae narrowly separated. Intercoxal 

 process of abdomen lamellate. Body rather short, cylindrical. 

 Genotype. — Sinoxylon asperum LeConte. (Present designation.) 

 Casey (1898) erected this genus for four species, sericans (a mis- 

 identification for aspera LeConte), quadrispinosa LeConte (now in 

 Xyloblaptus Lesne), pubescens, and sublaevis, new species, without 

 designating a genotype. 



KEY TO THE SPECIES OF DENDROBIELLA 



Elytra coarsely punctate over entire dorsal surface, the punctures coarse and 

 deep near apical declivity aspera (Le Conte), p. 128. 



Elytra not coarsely punctate over entire dorsal surface, the punctures be- 

 coming obsolete toward apical declivity, pubescence denser than in 

 aspera sericans (LeConte), p. 129, 



Dendrobiella aspera (LeConte) 



Sinoxylon asperum LeConte, 1858, Acad. Nat. Sci. Phila. Proc. 10 : 73. 

 Dendrooiella aspera Lesne, 1901, Soc. Ent. de France Ann. (1900) 69: 492, 496- 



497, figs. 274-275, 282-283, 284 ; 1933, C. R. Con^r. Soc. Savantes de Paris, p. 



239, fig. 1 (publication not available) ; 1938, in Junk (pub.), Coleopt. Cat., pt. 



161, pp. 55-56 ; Belkin, 1940, Ent. News 51 : 192. 

 Sinoxylon sericans Horn, 1878 (not LeConte), Amer. Phil. Soc. Proc. 17: 542. 

 Dendrooiella sericam Casey, 1898 (not LeConte), N. Y. Ent. Soc. Jour. 6 : 67. 



Male. — Brownish black to dark reddish brown, the antennae, palpi, 

 legs (except anterior tibiae) reddish or yellowish brown. 



Head moderately convex, slightly depressed at middle behind eyes, 

 with two small, more or less distinct tubercles on front, densely, 

 coarsely granulose, rather sparsely clothed with long, recumbent and 

 erect, inconspicuous hairs ; clypeus longitudinally grooved at middle, 

 finely, sparsely punctate, sparsely clothed with short, recumbent, 

 whitish hairs; clypeal suture usually obsolete; first segment of an- 

 tennal club usually securiform, with the outer apical angle projecting 

 outward. 



Pronotum slightly wider than long, widest at middle, sides nearly 

 parallel along basal half, arcuately converging anteriorly ; anterior and 

 posterior angles broadly rounded; surface sparsely clothed at sides 

 with long, recumbent, yellowish hairs, the hairs very fine and incon- 

 spicuous on disk, shorter and more erect at middle on apical half, 

 very finely, obsoletely punctate at sides on basal half, coarsely, imbri- 

 cate-punctate at middle on basal half, rather densely, irregularly den- 

 tate on apical half, the teeth broad, semierect, variable in size, and 

 rasplike. 



Elytra at base subequal in width to pronotum at middle; sides 

 slightly expanded posteriorly, conjointly broadly rounded at apices; 

 surface rather densely clothed with short, recumbent, more or less 



