PROC. ENT. SOC. WASH., VOL. 22, NO. 8, NOV., 1920 



225 



Dendrosinus bourreriae, n. sp. 



Oval, very convex, opaque, black. Head somewhat shining, finely punc- 

 tate on vertex and front part of clypeus, the latter with fine, dense, whitish 

 pubescence; front polished at middle, not carinate, on each side having an 

 irregular row of small punctures from which arises a row of long, parallel, 

 black, curving hairs, closely appressed to the surface and forming two in- 

 wardly directed spirals touching at median line and almost surrounding two 

 round, mirror-like areas; eyes four times longer than wide, widely separate 

 above; antennal club (Fig. 2, D) slightly flattened, rather long, obtusely 

 rounded at tip, apparently 4-jointed (the third suture represented by only 

 a row of hairs), basal joint smooth, apical joint densely, finely, pubescent. 



FIG. 2 DENDROSINUS BOURRERIAE SCHWARZ SIDE VIEW AND HEAI> 

 X 10 ANTENNA AND FRONT LEG X 35. 



Prpnotum nearly as wide as long, sides slightly arcuate and strongly converg- 

 ent anteriorly; disc strongly convex, rather coarsely, densely punctate and 

 without trace of median carina; surface strongly depressed from before 

 middle at sides to middle of base, the depressed hind angles covered by ex- 

 aggerated forward production of the bases of the elytra which fit closely into 

 depression ; surface of depression (posterior declivity) nearly smooth, shin- 

 ing, finely transversely strigose, becoming coarsely punctate externally. 

 Scutellum very small, rounded, clothed with very fine whitish pubescence 

 and not depressed below the surface of the elytra. Elytra only slightly 

 longer than the thorax at middle; base of each elytron strongly oblique from 

 humerus to scutellum, overlapping the basal thoracic cavity and rather 

 strongly crenulate, humeri rounded, sides very gently curved, apices sep- 

 arately rounded, surface deeply, regularly striate, interstices Hat, rather 

 densely granulate at base, becoming asparately punctate posteriorly, the 



