PROC. ENT. SOC. WASH., VOL. 21, NO. 2, FEB., 1919 39 



which are contiguous. Mesonotum thickly punctured and pubescent at 

 sides, with a median smooth surface. Front coxal cavities transverse, very 

 strongly angulated, and broadly open behind. Middle coxal cavities open 

 externally. Hind coxae prominent, not inclosed by the side pieces. Legs 

 moderate in length ; femora not strongly clavate ; tibiae slender. 



Genotype. Elatotrypes hoferi Fisher. 



This new genus belongs to LeConte & Horn's tribe Callidiini 

 and is closely related to Hylotrupes, Callidinm and Xylocn'n.^, 

 but differs from all of these by having the femora not strongly 

 clavate. From Hylotrupes and Callidium it differs by having the 

 sides of the mesonotum densely punctured and pubescent. From 

 Hylotrupes it also differs by having the front coxae contiguous and 

 from Callidinm by the prothorax having dorsal callosities. It 

 also differs from Xylocrius by its very depressed form and the more 

 slender antennae. 



Elatotrypes hoferi, new species. 



Female. Elongate, very much depressed, piceous-black, sparsely clothed 

 with irregularly placed whitish pubescence, which gives it a cinereous ap- 

 pearance. Head coarsely and densely punctured. Eyes rather small, widely 

 separated, transverse, and only moderately emarginate. Antennae slender, 

 reaching beyond the middle of the elytra ; first joint thickened at apex ; second 

 about one-third as long as the first; third slightly longer than the first; fourth 

 to seventh subequal, and about as long as the first; eighth about three-fourths 

 as long as the first; ninth about one-half as long as first; tenth and eleventh 

 slightly shorter and wider than the ninth, the last being about three-fourths 

 as wide as long, with the tip rounded. Prothorax depressed, nearly twice 

 as wide as long; front angles rounded; sides strongly rounded and very much 

 narrowed towards the base; surface with three narrow, shining callosities, 

 reaching from the apex to base, the median one less distinct, between these 

 and the sides, the surface is densely and coarsely punctured, and sparsely 

 clothed with long semi-erect whitish hairs. Elytra at base about us wide 

 as prothorax, twice as long as wide, slightly wider at middle with the tips 

 separately rounded; surface reticulately rugose, not noticeably punctured, 

 but clothed with irregular patches of semi-erect whitish pubescence. Pros- 

 ternum shining, very finely, transversely rugose at middle, scarcely punc- 

 tate, with long, sparse, inconspicuous hairs. Body beneath shining, sparsely 

 punctate, and clothed with recumbent whitish pubescence. Abdomen 

 with fifth ventral segment a little longer than the fourth and broadly roundi-d 

 at apex. Femora only slightly clavate. Tibiae slender, about twice as 

 long as the tarsi. First joint of posterior tarsi slightly longer than joints 

 two and three united. 



Length 7 mm., width 4 mm. 



