I9I5-] F- H. Gravei^y : Coleoptera, IX. 521 



A slender almost cylindrical insect whose general russet brown 

 colour is produced by golden scale-like hairs — much coarser than 

 in D. bacillus — overlaying the dark brown integument, which is 

 further obscured between its numerous coarse tubercles by a paler 

 dull brown secretion. Length 8 mm. Maximum width of prono- 

 tum 2'2 mm. Maximum width of elytra 2'8 mm. 



The head is transverse, very coarsely and closely punctured 

 behind, less so near the anterior margin which is scarceh^ emar- 

 ginate. The dorsal surface is transversely depressed between the 

 eyes, and slightly elevated on either side in front of them. There 

 is a very distinct membrane between the anterior margin of the 

 head and the labrum, but the head and all parts belonging to it 

 are particularly deeply embedded in secretion, which must be re- 

 moved before any of their features can be seen. The labrum is 

 transversely oval, with a transverse elevation about half way 

 between the anterior and posterior margins ; behind this elevation 

 it is smooth and polished ; in front, it bears a few fine punctures 

 and hairs, the latter forming a dense fringe on the margin. 



The pronotum is inflated in front of its narrowest part, which is 

 very near the raised posterior margin. Its middle line is depressed 

 throughout, especially in front and behind. The depression in 

 front is much deeper than in D. bacillus. A pair of stout conical 

 processes project laterally beside the base of the head from the 

 ventral part of the anterior margin. 



The elytra are almost paraUel-sided, slightly widest at a dis- 

 tance of about two- thirds of their length from their anterior end, 

 gradually tapering behind. They are marked throughout by 

 parallel lines of tubercles ; of these the two innermost are discon- 

 tinuous, the next five are much coarser, with their tubercles united 

 to form more or less continuous ridges, and the last two, though 

 coarse and distinct behind, are obsolete in front. 



The loivey surface of the head is marked centrally by a series 

 of transverse grooves ; laterally it is coarsely and closely punctured. 



The prosternum is marked with irregular, coarse, shallow 

 punctures. In front of the coxae it is T-shaped, with all its edges 

 slightly raised; behind them it is hour-glass shaped. 



The mesosternum is depressed in front, where it is coarsely 

 roughened except in the middle line which is strongly keeled and 

 highly polished. Behind it is elevated to the level of the meta- 

 sternum and is rough throughout. 



The metasternwn and abdominal sterna are covered with golden 

 scale-like hairs such as occur on the upper surface. A depression 

 borders the smooth and hairless rims of the posterior coxal 

 cavities. 



The antennae are 11- jointed. The two basal joints are sub- 

 spherical, a little longer than broad, the first a little larger than the 

 second which is inserted at an obtuse angle. The third joint is 

 slender, about three times as long as broad, distinctly thickened 

 distally. The next three joints are alike, scarcely longer than 

 broad. The seventh joint is similar, but more distinctly thickened 



