Coleopterological Notices, VI. 599 



and straight, very gradually oblique and rounded toward apex ; 

 sutural angles obtuse and rounded ; disk not very coarsely but 

 strongly, very sparsely and rugosely punctate, the interspaces 

 shining and minutely, feebl}' rugulose. Under surface very sparsely 

 pubescent, the legs long and slender. Length 6.5 mm.; width 1.4 

 mm. 



Nebraska and northward. The male, which is the only sex 

 which I have seen, has a very large and deep anteriorly arcuate 

 excavation at the apex of the fifth ventral, the bottom of the ex- 

 cavation gradually smooth, level, polished and glabrous poste- 

 riorly, with a rectilinear and transverse posterior margin, which is 

 less apical than the lateral lobes of the segment ; the genital seg- 

 ment is broadly sinuate at apex throughout its width, flat, with all 

 but an abruptly limited lateral area pale and subcoriaceous. The 

 allusion to cinereous hairs by LeConte, in referring to the vesti- 

 ture of this species, is altogether erroneous. 



2. D. teiiuiformis Horn— Trans. Am. Ent. Soc, VIII, 1880, p. 150. 



The body in this species is extremel}^ slender and elongate, dark 

 greenish-bronze in color and subopaque above, bluish and shining 

 beneath. Head coarsely punctured, the front triangularly im- 

 pressed. Prothorax a little narrower than the head, nearly twice 

 as long as wide, with the sides parallel ; disk with an impressed 

 median line. Elytra a little wider than the prothorax with the 

 sides straight, nearly three times as long as the head and pro- 

 thorax, the disk rather coarsely, densely and irregularly punctate, 

 the sutural margin slightly elevated. licnth 4 mm. 



Texas, — Cab. Horn. This species somewhat resembles the 

 European D. linearis in form, according to Dr. Horn ; I have seen 

 no representative, and the above statements are taken from the 

 original description. 



Melyrini. 



This tribe is but poorly represented in the United States by a 

 single small genus on each side of the continent. There can be no 

 doubt at all that both of these genera are ditferent from the Euro- 

 pean Melyris,and I have therefore thought best to give them sepa- 

 rate names; the}' are mutually ver}' distinct themselves, and may 

 be known b}' the following characters : — 



