AMERICAN COLEOPTERA. 191 



•aiigles broarlly rounded. Elytra faintly piceous with Eeneous tinge, margin and 

 suture paler, disc faintly sub-tricost_fe coarsely punctured, sparsely pubescent. 

 Body beneath sparsely punctu-' I, moderately densely pubescent. Legs testa- 

 ceous, tibias and tarsi usual'y darker. 



The males have the outer spur of the hind tibiae much broader 

 than the inner, truncate at tip and distinctly twisted. 

 Occurs iu the Middle States and Canada. 



D. valida, Lee. — Resembles the preceding in form and sculpture and 

 differs as follows: — Head, thorax, body beneath and legs % piceous, 9 rufous. 

 Elytra brilliant metallic green with very narrow pale margin. Hind tibiae 'J, 

 with the outer spur very little stouter than the inner, not twisted but obtuse 

 at tip. 



Occurs in California and Oregon. 



D. sulcata, Lee. — Piceous, elytra deeply bronzed. Head coarsely and 

 densely punctured, frontal suture impressed, occiput with vague chevron-like 

 impression, clypeal margin feebly reflexed. Thorax very sparsely punctured, 

 the punctur3s being more densely crowded in the median impression, and a 

 vague fovea on each side, surface sparsely pubescent. Elytra coarsely punc- 

 tured, surface deeply bronzed, sparsely pubescent. Body beneath sparsely 

 pubescent and hairy. Legs testaceous, hind tibiae and tarsi darker. 



In the male of this species, the hind tibial spurs are slender 

 and equal. 



Occurs in New Mexico. 



D. pnsilla, Lee. — Piceo-testaceous. Head rugulose, frontal suture very 

 vague, clypeus subtruncate, sides slightly convergent, margin moderately re- 

 flexed. Thorax with fine, very sparsely placed punctures, median groove 

 moderately impressed, surface rather shining, sparsely pubescent. Elytra 

 punctured, sparsely pubescent, surface with very faint bronze tinge. Body 

 beneath sparsely punctured and pubescent. Legs piceo-testaceous, hind tibise 

 and tarsi darker. 



In both this species and the preceding, the pubescence has a silken 

 aspect. The hind tibial spurs are slender and similar in the sexes. 

 Occurs in California. 



Bibliographi/. 



D. elongata, Fab., Ent. Syst. L 2, p. 170 ; Lee, Journ. Acad. 1856, p. 279. 



elongatula, Schonh., Syn. Ins. I. 3, p. 210. 



linearis, 9,Gyll., Sch. Syn. Ins. I. 3, App. p. 103; Burm., Handb. IV. 2, p. 

 74 ; Lee, loc. cit, 



hexagona, Germ., Ins. Spec, Nov., p. 124. 



virescens, Kby., Fauna Am. Bor. IV., p. 134. 



backu, t Burm., Handb. IV. 2, p. 536. 

 D. subvittata, Lee, loc. cit., p. 279. 



virescens, var. c, Kby., loc. cit. 

 D. canadensis, Horn, n. sp. 



D. testacea, Kby., loc. cit., p. 135; Lee, loc. cit., p. 279. 

 D. pallens, Lee, Proc. Acad., 1859, p. 283. 



