AMERICAN COLEOPTERA. 



189 



finely rugulose. Body beneath sparsely punctured and finely pubescent. Legs 

 testaceous. 



This species, of which I have seen but one female, resembles the 

 preceding, but is shorter and more robust, and with the margin of the 

 clypeus very narrowly reflexed. The basal and sub-apical lines are 

 still more obliterated. 



One specimen, California, (Leconte). 



D. Crotchii, n. sp.— Form slender as in subvittata, color rufo-piceous, elytra 

 bright metallic green with very narrow pale border, legs testaceous or rufo- 

 testaceous. Head piceous, clypeal margin paler, surface moderately densely 

 punctured, sparsely pubescent, frontal suture impressed, clypeal margin moder- 

 ately reflexed. Thorax piceous, form of subvittata, moderately densely punc- 

 tured, sparsely pubescent, sub-apical line feebly impressed, basal marginal line 

 nearly obsolete. Elytra rather finely punctured, punctures nearly obliterated 

 by the fine transverse wrinkles, surface finely pubescent. Body beneath pice- 

 ous, sparsely pubescent. Legs testaceous or piceo-rufous. Legs and form of 

 subvittata. 



This species begins a small series, the members of which are ex- 

 tremely difficult to separate in description. The present species is 

 more especially distinguished from those which follow, by the elytral 

 sculpture and the feeble marginal thoracic lines. At first sight the 

 elytra will be seen to present a much less shining surface. 



Several specimens were collected by myself in the high Sierras 

 of California, and others subsequently by my lamented friend G. R. 

 Crotch, in whose memory it is named. 



». Baokii. Kby.— Head, thorax, body beneath and legs nearly black, 

 elytra bright green or bronze, with at most a very narrow paler margin. 

 Head black, moderately densely and coarsely punctured, frontal suture im- 

 pressed, clypeal margin narrowly reflexed. Thorax moderately densely punc- 

 tured, espe'cially at the sides. Elytra coarsely but not closely punctured. Body 

 beneath sparsely pubescent and punctured. 



Specimens of this species rarely occur with the elytra more or less 

 testaceous, these must be considered partially immature, the thorax is 

 however always black, and the clypeal margin never pale. 

 Occurs in Canada and northward, also in Utah and Oregon. 



I>. fnscula, Lee— Rufo-testaceous, elytra piceo-seneous with moderately 

 broad pale margin. Head moderately densely and coarsely punctured, sparsely 

 pubescent, frontal suture impressed, clypeal margin moderately reflexed. 

 Thorax sparsely but moderately deeply punctured, intervals shining, sparsely 

 pubescent. Elytra piceo-£eneous with moderately broad pale limb, surface very 

 coarsely punctured, sparsely pubescent. Body beneath sparsely punctured 

 and pubescent. 



Specimens often occur with the body beneath, head and thorax 

 piceous, legs rufo-piceous. The especial characteristics of this species 



