124 CHARLES W. LENG. 



" hairs, elytra less convex, obsoletely punctate, impressed towards 

 "suture with a row of blue fovese, obsoletely white apical lunule; 

 "beneath sparsely clothed at the sides with erect white hairs; 

 " labruin white in both sexes, tridentate, obsoletely in the male but 

 "distinctly in the female; palpi male pale at base. Length .50 to 

 "57." One pair found near Bent's Fort on the Arkansas River. 

 (About 100 miles east of Pueblo, Col., and between Upper Dry 

 Creek and Lower Dry Creek.) 



BowDiTCHi group. 

 C. robust a n. sp. 



Form stout; dull green above, varying to blackish blue, dark blue shining 

 beneath; elytra immaculate; head glabrous, finely striate in front and between 

 the eyes, finely granulate at the back; labruni short, strongly three toothed; 

 thorax broader than long, flat, almost margined, rounded at .the sides, slightly 

 narrower behind, surface visibly punctulate; impressions moderately deep, 

 brighter at base ; a fringe of hair on each side ; elytra broad, conjointly rounded 

 at apex, not serrulate, uniformly finely punctate; a few foveolje in the subhumeral 

 impressions and a row on each elytron near the suture. The elytra bear vague 

 shallow impressions about their middle. Beneath scarcely hairy, a few liairs on 

 the flanks of the thorax, on the pleurte, coxse, legs and palpi ; none on the abdomen. 



Length 12 mm. ^.48 inch ; width, 4.5 mm. =.18 inch. 



Habitat.— A\\)\ne and Marfa, Tex. ; Deming, N. Mex. July. 



This insect was first distributed by Prof. Wickham as a robust 

 form of micans ; later, on an erroneous determination of mine, as 

 nigrocoerulea Lee. On comparison with Dr. Leconte's type I find 

 its elytra are scarcely punctured, while in this species they are de- 

 cidedly so, and the entire form is in nigro&erulea much flatter. 

 The comparison by Leconte and Schaupp with punctulata seems 

 misleading. 



C Bowditctai n. sp. 



Form robust; greenish-black above, dark blue beneath ; elytral markings con- 

 sist of broad marginal Hue, expanded at the middle and with a short oblique 

 branch representing the middle band. The elytra are sericeous and the punc- 

 tures indistinct towards apex, where the foveoUe also become very shallow. Other- 

 wise its characters are identical with the preceding to which it is closely related. 



Length 11 mm. ^.44 inch ; width, 4. .5 mm. =^.18 inch. 



Habitat. — Vicinity of Durango, Colo. July and August. 

 Two specimens collected by Mr. Fred. C Bowditch, one now in 

 his collection and one in the collection of Mr. Samuel Henshaw. 



SCUTELJ.ARIS group. 

 Thorax convex, not margined, slightly narrowed behind; front hairy in %, 



