AMERICAN COLEOPTERA. 



123 



This species is more slender than lougUabris, the elytra are more 

 convex and the depression about the suture at the basal third is 

 lacking or feeble, f he subsutural row of fovefe is very faint. Vivid 

 green above and beneath ; elytral markings consist of humeral lunule, 

 almost or quite interrupted, middle band broad on the margin enter- 

 ing transversely and slightly sinuate at its slender extremity and a 

 large subapical dot. The structural characters are similar to those 

 of loiigilabri>< with which this species is closely related. It differs, 

 however, more than any of the varieties previously described and is, 

 I think, entitled to specific rank. The name is applied in many col- 

 lections to any green specimens of longilabris which is incorrect. 



I am indebted to Mr. Cliarles Fuchs for the loan of Prof Schaupp's 

 type of this species. 



In Mr. River's collection there is one specimen which is greenish 



black above. 



NiGROCCERULEA grOUp. 



Thorax convex, almost margined, slightly narrowed behind ; front hairy, labial 



pali)i % pale at base; elytra convex, indistinctly punctured with a row 



of small shallow foveolsE near the suture ; thorax short, scarcely rugose, 



with depressed hairs at the sides ; elytra sericeous, dark blue with only 



a small apical lunule iiigroceeriilea. 



€. nigrocfleriilea Lee, 1848, Ann. Lye. iv, 181, pi. 14, fig. 9; Schaupp, I. c. 

 pi. 1, fig. 23. 

 Length 13.5-14 mm==.54-.56 inch. 



Habitat— ^Q^N Mexico; Arizona; Colorado {fide Schaupp). 

 Dark blue or purplish all over, sericeous, surface above similar to 

 obsoleta, head glabrous, finely rugose ; labrum three toothed ; thorax 

 hardly rugose, hairy at the sides ; elytra obsoletely puuctulate, with 

 a row of foveol^ near the suture, which in some specimens are hardly 

 visible; the only elytral marking is a ftiint apical lunule. Prof. 

 Schaupp says, " resembles pundulata var. micans, but is stouter," 

 but the surface is so entirely different that this statement is rather 

 misleading. I have not seen any specimens except those in the 

 Leconte and Horn collections. The specimens taken by Prof. 

 Wickham at Alpine, Texas, which I thought might be nigroe(zrulea 

 are not this species. The following is a translation of Dr. Leconte's 

 description : 



"Purplish-black, sericeous shining, front bald slightly rugose, 

 "striate on each side, thorax moderately convex, longer than wide, 

 " sjnirsely rugose, clothed at the sides with sparse depressed white 



TRANS. AM. ENT. SOC, XXVIII. APRIL, 1902. 



