152 GEO. II. BORN, M. D. 



Canada, Montana, Oregon and Vancouver, and southward along the 

 Rocky Mountains to Colorado. I have one specimen from Arizona 

 which I refer to this species. 



C planipennis Lee. — Form rather short, piceous or piceo-testaceous be- 

 neath, head and thorax usually paler than the elytra which have a distinctly 

 metallic surface lustre, the humeri and lateral margins testaceous. Head sparsely 

 punctate, the punctures not coarse except over the posterior border of the eyes. 

 Thorax one-third wider than long, narrowed at base, sides arcuate, sinuate 

 posteriorly, the hind angles distinct not prominent, margin" moderate in width 

 and slightly reflexed and with three setigerous punctures, disc convex, shining, 

 sparsely punctured and with but few erect hairs, median line distinctly impressed. 

 Elytra oval, piceous, surface distinctly metallic, humeral spot and lateral margin 

 testaceous, striate, striae finely punctured, intervals very little convex, irregularly 

 biseriately punctate, the punctures coarser than those of the striae. Prothorax 

 beneath coarsely punctured at the sides, body and abdomen sparsely punctured 

 or nearly smooth. Length .30 — .40 inch: 7.5 — 10 mm. 



Male. — Tarsi as in laticollis. Anal segment feebly emarginate with one seta 

 each side. 



Ftmale. — Anal segment entire, bisetose each side. 



This species is known among those with wide thoracic margin hy the 

 more convex disc of thorax and by the head and thorax paler than the 

 elytra, the latter distinctly metallic in the vast majority of specimens. 

 The humeral spot and pale margin are present in elegans, but this has 

 but one row of interstrial punctures. 

 Two varieties of this species occur : 



Var. brevipennis Zimm. — This is the form containing nineteen in twenty speci- 

 mens and is that described above. 



Var. planipennis Lee. — Of this I have seen but two specimens. The form is 

 essentially the same as the preceding. The color is pale brown with the base of 

 the elytra paler, the surface feebly shining without metallic lustre, the strice are 

 fine and finely punctured, the intervals flat and indistinctly punctured, the punc- 

 tures however larger than those of the striae. 



The synonymy of this species has been confused in a way almost 

 impossible to rectify without direct reference to the types. The history 

 is as follows : 



The first mention of this species is by Dr. LeConte by whom it was 

 considered cribricbllis Dej., (Ann. Lye. iv, p. 186). In the unpublished 

 manuscripts of Zimmermann, Dr. LeConte found a description of the pres- 

 ent species, that author having detected the incorrectness of the reference 

 to cribricoUis. Dr. Zimmermann named the species brevipennis, ( Trans. 

 Am. Ent. Soc. 1869, p. 243). In the meantime (New Species 1863, p. 6), 

 • Dr. LeConte described the form which I consider merely a southern 

 variety under the name planipennis which I retain as the older name. 

 Chaudoir erroneously adopts Kirby's name for the species. 



