AMERICAN COLEOPTERA. 303 



Hab. — California. 



This species occurs at low elevations in Los Angeles County 

 (Pasadena) and at Riverside, also in Kern County. 



V. chloris sp. nov. — Brilliant green, elytra more roughly scabrous and 

 opaque than in the green and blue forms of stygica {smaragdina and dolosa) ; pu- 

 bescence whitish throughout, but sparse and inconspicuous above. Antennae 

 slender, the outer joints ( % ) more nearly cylindrical and fully twice as long as 

 wide. Length 7-12 mm. 



Hab. — California. 



I have seen numerous specimens collected in Kern and Tulare 

 Counties. 



C nigripilis sp. nov. — Black, elytra blue-black. Head and thorax pol- 

 ished, moderately punctate, elytra dull, scabrous, pubescence black, erect, and 

 far more abundant and conspicuous than in any of the other forms that have 

 passed as stygica. Antennal joints 8-10 subcylindrical, scarcely twice as long as 

 wide, 11th joint suddenly and very acutely pointed. Fifth ventral segment ( % ) 

 broadly, moderately, deeply emarginate and broadly impressed. Outer spur of 

 hind tibise less slender than in stygica. Length 8-4 mm. 



Hab. — Sierras of California, from Tulare to Tuolumne Counties. 



C. diflicilix sp. nov. — Black, head feebly shining, with small frontal pale 

 spot; thorax and elytra subopaque, the latter nearly glabrous. Head quadrate, 

 parallel behind the eyes, coarsely, moderately, closely punctate. Antennae ( % ) 

 slender, passing the middle of the elytra; joints 3-10 nearly equal in length and 

 very slightly increasing in width, the tenth twice as long as wide. Thorax dis- 

 tinctly narrower and smaller than the head, slightly transverse, sides rounded in 

 front, then nearly straight and distinctly convergent to base; disk feebly convex 

 and sparsely but not very finely punctate. Elytra nearly twice as wide as the 

 thorax, parallel, rather finely scabrous. Length 10-12 mm. 



Hab. — California, San Diego. 



Described from eight examples collected by Dunn in March and 

 April. The antennae are shorter in the female as is usual. In the 

 male the fifth ventral is broadly sinuate, the sixth triangularly 

 emarginate, the eraargination nearly as deep as wide and with the 

 angle at bottom narrowly rounded. Spurs of hind tibiae nearly as 

 in stygica. Difficilis is in most points of structure closely related to 

 stygica, but may be distinguished from black forms of the latter by 

 its rather more depressed form, smaller thorax and more slender 

 male antennse. 

 C iiififlelis sp. nov. 



A detailed description of this species is unnecessary, the only 

 differences of note between it and sphmricollis being those already 

 mentioned in the table. 



TKANS. AM. ENT. SOC, XXVII. AUG., 1901. 



