106 CHARLES W. LENG. 



Habitat. — Placer Co., Cal. (of which Lake Tahoe is the western 

 boundary). 



Differs, according to the author, from Edwardsii in being narrower 

 and more elongate, with less convex male elytra and in the form of 

 the labrum, the median lobe being more prominent and truncate at 

 apex. I consider this a variety of Edwardsii, the differences being 

 actual but of insufficient force to warrant the recognition of another 

 species in a genus already finely divided on feeble characters. 



O. califoriiicus Eschscoltz, Zool. Atl., 1829, i, p. 4, pi. 4, fig. 1 ; Thorns. I. c, 

 fig. 5-6 ; Lac. Gen. Atl., i, pi. 1, fig. 1 ; Lee. P. E. E., p. 27, pi. 1, fig. 3 ; 

 H. Edwards, I. c. ; Schaupp, /. c, p. 76, pi. 1, fig. 7 ; var. sculptilis Casey, 

 I. c, p. 292. 

 Length, 14-17 mm.=.56-.68 inch. 



Habitat. — California, west of Sierra Nevada, southward to Monte- 

 rey County. January to May. Sonoma Co., Marin Co., San Fran- 

 cisco Co., San Mateo Co., Santa Cruz Co., Napa Co., Alameda Co., 

 Contra Costa Co., Santaclara Co., North Monterey Co., up to 2000 

 feet. 



This is the first described species, and is immediately distinguished 

 from all the others by the deeply rugose or wrinkled prothorax. The 

 series of specimens in ray collection present many points of difference 

 in the relative proportions of the thorax and of the elytra, and I ex- 

 pect careful collecting would enable resident students to sepai'ate 

 distinguishable races inhabiting the various localities frequented by 

 this species. One of these races, sculptilis Casey, differing in the 

 rounded sides of the prothorax and feebly lobed labrum, has already 

 been described from a single male taken in the coast regions north of 

 San Francisco. 



O. liCCOiitei Horn, 1872, Trans. Am. Ent. Soc, iv, p. 143; Schaupp, I. c, vi, 

 p. 77, p], fig. 9. 

 Length, 15-16 inm.=.60-.64 inch. 



Habitat. — Southern coast range of California. Mcmterey Co., San 

 Benito Co., San Luis Obispo Co., Santa Barbara Co., and at Fort 

 Tejon in western part of Kern Co. April to July. 



This species is recognized by the form of the elytra, widest in front 

 of the middle and tapering thence gradually to the apex. It meets 

 californicus in the northern part of Monterey County, and is separ- 

 ated from it not only by the form of the elytra but by the less deeply 

 wrinkled prothorax. 



