AMERICAN COLEOPTERA. 107 



Var. elong^atiis Casey, I. c, p. 293. 

 Leugth, 16.5-17.5 mm^.66-.70 inch. 



Habitat. — Near San Francisco, California; collected by George 

 W. Dunn. 



Differs from the type in having tlie elytra evenly elliptical and 

 widest at the middle, and from californicns in having the sides of 

 prothorax strongly rounded behind the middle and the surface of 

 the thorax less deeply wrinkled. It is an intermediate form, having 

 some of the characters of each species, and is probably represented 

 in all good Californian collections. Specimens from the Sierra Ne- 

 vada should not be placed here. 



O. seqiioiaruin Crotch, 1874, Trans. Am. Ent. Soc, v, p. 73 ; Scliaupp, /. c, 

 p. 77, pi. 1, fig. 8 ; pundifrons Casey, I. c, p. 291 ; conflnens Casey, I. c, 

 p. 291. 

 Length, 14-18 mm.=.56-.72 inch. 



Habitat — Calaveras Big Trees, Calaveras Co. (5000-6000 feet) ; 

 Tuolumne Co., Mariposa Co., 10 miles north of Yosemite (5000- 

 10,000 feet). The most southern locality is Crane Flats, overlook- 

 ing the Yosemite valley. Another form is found in Sierra Co., 

 Nevada Co., Plumas Co. and Placer Co. (Forest Hill), at elevations 

 of 2700-3500 feet. 



This species is broader and stouter; the labrum is produced in front 

 instead of being transversely truncate or convex ; the thorax is wrinkled 

 all over, but not as deeply as in californicus ; the median part of the 

 head in front is for a little space without wrinkles and more or less 

 punctate. It varies considerably in outline and it would be possible 

 to divide it into several varieties. 



Var. Hornii Lee, 1876, Trans. Am. Ent. Soc, v, p. 157; H. Edwards, I.e.; 

 Schaupp, I. c, p. 76, pi. 1, fig. 6. 

 Leugth, 16.5 mm. =.66 inch. 



Habitat. — Yosemite, California ; 3700 feet. June. 



Very broad, thorax less narrowed behind, almost quadrate ; elytra 

 broadly ovate, much rounded on the sides. An extreme form of 

 sequoiarum. 



O. Audoiiiiii Eeiche, Ann. Fr., 1838. p. 300, pi. 10, fig. 2 ; Thorns. Mon., p. 16, 

 pi. 3, fig. 7-8 ; Lee. /. c, p. 27, pi. 1, fig. 2; H. Edwards, I. c. ; Schaupp, 

 I. c, p. 76, pi. 1, fig. 4. 

 Length, 13-18 mm.=.52-.72 inch. 



Habitat. — Foot hills and mountains of California, Oregon, Wash- 



TKANS. AM. ENT. SOC, XXVIII. MARCH, 1902. 



