NORTH AMKRICAN COLEOPTERA. Ill 



from the umboue piceous, legs yellow. Antennse yellow, louger than half the 

 body, joint 2 shorter than 3, this shorter than 4, 2 and 3 together longer than 4. 

 Head smooth, the transverse impression arched upward, not reaching the eyes. 

 Thorax one-fourth wider than long, sides arcuate, hind angles not prominent, 

 disc regularly convex, smooth ; scutellum black. Elytra about twice as long as 

 wide, sides nearly parallel, surface scarcely visibly punctate, the sutural and 

 discal stripes not reaching the apex. Length .20— .22 inch. ; 5—5.5 mm. 



Male. — First joint of anterior and middle tarsi slightly thickened. Last ven- 

 tral segment truncate at middle, the disc with a vague triangular depression. 



Femele. — Tarsi not thickened. Last ventral oval at tip. 



, The first joiat of the posterior tarsi is about a third the length of 

 ttie tibia and a little longer than the next two joints. 



No variation has been observed in the numerous sj3eciniens exam- 

 ined. 



This species is peculiar in being the only species in our fauna with 

 vittate or ornate elytra. 



Occurs in California in the coast range region south of San Fran- 

 cisco, at Tejou and near Yuina. 



li. Taricoriii<ii Lee, Trans. Am. Ent. See. ii, 1868, p. 57; brunneus Crotch, 

 Proc. Acad. 1873. p. 54.— Oval, slightly oblong, entirely pale yellow, varying to 

 pale castaneous, metasternunj sometimes piceous. Antennae two-thirds the 

 length of body, variable in color from entirely piceous to banded with the basal 

 joints pale, joints 2-3 small, nearly equal in length, the two together equal to 

 the fourth. Head smooth, the transverse impression straight, attaining the eyes. 

 Thorax about a third wider than long, slightly narrowed in front, sides feebly 

 arcuate, hind angles slightly prominent, disc smooth. Elytra about a third lon- 

 ger than wide, sides arcuate, surface sparsely punctate, the punctures varying 

 in distinctness in different specimens. Length .12 — .17 inch. ; 3—4.5 mm. 



Ifa^e.— Last ventral truncate at middle, with a linear incisure each side ex- 

 tending half the length of the segment; tarsi not dilated. 



Female. — Last ventral oval at tip. 



The first joint of the hind tarsus is nearly half the length of the 

 tibia, and much longer than the next two joints together. 



This species varies in color, as has been stated, from pale yellow 

 to brownish. The punctuation of the elytra may be nearly obsolete, 

 or foirly distinct. The antennse are often entirely piceous, or the 

 three basal joints may be pale. Many specimens occur with the 

 outer joints pale at base, while the three basal joints are entirely 

 pale. The legs are usually entirely pale, but specimens occur with 

 the posterior four tibiae and tarsi infuscate. The metasternum is 

 rarely piceous. 



L. brunneus Crotch was founded on specimens from the Zimmer- 

 man collection (one of them is now before me) discolored, probably 

 by age. 



TEANS. AM. BNT. SOC. XX. JUNE, 1893. 



