162 H. C. FALL. 



prothorax, with the front a little more than twice as wide as the vertical diame- 

 ter of the eye in the female; but little narrower than the prothorax, with the 

 front less than twice as wide as the vertical diameter of the eve in the male. An- 

 tennae (fig. 25) in the female less than half the length of the body; joints 3-8 

 rather feebly serrate, all longer than wide, the fourth, sixth and eighth a little 

 more elongate than their fellows; the eighth longest and about three times as 

 long as wide; 9 11 each about one-third longer than the eighth and together 

 much shorter than 1-8 combined. In the male the antennae are half as long as 

 the body, joints 3-8 a little longer than in the female, but preserving the same 

 relative lengths; ninth joint almost twice as long as the eighth ; tenth and elev- 

 enth subequal in length, but more slender. Prothorax as wide as the elytra, 

 about two-thirds as long as wide, sides very feebly convergent anteriorly, side 

 margin narrow but entire, front angles right, hind angles undefined, the sides 

 rounding into the base. Elytra nearly four times as long as the prothorax and 

 more than twice as long as wide. Entire surface finely densely punctulate, the 

 head with sparse coarser punctures, which are replaced by small granules poste- 

 riorly; prothorax with numerous minute scattered polished granules; elytra 

 feebly striate, the striae finely punctate. Presternum before the coxte as long as 

 the thickness of the coxa. Fifth ventral segment rounded at apex in both sexes. 

 Length 5^-6 mm. 



California. Yuba ami San Luis Obispo Counties (Fuchs) ; Pasa- 

 dena (Fenyes) ; Los Angeles County (Koebele) ; Poway, San Diego 

 County (Blaisdell). 



2. O. cataliliae n. sp. — Closely similar to the preceding species in size, form 

 and color, but with the pubescence less abundant and more condensed along the 

 interspaces of the elytra, which appear vittate in consequence, though not very 

 conspicuously so. Front very little wider than the vertical diameter of the eye 

 in the male, but nearly or quite twice as wide in the female. The intermediate 

 antenna] joints (fig. 26) are shorter than in occidentalis, 4-8 being each sensibly 

 as wide as long; 9-11 linear and very elongate in the male, the ninth as long as 

 the five preceding, the three together much longer than 1-8. In the female (fig. 

 27) the ninth joint is a little longer than 7 and 8 combined, and as usual of 

 broader form than in the male. The sculpture is substantially as in occidentalis, 

 except that the elytral striae or sulci are still more feebly punctured, in some 

 specimens scarcely visibly so, except near the margin. Length 4.7 5.8 mm. 



California, Santa Catalina Island. 



This species occurred in some numbers in July, by beating the 

 branches and foliage of Heteromeles arbutifolia on the hills back of 

 Avalon. I have not thus far seen it in any other collection. 



OL.IGOMERCJS Redtenbacher. 



Body elongate, cylindrical, slightly depressed, with rather sparse 



or moderately abundant pubescence, intermixed in some species 



with very short erect hairs. Head rather strongly defiexed ; eyes 



round, moderate in size, larger as usual in the male. Palpi with 



