252 H. C. FALL. 



54. C gracile u. sp. — Red-brown, parallel, very nearly twice as long as 

 wide, not at all gibbous in profile; pubescence very fine and rather sparse. 

 Coarser punctures virtually lacking on the upper surface. Metasternum very 

 finely evenly punctulate and finely alutaceous without evident coarser punctures. 

 Inner lateral stria of elytra indistinct, the outer one very short. Eighth and 

 ninth autennal joints strongly transverse and triangular, the eighth almost 

 twice as wide as long. Front tibise not very deeply bisulcate; middle tibise not 

 sulcate. Length 1.7 mm. 



Hab. — Ohio (Cincinnati, Dury). 



Two examples only of this very distinct little species have been 

 seen. I suspect that both are males, and if so the strongly trans- 

 verse eighth and ninth joints of antenna? may prove to be peculiar 

 to the sex. 



55. C. maacum n. sp. — Red-brown to piceous brown, oblong-elliptical, 

 rather robust, fully three-fifths as wide as long, pubescence moderate. Lateral 

 strise of elytra finer than usual, the inner one often feeble or indistinct. Coarser 

 punctuation a little variable but usually fine and inconspicuous. Metasternum 

 punctured at middle Eighth antenual joint a little longer than wide, subpar- 

 allel apically. Front tibiae bisulcate; middle tibia} not sulcate. Length 1.7-2.5 

 mm. 



Hab. — California (Sonoma to Sail Diego). 



This is the commonest, most widely diffused and most variable of 

 the California species. Specimens are not rare that show the indis- 

 tinct subvittate elytra so common in nebulosum, but in the latter 

 the lateral strise are both deeply impressed. 



56. C. validuin n. sp. — Brown, oblong-elliptical, slightly more than half 

 as wide as long, not gibbous in profile, pubescence moderate. Coarser punctures 

 few and fine on the head, most evident near the eyes, distinct but not large at 

 the sides of the pronotum, a little larger on the elytra, especially at sides, where 

 they show a tendency to a serial arrangement. Metasternum finely very sparsely 

 punctured at middle, scarcely at all so at sides. Eighth antenual joint triangu- 

 lar, about one-third longer than wide. Front tibia? deeply bisulcate; middle 

 tibiae sulcate. Length 3.4-4 mm. 



Hab. — Texas (Belfrage), National Museum collection. 



In size and form this species is very similar to robustum and uni- 

 forme, both of which, however, have the middle tibiae sulcate. 

 There is observable in certain lights a very feeble median longitudi- 

 nal frontal elevation. This is in no example as distinct as in fasti- 

 giatum, and may easily be entirely overlooked. 



57. C COiifusuin n. sp. — Dark piceous brown, oblong-elliptical, a little less 

 than three-fifths as wide as long, not obviously gibbous in profile; pubescence 

 moderate. Coarser punctures small but evident on the head, numerous aud 



