192 J. L. LECONTE, M. D. 



Sexes similar; epistoma more strongly margined in front; body thinly 

 clothed with lanceolate pale scales, and sparsely pilose; prothorax 

 with sides oblique, slightly rounded ; 6 mm.; N. Y. ; Pa. 



8. trivialis Harold. 

 Sexes similar; epistoma narrowly margined, and slightly rounded in front; 

 body clothed with oval ochreous scales; prothorax wider in front of 

 the base, sides strongly angulated; 6 — 6.8 mm.; Atlantic region. 



9. mucorea Germ. 



8. — Sides of prothorax broadly rounded 9. 



Sides of prothorax strongly angulated; front and middle tarsi with two 

 claws ; black, pygidium and under surface densely clothed with round- 

 ed silvery scales; sides of prothorax, suture and margins of elytra 

 and two oblique branches with silvery scales; 7.5 — 8.9 mm.; Western 



States 10. limbata Lee. 



9. — Front and middle tarsi with two claws; brown, clothed with very small 

 scales, oval on the prothorax, narrow and hair-like on the elytra, 

 larger and metallic beneath ; 6.5 — 8 mm.; Atlantic region. 



11. inodesta Hald. 



Front and middle tarsi with but one claw; scales thinly placed, oval; 



7.5 mm. ; Mass 12. equina n. sp. 



1. H. Sackenii. — Black or brown, elytra brown, shining, punctured, 

 thinly clothed with moderately long acute, hair-like scales. Head densely 

 punctured, thinly clothed with small scales, epistome with parallel sides, 

 truncate in front, with the angles rounded. Prothorax not longer than wide, 

 sides oblique in front of the middle, then rounded, and nearly parallel to the 

 base, apex broadly emarginate, base oblique each side, broadly rounded at the 

 middle, front angles acute, hind angles nearly rectangular; surface densely 

 and finely rugosely punctured, pubescent with long yellowish hairs, and thinly 

 sprinkled with narrow white scales, which are nearly three times longer 

 than wide. Pygidium densely but feebly punctured, clothed with similar 

 scales having a silvery reflection. Beneath clothed with silvery scales, meta- 

 sternum with long yellowish hairs. Outer claw of front and middle tarsi 

 half as long as the inner one; front tibise tridentate, upper tooth feeble. 

 Length 9 mm. 



9 . — Middle tibiee with a distinct spur. 



California, Summit Lake, Sierra Nevada, Baron R. OstenSacken; 

 San .Diego. 



6. H. dispar. — Black, variably clothed with small rounded scales. Head 

 opake, densely rugosely punctured, not squaniose, thinlj' pubescent, epistome 

 rounded nearly in the arc of a circle. Prothorax a little wider than long, 

 narrowed from the base, but more strongly in front of the middle, apex strongly 

 emarginate, base oblique each side, feebly rounded at the middle; front angles 

 acute, hind angles obtuse, not rounded; surface thinly pubescent with short 

 erect black hairs. Elytra also with a few short black hairs. Pygidium and 

 under surface densely clothed with rounded silvery scales; metasternum 

 densely pubescent with white hair. Legs and claws as in the preceding. 

 Length 6.3—8 mm. 



-J, . — Prothorax, scutel and elytra very densely clothed with fulvous or 

 greenish scales; varies with the disc of the prothorax more or less naked. 



