AMERICAN COLEOPTERA. 197 



3. — Broneed, scutellum flat; prothorax not polished, sides, antennse and legs 

 testaceous; chalconatus M.a.nn. ; ceneolus Lee; 1.4 — 2 mtn.; Atlantic and 



Pacific regions 1. auratus Fabr. 



Varies a. Blue, with sides of prothorax and antennae testaceous, (Suft'r.)- 



Indigo, or greenish blue ; scutellum slightly elevated behinil ; antennse and 



legs piceous, the former testaceous at base ; 2 mm. ; Gala. ..2. erasiis n. sp. 



4. — Scutellum flat; scutellar lobe of prothorax bideutate 5. 



Scutellum elevated behind fi. 



5. — Black, head, prothorax, antenna and legs dull reddish-yellow or brown, 



elytra bluish with bronzed lustre; 1.5 mm.; Ga 3. levis Hald. 



Testaceous, with a slight bronzed lustre; 1.5 mm.; Fla...4. squaleas Suff'r. 



6. — Prothorax smooth 7. 



Prothorax distinctly puuctulate; body elongate-cylindrical ; color olive- 

 brassy, auteunse and legs dull ferruginous; 2.7 mm.; Garland, Colo. 



5. eeriigiiiosus n. sp. 

 7. — Dark bluish-green, antennse and legs piceo-testaceous ; 2— 2.7 mm.; L. S. ; 



111.; Ga 6. catarios SuS'r. 



Blue, antenuffl and legs yellow; 2 mm.; Ks 7. pallidicoruis SuS'r. 



TRIACHIJS Lee. n. g. 

 This genus contains Oryptocephali of very small size (1 — 1.2 mm. 

 long), in which the claws are broadly appendiculate, the antennae of 

 moderate length, about half as long as the body, with the last five 

 joints broader. The eyes are very feebly emarginate. The presternum 

 is flat, quadrate, not wider than long, margined at the sides, truncate 

 behind, with the angles well defined, but not prolonged. The strise 

 consist of small punctures, regularly arranged, and the outer one is 

 deeply impressed, but does not extend around the apex except as a 

 row of punctures; the marginal stria is also deep. The impression 

 of the fifth ventral segment of the $ is elliptical and not deep. 

 The color varies from piceous to testaceous, and the body is oval 

 and convex. 



Prothorax smooth, feebly punctured at the sides 2. 



Protliorax sparsely finely punctured, more deeply at the sides 3. 



2. — Piceous, legs paler, inner elytral striae almost obliterated; Va. ; Fla. 



1. atoiiins SuS'r. 



Testaceous yellow, elytral striae equally distinct; Fla 2. ccriuns n. sp. 



3. — Prothorax not margined at base; 111.; Ks 3. TacuiiS n. sp. 



Prothorax with a row of punctures at base, which is finely but distinctly 

 margined; OTal, convex, testaceous, elytra clouded with brown; Texas. 



4. postrcnius n. sp. 



CRYPTOCEPHALUS Geofl^roy. 



The species of this genus are very numerous, and in some of the 



groups are rather indefinite in character, so that it is quite possible 



more careful revision with increased collections may still farther 



reduce the number of species below the limits I am now warranted 



