AMERICAN COLEOPTERA. 



183 



Larger, ferruginous, tubercle of first dorsal segment triangular, the Hues 

 approximate and divergent; middle fovea of prothorax distinct; % last 

 ventral with a deep, sharply defined, but not large oval fovea ; 1.8 mm. ; 



Missouri; one specimen 21. trigona n. sp. 



7. — Antennae % 9 alike '^• 



Antennae % with joints variously enlarged 9> 



8.— Head and prothorax densely punctured ; color blackish, legs yellow ; 1 mm. ; 



III. • N. T 22. scabra Brend. 



Head and prothorax punctulate, color ferruginous, or darker with red 

 elytra; % last ventral broadly concave; 1 mm.; Mass.; HI.; La.; 



Fia 23. puiicticollis Lee. 



^._Dark brownish red, legs and sometimes elytra paler 10. 



Ferruginous, antennae more slender 1-- 



10. — Frontal fovea normal ^•• 



Frontal fovea very large; % with fourth antennal joint widely dilated, 

 5—8 small, closely united, broader than long, ninth and tenth uearly 



as wide as eleventh; 1.2 mm.; Cala., Los Angeles 24. sagas n. sp. 



11. '^ with fifth antennal joint moderately dilated, sixth scarcely longer than 



seventh;!— grounded; 1.2 mm.; LakeSuperior...25. propiaqua -Crec. 



% with fifth antennal jointdilated, sixth larger than the following, rounded ; 



7—9 large, transverse; hind tibiae flattened; 1.2 mm.; Vauc. ; B. Col. ; 



Colo 26. albiouica3/o!;.scA. 



52.- Frontal fovea normal; -^'with fifth and sixth antennal joints somewhat 

 stouter, elongate-oval; ninth and tenth nearly as wide as eleventh; 

 hind tibia curved and flattened ; last ventral slightly flattened ; 1.5 mm. ; 



Texas; Fla > 27. coinplecteus n. sp. 



Frontal fovea very small; the two other foveae smaller than usual; '^ ? 



1.2 mm.; Arizona; one specimen 28. subtilis Z>ec. 



13. —Front with two small punctures; color piceous, elytra bright red, apical 

 margin blackish, legs ferruginous; % first and second antennal joints 

 large, third and fourth very small, fifth larger rounded, sixth and 

 seventh transverse, pointed inwardly, eighth smaller, ninth larger, 

 tenth nearly as wide as eleventh; ventral segments flattened at the 



middle: 1.2 mm.: California; Los Angeles 29. deformata n. sp. 



Front transversely impressed between the antennae ; color dark ferruginous, 

 legs paler; % antennae stout, joints fi— 8 narrower than fourth and 

 fifth; last ventral flattened and slightly concave; 1.2 mm.; Cala., 



San Jose 30. coinpar Lee. 



Front not impressed: prominent, subacute, perpendicular at apex, uniform 

 rufous; % thinl and fourth ant«nnal joints small, fifth and sixth thick, 

 longer than wide, 7 — 9 smaller and narrower, tenth wider, eleventh 

 elongate-oval; 1.2 mm.; Texas; (Belfrage) 31. tnmida n. sp. 



E.—Head without foveae; first dorsal with two distant short lines. 



Prothorax with small lateral foveae upon the declivous sides, middle 

 fovea -very small; elytra with distinct but abbreviated dorsal stria, 

 uniform rufous; 1.1mm.; Middle and Southern States ; wiVjM^a Brendel. 



32. toiueutosa Aubc. 



Prothorax without foveae, elytra with obsolete dorsal stria; dark rufous; 



1.5 mm.; Iowa; one specimen 33. iuoruata ^'-cnrf. 



