AMERICAN COLEOPTERA. 187 



3. — Abdomen entirely black; surface not metallic. 



Abdomen beneath with segments more densely punctured, and with 



golden pubescence along the anterior border badipes. 



Abdomen beneath sparsely punctured, pubescence black and incon- 

 spicuous pletiralis. 



Abdomen more or less red; surface distinctly metallic. 



Last two segments of abdomen alone red sapliyriiliis. 



Entire abdomen beneath red luteipes. 



4. — Abdomen above very finely punctured, the second segment alone with a 

 narrow apical border of golden hairs, beneath very sparsely punctate, 



hairs short, black erythropterus. 



Abdomen more coarsely punctate, second segment narrowly bordered at 

 apex, 4 — 5 — 6 with spot of golden pubescence; beneath segments 3 — 6 

 with golden pubescence at the sides along the anterior edge of the 



segments Cfcsareus. 



B, — Head usually subtriangular, suddenly narrowed behind, hind angles ob- 

 tusely prominent. Sides of thorax arcuate posteriorly, never sinuate, 

 rarely parallel. 

 Thorax regularly and densely punctured over the entire surface, excepting 



at times a smooth median line 5. 



Thorax coarsely and irregularly punctured, with smooth spaces at the sides 



of the disc 12. 



5. — Abdominal segments beneath densely and finely punctulate along their 



anterior portion and with golden pubescence 6. 



Abdominal segments not densely punctulate, at most with the punctures 



very little closer anteriorly 7. 



6. — Abdominal segments above with golden pubescence at base and sides. 



Tulpiuus. 

 Abdominal segments with double row of velvety spots at middle. 



maculoi^us. 



7. — Thorax subopaque, the punctuation very dense, pubescence very evident. ..8. 



Thorax shining, pubescence scarcely evident, punctuation not very dense, 



the punctures being distinctly separate 11. 



8. — Elytra brownish or piceous, tip of abdomen always paler 9. 



Elytra black (sometimes with golden spot), abdomen black 10. 



9. — Eyes normal. Legs piceous. 



Last ventral segment above and the sixth beneath pale. Thorax with- 

 out smooth median line niyKticus. 



Fifth and sixth segments beneath pale. Thorax with smooth line. 



tarsalis. 



Eyes large, two-thirds the length of the head fieinoratus. 



10. — Abdomen above with double series of small velvety spots. 



Elytra entirely black, surface with simple punctures toiuentosus. 



Abdomen above without velvety spots. 



Elytra usually with large spot of golden pubescence, occasionally entirely 



black, surface scabro-punctate iOiSsator. 



11. — Body above brownish or piceous, not metallic cinnaniopterns. 



Body above piceous, head and thorax sometimes variegated with paler 

 spaces. 

 Abdomen piceous, segm. 1 — 5 beneath with lateral pale spots. ..comes. 



