218 GEO. H. HORN, M. D. 



Surface not metallic, brownish testaceous, autennre pnle, leps colored as 



upper surface; elytra less distinctly iMinctate ignita var. 



6 — Transverse impression of thorax deep, humeral angles of elytra well marked, 



a depression within the umbone 7. 



Transverse impression feeble or nearly absent; humeral angles of elytra 



rounded 10. 



7. — Transverse impression terminating at either end in a fovea; form rather 



short, as in ir;?i)7rt 9. evicta. 



Transverse impression gmdually evanescent at its extremities 8. 



8. — Lai-ger species, thorax barely wider at base than apex ; last ventral % with 

 a deep longitudinal impressed line. 



Brilliant cupreous, with violet or purplish reflections 6. cariiiata. 



Blue, head more prominent, form more robust 5. vi<*aria. 



Smaller species of the form of ignita, thorax distinctly wider at base ; last 



ventral of % with at most a slight concavity 9. 



9. — Thorax not visibly punctate, elytra relatively coarsely punctate ; cupreo- 



feneous 12 aiiioeiia. 



Thorax alutaceous and finely punctulato, elytra alutaceous and finely punc 



tulate, with a scabrous aspect ; greenish bronze 10. Jerngiii«!*a. 



Thorax quite coarsely punctate, elytra with coarse punctures and finer in- 

 termixed ; cupreo-geueous 11. oboliiia. 



it). — Species of robust facies and rather large size. 



Moderately shining, punctuation indistinct, frontal carina and tubercles 



feeble 7. caliiuriiica. 



Subopaque, punctuation evident, frontal tubercles and carina well marked. 



8. obliteratu. 

 Species oblong, not very convex, the form recalling that of many Luperus.. 11. 

 11. — Antenna:' slightly compressed, apparently thicker externally, the fourth 

 joint obviously longer than third. 

 Brownish bronze, last ventral % with a long, but shallow median im- 

 pressed line; elytra very distinctly punctate 14. toiubaciiia. 



Blue, last ventral % with a very deep impression extending half the 

 length of segment ; elytra finely moderately punctate. 



13. iuarevagaii!>». 

 Antennae slender, not thicker externally, the fourth joint equal to or 

 scarcely perceptibly longer than third. 

 Last ventral % with a deep longitudinal impression extending from apex 



half to base; elytra indistinctly punctulate 16. punctipeiiuis. 



Last ventral % flattened near apex, a feeble longitudinal impression, 

 sometimes merely a smooth line; elytra scarcely visibly punctate. 



IS. roliacea. 

 Last ventral 'J, as in foliacea. elytra relatively coarsely punctate. 



15. tiiicta. 

 Last ventral ^ not flattened, a feeble impression near the apex ; elytra 



scarcely visibly punctate 17. lazuli iia. 



12 — Entire upper surface uniform in color and with metallic lustre. 

 Thoracic impression fine, but well marked. 



Thorax not wider at base than apex ; abdomen and hind femora piceous. 



20. Tusicoseiiea. 



