﻿182 Journal New York Ent. Soc. [Voi. in. 



11. Last joint of palpi cylindrical, truncate at tip, mostly larger species 12 



Last joint of palpi elongate oval, scarcely truncate, smaller species 38 



12. Metathoracic episterna short 13 



Metatlioracic episterna long 25 



13. Prosternum not margined behind 14 



Probternum margined, thorax broader posteriorly 24 



14. Outer striae of elytra finer ; prothoracic margin fine 15 



Outer strips of elytra nearly or quite as deep as inner 16 



15. Striae of elytra smooth obscurus. 



StriK punctured ventralis. 



16. Prothorax narrower behind 17 



Prothorax nearly quadrate, elytral striae subcatenate 22 



Prothorax broader behind, elytral stria? normal 23 



17. Two dorsal punctures 18 



Four dorsal punctures 21 



18. Basal foveae deep linear lachrymosus. 



Basal fovene large, broad 19 



19. Hind angles carinate 20 



Hind angles not carinate, fovea not tuberculate relictus. 



20. Fovea not tuberculate coracinus. 



Fovea with tubercle stygicus. 



21. Purplish, hind angles carinate superciliosus. 



Dull black, hind angles not carinate moestus. 



22. Basal fovex broad, deep, punctured, thoracic margin broader at base, hind 



angles obtuse punctatissimus. 



23. Side margin and basal foveae punctured sculptus. 



Side margin and basal foveae not punctured fallax. 



24. Above iridescent, thorax flattened, narrowed anteriorly permuildus. 



Above black, thorax convex more quadrate hamiltoni. 



25. Basal joints of antennas distinctly carinate 26 



Basal joints of antennae simple 27 



26. Legs black; above green, polished dorsal punctures two, body beneath 



impunctured sayl. 



Legs usually reddish ; body above green or blue not polished, beneath 

 punctured lucublandus. 



27. Dorsal punctures two ; form depressed, thorax broad, narrowed behind, rounded 



at sides, hind angles rounded, basal impressions broad, punctured, elytral 



striae deep, finely punctured, interstices nearly flat submarginatus. 



Dorsal punctures three or four 28 



Dorsal punctures five or six, foveate 36 



28. Hind angles of thorax carinate, basal foveae bistriate 29 



Hind angles of thorax not carinate, basal foveae single 32 



29. Thorax much narrowed posteriorly, angles rectangular and prominent 30 



Thorax less narrowed posteriorly, angles smaller slightly prominent, basal foveae 



punctured 31 



30. Basal fovea? not punctured, elytral stria? fine ebeninus. 



