49 



16. — Basal impressions of prothorax small. 17- 



Basal impressions deep, punctured ; eiytral striae strongly punctured, 

 dorsal punctures 3 ; bronzed-black, antennae, tibiae and tarsi brown. 



49. ferreus. 

 17. — Eiytral striae impuncLured. IS. 



Elytra! stria? punctured, dorsal punctures 5. 19- 



18. — Legs yellow; dorsal punctures 3. 50. basalis. 



Legs yellow, thighs darker ; dorsal punctures 5-6. 51. nutans. 



19. — Prothorax slighty wider than long. 52. striatopunctatus. 



Prothorax longer than wide. 53. crenulatus. 



20. — Thighs dark, tibiae and tarsi yellow : dorsal punctures 3. 54. albicrus. 



Legs ferruginous; dorsal punctures 5. 55. picticomis. 



21. — Dorsal punctures 5-7, large : sides of prothorax and elytra yellow. 



56. maculicollis- 

 var. a. Entirely blackish piceous. 



Dorsal punctures 5-7, small : elytra piceous with metallic gloss. 



57. variolatus, 

 22. — Base of prothorax strongly emarginate. 58. sulcatus. 



Base <>f prothorax feebly emarginate. 59. striatus. 



23. — Dorsal punctures large, foveate. 24. 



Dorsal punctures of usual size. 25. 



24. — Coppery bronze, antenna? and legs black. 60. perforatum. 



Green-bronze, not shining, base of antennae and legs brown. 



61. octopunctatus. 

 25. — Antennae and legs entirely black, side margin of prothorax narrow. 26. 



Base of antennae brown, sides of prothorax more reflexed. 62. placidus. 

 26. — Hind angle of prothorax much rounded, color bright-bronze. 27. 



Hind angles obtuse, rounded ; color black, feebly bronzed. 63. fossiger. 



Hind angles of prothorax obtuse, not rounded: color green bronze, not 



shining : form more depressed. 64. deplanatus. 



27. — Prothorax narrower than the elytra. 65. cupreus. 



Prothorax not narrower than the elytra. 66. crassicollis. 



28. — Elytra with 3 small dorsal punctures. 29. 



Elytra with 4-5 large foveate dorsal punctures. 30. 



29. — Elytra! stria? deeper, apex subtruneate, consimUis,l Lee. 67. vicinus. 



Eiytral stria? finer, apex obliquely sinuate. 68. obsoletus. 



30. —Smaller, subopake, dorsal fovea? 4. 69. quadripunctatus. 



Larger, surface mottled, dorsal fovea? 5. 70. bembidioides- 



E. — Prothorax rounded-oval, margin very narrow, basal impress- 

 ions piiTictiform, elytra with 3 dorsal punctures. 



Tarsal grooves wanting: 2. 



Tarsal grooves on 1st joint ; piceous bronze, stria? of elytra very fine. 



71. seruginosus. 

 Tarsal grooves on 1st and 2nd joints; black, legs brown, eiytral stria' 



feebly punctured. 75. punctiformis. 



Bull. Br'klvn Ent. Soc. October, 1879. 



