NATURAL SCIENCES OF PHILADELPHIA. 307 



D. 



(Tarsi without grooves ; body oval :) 



Hind angles rectangular, scutellar stria long : 



Basal fovese and side margin of protliorax not punctured ; body wider. 



41. fallax Dej. 

 Basal fovese and side margins punctured ; body less wide ; striatus Dej. 



42. scul])U(,s Lee. 

 Hind angles rounded, scutellar stria wanting : 



Side margin much wider, impunctured. 43. obesulus n. sp. 



E. 



(Two joints of posterior tarsi finely grooved on outer side, body oval :) 

 Basal fovese and side margin of prothorax feebly punctured. 



44. 2)er7nundus Say. 



F. 

 (Antennse with joints 1-3 strongly carinate ; two or three joints of poste- 

 rior tarsi grooved on the outer side ; basal fovese of prothorax double.) 



a. Sides of prothorax not depressed : 



* Prothorax distinctly narrowed behind, sides feebly sinuate : 

 Body impunctured beneath ; outer basal fovea punctiform, feeble ; 

 Larger, elytral strise punctured, dorsal punctures 3. 45. suhcordatus Lee. 

 Smaller, elytral strise not punctured, dorsal punctures 2. 



46, scitulus Lee. 

 Meso- and metathorax punctured beneath : 



Outer basal fovese larger, prothorax less narrowed behind, but more sinuate 

 on the sides, dorsal punctures 2 ; occidentalis X Chaud. 



47. ketulus Lee. 

 ** Prothorax very slightly narrowed behind, feebly or not at all sinuate 



on the sides : basal fovese confluent, punctured : 

 Color dark metallic ; hind angles of prothorax nearly rectangular, dorsal 



punctures 2-4 ; cursitor Jjec. 48. occidentalis De^. 



Color black, hind angles nearly rectangular, dorsal punctures 2-4. Long. 

 12 mill. ; Dacota. 49. corvus n. sp. 



*** Prothorax feebly narrowed behind, basal fovese'not confluent, outer 

 one small but deep, dorsal punctures 2; body beneath impunctured; 

 Prothorax as much narrowed before as behind ; basal fovese not punctured. 



50. cyaneus Lee. 

 Prothorax more narrowed in front; 



Antennse piceous at base. 51. texanus Lee. 



Antennse ferruginous at base; chulcites \\ Say. S2. Sayi Brulle. 



b. Prothorax not narrowed behind, sides depressed, more widely towards 



the base : trunk punctured beneath; 

 Not polished, dorsal punctures 4 : 

 Outer basal fovea distinct, color green or blue, or dull bronze, legs piceous 

 or ferruginous. 53. lucuhlundus Say. 



