OO J. 15. SMITH. 



Black : mouth piceous, elytra, with numerous spots of cinereous pubes- 

 cence. 3 mm.; Illinois 40. guttulata. 



Blackish piceous ; head ferruginous ; antennae, anterior feet, middle 

 tibia and tarsi, base of hind tibia and tarsi, and margin of abdomen, 

 testaceous ; first joint of hind tarsi with a rudiment of a fourth ridge. 



3 mm.; Middle and Southern States 41. rilficeps. 



Ferruginous; sides of pectus and elytra darker; hind tibia with a 

 rudiment of a third, first tarsal joint with a rudiment of a fourth 



ridge. 3 mm.; California 42. mibila. 



First joint of hind tarsi with four, second with two oblique ridges. 



Ridges not strongly marked ; legs unusually long and slender, piceo- 

 testaceous ; densely clothed with fine silvery pubescence. 6 mm.; 



Illinois, Florida..... 43. spleiltlens. 



First joint of hind tarsi with four, second with two oblique ridges. 



Ridges more strongly marked than usual; narrow, linear ; entirely black. 

 Florida 44. Floridensis. 



III. — Hind tibia xoith three short oblique parallel ridges. 



First joint of hind tarsi with three, second with two oblique ridges. 



Black, linear ; elytra with numerous rounded spots of ashy sericeous pubes- 

 cence. 2 — 3 mm.; United States 45. pustulata. 



Black, linear, elytra with lines of brownish-gray pubescence confluent behind. 

 3 mm.; Kentucky 40. coin icta. 



Nearly linear, ferruginous; elytra black with the suture and margin narrowly 

 ferruginous; base ferruginous, broader at the humeri. 4 — 5 mm.; 

 Middle States 47. fusci pennis. 



Subcuneate; beneath ferruginous; abdomen and sides of breast dusky; above 

 black ; mouth, anterior narrow interrupted band of thorax, large 

 triangular basal spot of each elytra, suture and margin behind the 

 middle, yellow. 3.5 — 4 mm.; Lake Superior 48. pectoralis. 



Nearly linear, entirely black; pubescence brownish-gray. 3 — 4 mm.; Lake 

 Superior, Minnesota, New York.. v 49. morula. 



Nearly linear; fusco-ferruginous; pubescence brown sericeous;- ridges of hind 

 tibia longer and more oblique than usual. 3—4 mm. ; Middle and 



Southern States 50. aiiibusta. 



First joint of hind tarsi with three, second with two, and third with two oblique 

 ridges. 



All the ridges strongly marked; ferruginous, elytra black; pubescence fine 



and dark. 5 mm.; Georgia 51. siligularis. 



First joint of hind tarsi with four, second with two oblique ridges. 



Slightly cuneate piceous ; covered with brown sericeous pubescence. 3 — 4 mm. ; 

 United States 52. imicolor. 



Subcuneate ; black, pubescence brown, head and anterior half of thorax 

 ferruginous ; the former sometimes with a black spot. 3 — 4 mm. ; 

 Middle and Western States 53. margi iiali*. 



Ferruginous; elytra black, with a small, indistinct humeral spot ferruginous; 

 abdomen blackish, anterior margin of ventral segments rufous; legs 



pale. 3 mm.; New York 54. Schauppii. 



First joint of hind tarsi with four, second with three oblique ridges. 



Narrow, linear ; entirely black. 5 mm.; North. Illinois 55. a?qualis. 



