90 GEO. H. HORN, M. D. 



Elytra Irregularly, not closely punctate, the surface without striae or sulci ; tibiae 

 with a distinct carina extending the entire length of the outer edge. 



Series A. 

 Elytra vaguely subsulcate, the punctures irregular and separated by smooth 

 lines; tibiae carinate (except in vincta), but less distinctly than in Series A. 



Series B. 

 Elytra regularly sulcate-striate, the intervals very regularly elevated, the punc- 

 tures arranged quite regularly in a double series in the sulci ; tibise not at 

 all carinate Series C. 



Series A. 

 The species belongiug to this series may be separated iu the fol- 

 lowing manner : 



Antennae with third joint fully as long as the fourth and twice as long as second. 



Elytra with a broad brown band at base, enclosing on each side an oval pale 



spot, emarginate at the side margin ; four small round spots in an arcuate 



series at the posterior third coiiuexa. 



Elytra with three transverse black bands and a small apical spot, the second 



and third bands divided by the suture triciucta. 



Antennffi with joints two and three small, together rarely longer than the fourth, 

 usually shorter. 

 Elytra ornate, nearly as iu connexu, but with the four posterior spots forming 

 a crescent; joints nine and ten of antennae conspicuously pale. 



picticornis. 

 Elytra with three arcuately transverse series of black spots of four in each. 



Entire underside of body and legs black soror. 



Abdomen and base of femora pale IS-ptiiictata. 



Elytra yellowish white, with three entire transverse bands of pale bluish 

 green balteata. 



Series B. 

 The species of this series may be separated in the following manner : 



Antennae with joints two and three small, nearly equal, together much shorter 



than the fourth 2. 



Antennae with joint third longer than second, and nearly or quite as long as the 



fourth 3. 



2. — Head and legs pale loiigicoi'uis. 



Head and legs in part piceous. 



Abdomen and femora pale; elytra pale green, with short piceous vittae at 



suture and from the umbone virgifera. 



Abdomen and femora pale; elytra black, with the entire margin and apical 



space yellow; antennae very long filicoruis. 



Abdomen and femora entirely black. 



Elytra entirely black atripenuis. 



Elytra black, with the side margin and median vitta yellow. 



leiniiiscata. 

 3. — Elytra pale, merely a slight fuscous area near the scutellum and humerus; 



legs pale blandula. 



Elytra black, with a narrow side margin and a narrow vitta nearer the su- 

 ture pale; legs black, except the base of femora viucta. 



