THE LEAF BEETLES. 1231 



Throughout the State ; common. February S-December 22. Hi- 

 bernates beneath mullein leave.s and rubbish. Occurs on sweet po- 

 tatoes and -n-ild members of the Convolvulus family, often doing 

 much injury to the fcn-mer. The leaves only of young plants should 

 be dipped in a strong solution of arsenate of lead. 



C. thoracica 111., length 7 mm., is known from Illinois. 



*22S0 (7100). Cassida pau-idula. Boh., ilon. Cass., II, 1S5S, 457. 



( >bloua^-ovate, sides nearly parallel. Uniform dull green or greenish- 

 .velldw : antemiiv with last three joints pieecus. Thorax twice as wide as 

 long, the angles all bruadly rounded; margin very broad, flat and translu- 

 cent. Elytra with humeral angles prominent, margins broadly flattened, 

 rmnetures very coarse and close-set; intervals narrow. Length 5-5.5 mm. 



Vigo and Perry counties ; scarce. February 11-December 29. 

 Riley records it as attacking egg-plant, the horse-nettle and other 

 species of Solanacai* 



LXXIX. CoPTdCYCLA Chev. 1S34. (Gr., " cut -^ circle.") 



The membei"s of this genus are known from those of Cassida by 

 their longer antcunie and more (h-pressed form, with broader and 

 more flattened margins of thorax and elytra. 



KEY TO INDIANA SPECIES OF COPTOCTCIA. 



a. Elytra without black spots or dark markings. 



6. Elytra wholly golden yellow (dull reddish-yellow after death), not 

 alutaeeous. 22S1. bicoloe. 



&6. Elytra brownish-red, very finely granulate or alutaeeous. 



22S2. PUEPCBATA. 



aa. Elytra with black spots or marks, sometimes wholly black, except the 



margins. 



c. Disk of elytra with numerous tubercles or elevations, the margins 



pale at middle and apex. 22S3. clavata. 



re. Disk of elytra without distinct tubercles, the margins pale from near 



humeral angles to apex. 



d. Dark discal sriace of elytra broken by numerous yellow or pale 



spots. 2284. SIGNIFEBA. 



dd. Dark discal spare without spots, black, shining. 22S5. plicata. 



22S1 (7102). CoPTOCYCLA EICOLOB Fabr., Syst. Eleut., I, 1801, 369. 



Broadly oval, subdepressed. Above brilliant brassy or ^v,i^. 



greenish-golden in life; dull reddi^li-yellow after death; un- f^^j^ 

 dtr surface and last four joints of antemiaj black. Margins j-" 

 of thorax and el.rtra broadly expanded, very thin and trans- | 

 lucent. Elytra each with a small, rounded, depressed space 

 on disk, a large oblung one (often interrupted at middle) 

 near niargin. and with about ten rows of small, feebly im- Fig. 531. 



jiressetl punctures. Length .j.."-r, mm. (Fig. .".51. > 



•Amer. Xat. XVI, ISS2. 679. 

 [7S— 2344;i2] 



