OP PHILADELPHIA. 387 



cal margins pale yellow or whitish ; a pale yellowish, capillary, 

 oblique Hue from the humerus to the inaer margin : tergum black- 

 purple, lateral edge and tip yellow. 



Length to the tip of the hemelytra over three-tentha of an 

 inch. 



A common species. 



5. T. BIFIDA. — Crrcen, head and thorax banded, and hemely- 

 tra lineated with blackish. 



Inhabits Indiana. 



Vertex white with a central, transverse, dark green, abbrevia- 

 ted line ; prominent tip of the head with a dark green spot j 

 labrum yellowish, at tip dusky : thorax, anterior margin and 

 posterior submargin, with a transverse dark green transverse 

 line, anterior submargin and posterior margin with a white trans- 

 verse line : scutel on the edge and a central, transverse, abbrevi- 

 ated line dark green : hemelytra with six rather oblique dark 

 green lines, the exterior one bifid at tip : beneath blackish : feet 

 p&Ie. 



Length to the tip of the hemelytra about one-fifth of an inch . 



6. T. UIEROGLYPHICA. — Dull rufous ; head and scutel linea- 

 ted ; hemelytra spotted. 



Inhabits Arkansa. 



Body obscurely dull rufous : head with a black dot at tip, 

 above literate with black : thorax with a [314] dusky posterior 

 disk : scutel with black more or less curved lines : hemelytra 

 obsoletely spotted, nervurcs being pale : beneath pale yellowish : 

 pectus with large black spots : feet immaculate : t^rgum blue- 

 black, edge yellow. 



Length to tip of hemelytra one-fifth of an inch. 



Agreeably to the arrangement of Germar, the following of 

 my published species, may be placed in this genus, viz : 



Cercopis obfiqua, C. fnisilart's, and 0. comes; as well as the 

 following species of Fabricius, viz : Cicada undata, C. irrnrata, 

 and Cercopis costalis. 



The species which I published under the name of Cicada mix- 

 ta, has the same relation to this genus as the C. costalis of 

 Panzer. 

 1831.] 



