1910.] NATURAL SCIENCES OF PHILADELPHIA. 413 



E. — Tegmina covering all or greater portion of abdomen. 

 Color pattern moderately contrasted, discal area 



on pronotnm usually somewhat paler mesa 



pensylvanica (De Geer). 

 EE. — Tegmina rarely exceeding second abdominal seg- 

 ment. Color pattern strongly contrasted, discal 



area on pronotum uniform 



'pensylvanica incequalis (Sauss. and Zehntner). 

 DD. — Supra-anal plate subrectangulate produced with apex 

 rounded. (Pronotum with discal area poorly con- 

 trasted and poorly defined) 



divisa Sauss. and Zehntner. 

 CC. — Pronotum without a decided central discal dark brownish 

 area. 3 

 D. — Size larger (tegmina 5.5 to 7.5 mm. in length). Teg- 

 mina ovate, distal margin rounded... couloniana Sauss. 

 DD. — Size medium or small (tegmina 1.5 to 4.8 4 ). Tegmina 

 obliquely truncate distad (uhleriana and u. fulvescens) , 

 rounded distad (notha and borralis) or lobiform 

 (bolliana and deserke). 

 E. — Tegmina attingent, not lobiform and lateral. 



F. — Tegmina subquadrate, distal margin more or 

 less obliquely subtruncate. 

 G. — Size medium. Supra-anal plate subsinuate 



laterad uhleriana Sauss. 



uhleriana fulvescens Sauss. and Zehntner. 

 GG. — Size small. Supra-anal plate regularly tri- 

 gonal borealis Brunner. 



F. — Tegmina little shorter than abdomen, ovate 



notha n. sp. 

 EE. — Tegmina lobiform, lateral. 



F. — Tegmina reaching only to base of metanotum 

 and separated by considerably more than 

 their width. Supra-anal plate broadly obtuse- 



angulate, color pitch black 



bolliana Sauss. and Zehntner. 



FF. — Tegmina reaching to base of proximal abdominal 



segment and separated by no more than their 



own width. Supra-anal plate rectangulate. 



Color ochraceous desertce (Rehn and Hebard). 



.1.1. — Tegmina longer than body. (Coloration uniform.) 



B. — Length of tegmina 11 mm. General color ochraceous 



insolita n. sp. 



BB. — Length of tegmina 16.2 to 20 mm. General color brownish 



black or ferruginous occidentalis Sauss. 



1 Rarely such a niaculation is present in very dark individuals of /. couloniana, 

 but in these cases the form of the supra-anal plate and of the tegmina is diag- 

 nostic. 



* In /. notha 9.5 mm. is the length of tegmen. 



