266 Mr. R Shelford's Stmlies of the Blattidae. 



6. Supra-anal lamina, {$) 

 sub-quadrate or trigonal, 

 apex emarginate, ( 9 ) 

 triangular, not or scarcely 

 exceeding the cerci. 

 7. Large species (exceeding 



25 mm.) 



7'. Smaller species. 



8. Supra-anal lamina ( ^ ) 

 with three nr more 

 spines on either side 

 before the apex. 

 9. Supra-anal lamina, 

 {$) scarcely em- 

 arginate at apex, 

 ( 9 ) shorter than 

 its breadth at 



base 



9'. Supra-anal lamina, 

 {$) deeply em- 

 arginate at apex, 

 ( 9 ) longer than 

 its breadth at base. 



8'. Supra-anal lamina 

 {$) not spined . . 

 6'. Supra-anal lamina, {^) 

 triangular,( 9 )trianguLar 

 and considerably exceed- 

 ing the cerci. 

 7. Lateral margins of 7th 

 abdominal tergite 

 serrate or denticulate. 

 8. These margins denti- 

 culate 



8'. These margins serrate. 

 9. Lateral margins of 

 6th abdominal ter- 

 gite serrate . . . 

 9'. Lateral margins of 

 6tli abdominal ter- 

 gite not serrate 

 7'. Lateral margins of 7th 

 abdominal tergite not 

 serrate. 



P. (jrandis, Sauss. 



P. raelanaria, Er. 



P. analis, Sauss, 



IP. pseudatrata, Tepp. 



P. (derrima, Er. 



P. ferox, sp. n. 



P. annata-, Tepp. 

 P. nifofusca, Tepp. 



