Mr. R. Shelfoi-d's Studies of the Blattidae. 313 

 4'. Tegmina with basal two- 

 fifths castaneous, re- 

 mainder testaceous . . . G.^w., Shelf. 

 2. rronotum testaceous or flavo- 

 testaceous witli lyrate cliiselled 

 markings on the disc. 

 3. Lyrale markings on disc 

 of prouotum obsolescent. 

 (Bright flavous species) . . Q. laticoda Walk 

 'i. Lyrate markings on disc of 

 pronotum not obsolescent. 

 4. Small species (not exceeding 

 22 mm.). 

 5. Eyes nearly toucliing on 



vertex of head . . . G. oblonga , Bov^^. 



5. %es not nearly toucliing 



on vertex of head. 



6. Frons strongly striate . G. nigrifrons, Bol. 



b. l^rons not strongly 



striate . / * „, • 



,, T G. pennrjuciji, sp. n. 



4 . Larger species. 



5. Antennae bifasciated witli 



ochreous. 



6. Mediastinal field of 



tegmina opaque test- 



r' irT""' , O. centurio, Bohrn. 



b. Mediastinal field con- 



colorous with rest of 



tegmina ..... (7. smlpttmita, sj). n 

 o. Antennae not bifasciated 

 with ochreous. 

 6 6 



6. Eyes touching or nearly 



touching on vertex of 

 liead. 



7. Tegmina with rufes- 



cent macula in 

 centre of disc. 

 8. Antennae rufo- 



fuscous or fuscous G. aetola, sp. n. 

 8'. Antennae piceous, 

 nitid. 

 9. Distance "apart of 

 eyes on vertex 



