Genera and Species o/BIattidae. 1G7 



punctate ; eyes very close together ; antennae and labrum 

 castaneous, maxillary palpi rufo-testaceous ; ocelli not visible. 

 Pronoturn above with disk rugose, punctate and anteriorly 

 tubcrculate ; anteriorly obtusely carinate, anterior margin 

 reflected slightly, lateral bands anteriorly deflected down- 

 wards, but not so much as in Bantua ferox ; the channel 

 between the disk and the lateral bands wide and shallow ; 

 posteriorly the lateral bands are produced as in Filema 

 fZen^a^a, Hauss. & Zehnt. j posterior margin dentate. Meso- 

 and metanotum cribrate-punctate, with smooth interspaces 

 and a median carina, posterior angles slightly produced. 

 Abdomen not wider than thorax, obsoletely punctate above 

 and beneath ; an anterior zone on each tergite and sternite 

 impunctate; supra-anal lamina trapezoidal. Cerci and legs 

 castaneous. 



Total length 28 mm.; pronoturn 8'5 X 8'9 mm. 



Mombasa (1 $ ). 



Type in the British Museum. 



The species is in its pronotal structure intermediate between 

 Bantua ferox and typical Pilema. 



Genus Cyetotria, Stal. 



Stenopikma, Sauss. Ann. Mas. Civ. Genova, xxxv. p. 87 (1895) ; Sauss. 



& Zehnt. Rev. Suisse Zool. iii. p. 25 (1895). 

 Thysanoblatta, Kirby, Ann. & Mag. Nat. Hist. (7) xii. p. 380 (1903). 



The type of the genus is C. gibhicollis, Stal, and this species 

 is undoubtedly congeneric with the species included in Steno- 

 pilerna by de Saussurc and Zehntner. Thi/sanohhitta was 

 founded on a species characterized by an erect pubescence, 

 but otherwise differing in small details only from typical 

 species of Stenopilema ; and 1 have no hesitation in sinking 

 it as a synonym of Cyrtotria. There has been an excessive 

 multiplication of genera in this subfamily of Blattida?, and 

 much confusion has resulted therefrom. 



The species of Cyrtotria are very diflicult to identify from 

 descriptions, for it is not easy to ex])ress in writing the subtle 

 ditterences in the form of the pronoturn presented by the 

 different species. I have examined nearly all the typos, and 

 have drawn up a synoptical key to the species, which, 

 together with the figures, will I hope render the determination 

 of the si)ecies easier than heretofore. 



Two species of the genus, C. latipennis, Kirby, and C.palli- 

 cor?iiSj Kiiby, present a remarkable modification of the 

 pronoturn, wliich appears to have been overlooked by the 

 describer. The disk of the pronoturn on each side is perfo- 



