INSECTA ORTHOPTERA. 



Obdeb-ORTHOPTERA. 



Wings four ; the two anterior coriaceous, pergameneous, or sub- 

 membranous ; the two posterior membranous, folded longitudinally. 

 Mouth masticatory ; mandible toothed ; labium completely cleft. 

 Larva and pupa more or less resembling the imago, but without wings. 

 Anal segment without a forceps. 

 Hind legs formed for walking. 

 Head retracted. Cursoria. 

 Head exserted. Gressoria. 

 Hind legs formed for leaping. Saltatoria. 

 Anal segment with a movable forceps. Euplexoptera. 



Section— CURSORIA. 



Body ovate, depressed. Head retracted into the pro thorax. Legs 

 slender. 



Family — BLATTiDiE. 

 Antennae setaceous ; tibiae spiny ; tarsi five-jointed ; wing-covers 

 overlapping medially; abdomen with nine or ten dorsal, and six 

 (female) or eight (male) ventral, rings. 



Genus-BLATTA. 



Linnceus. 

 Fore wings fully developed, coriaceous, smooth, with distinct veins; 

 the anal area with five or six axillary veins ; infra-median vein of the 

 fore wings flexuous, not angular; that of the hind wings emitting no 

 branches towards the dividing vein. Femora armed with spines. 

 Supra-anal lamina triangular, entire or slightly notched. Subgenital 

 lamina of the male without, or almost without, styles ; apical ventral 

 segment of the female ample, flat, with no subgenital lamina. 



B. coNJUNCTA. Walker, Cat. Blattaria Brit. Mus., p. 109 (1868). 



Male. Testaceous, fusiform, smooth, shining, flat. Head extend- 

 ing rather beyond the prothorax. Eyes piceous, rather far apart. 



