302 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



Minas Geraes, Brazil. Ventral view of subgenital plate. (Much enlarged). 

 Fig. 4. Neoblaliella eudromielloides new .species, cf , type. Passa-Qiiatro, 



Minas Geraes, Brazil. Caudal view of subgenital plate. (Greatly enlarged) . 

 Fig. 5. NeoblatteUa berlandi new species, cf , type. Upper Amazon Basin, 



between Peru and Bolivia. Dorsal view. (X4). 

 Fig. 6. NeoblatteUa berlandi new species. d^,type. Upper Amazon Basin, 



between Peru and Bolivia. Ventral view of subgenital plate. (Same scale 



as figure 3). 

 Fig. 7. NeoblatteUa berlandi new species. c^,type. Upper Amazon Basin, 



between Peru and Bolivia. Caudal view of subgenital plate. (Same scale 



as figure 3). 

 Fig. 8. NeoblatteUa tapenagae new species. 9 , type. Colonia Florencia, 



Chaco, Argentina. Dorsal view. (X3). 

 Fig. 9. Liosilpha pmnicata (Stal). 9. Tijuca, Rio de Janeiro, Brazil. 



Cephalic outline of cephalic femur. (Much enlarged). 

 Fig. 10. Liosilpha pumicata (Stal). 9 . Tijuca, Rio de Janeiro, Brazil. 



Distal outline of tarsal claws and arolium. (Greatly enlarged). 

 Fig. 11. Leuropeltis atopa new species, cf, type. Gourdonville, French 



Guiana. Dorsal view. (X3). 

 Fig. 12. Leuropeliis atopa new species, cf, type. Gourdonville, French 



Guiana. Cephalic outline of cephalic femur. (Much enlarged). 

 Fig. 13. Leuropeliis atopa new species, cf , type. Gourdonville, French 



Guiana. Ventral view of subgenital plate. (Much enlarged). 

 Fig. 14. Litoblalla hrasiliensis (Brunner). cf. Cordoba, Cordoba, 



Argentina. Dorsal view (X3). 

 Fig. 15. Litoblatta brasiliensis (Brunner). cf • Cordoba, Cordoba, Argen- 

 tina. Ventral view of subgenital j)late. (Much enlarged). 

 Fig. 16. Litoblatta brasiliensis (Brunner). 9 • San Rafael, Mendoza, 



Argentina. Dorsal outline. (X3). 

 Fig. 17. Litoblatta brasiliensis (Brunner). 9 ■ San Rafael, Mendoza, 



Argentina. Dorsal-caudal view of distal portion of abdomen, showing the 



manner in which the sixth tergite (A) is produced over the supra-anal 



plate (B).i-'9 



Plate XI. — Fig. 1. Ischnoptera carcarana new species, cf, type. Carearana, 



Santa Fe, Argentina. Dorsal outline. (X4). 

 Fig. 2. Ischnoptera carcarana new species, cf, paratype. Carcaraiia, 



Santa Fe, Argentina. Dorsal outline of head, pronotum and tegmina, 



showing the brachypterous form. (X4). 

 Fig. 3. I schnoptera carcarana new species, cf , type. Carcarana, Santa Fe, 



Argentina. Ventral view of subgenital plate. (Much enlarged). 

 Fig. 4. Ischnoptera argentina new species. cT, type. San Nicolas, Buenos 



Aires, Argentina. Ventral view of supra-anal plate, showing appendages 



at bases of cerci. (Much enlarged). 

 Fig. 5. Ischnoptera argetdina new species, cf, paratype. San Nicolas, 



Buenos Aires, Argentina. Ventral view of subgenital plate. (Much en- 

 larged). 

 Fig. 6. Ischnoptera argentina new species. 9 , allotype. San Nicolas, 



Buenos Aires, Argentina. Dorsal view of supra-anal plate. (Much enlarged) 

 Fig. 7. I schnoptera litostylata new species. d',type. Las Garzas, Santa Fe, 



Argentina. Dorsal view of supra-anal plate. (Much enlarged). 

 Fig. 8. Ischnoptera litostylata new species. d',type. Las Garzas, Santa Fe, 



Argentina. Ventral view of subgenital plate. (Much enlarged). 

 Fig. 9. Ischnoptera saussurei new species. c^,type. Carcarana, Santa Fe, 



Argentina. Dorsal view of supra-anal plate. (Much enlarged). 

 Fig. 10. Ischnoptera saussurei new species, d'jtype. Carcaraiia, Santa Fe, 



Argentina. Ventral view of subgenital plate. (Much enlarged). 



^^^ In direct dorsal aspect, a very narrow caudal marginal portion ol the sub- 

 genital plate is alone visible. 



