1921] NATURAL SCIENCES OF PHILADELPHIA. 303 



Fig. 11. Tschiioptera icano new species, cf, type. Border of Rio Salado, 



near Icano, Santiago del Estero, Argentina. Dorsal view of pronotum. 



(X7). 

 Fig. 12. Ischnoptera icano new species, d', type. Border of Rio Salado, 



near Icano, Santiago del Estero, Argentina. Dorsal view of supra-anal 



plate. (Much enlarged). 

 Fig. 13. Ischnoptera icano new species, cf , type. Border of Rio Salado, 



near Icano, Santiago del Estero, Argentina. Ventral view of subgenital 



plate. (IVIuch enlarged). 

 Fig. 14. Pseudischnoptera lineata (Olivier), d^. St. Jean du Maroni, 



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

 Fig. 15. Pseudischnoptera rhabdota new species, cf , type. Border of Rio 



Salado, near Icano, Satiago del Estero, Argentina. Dorsal view. (X3) 

 Fig. 16. Pseudischnoptera rhabdota new species, c?, type. Border of Rio 



Salado, near Icano, Santiago del Estero, Argentina. Ventral view of 



subgenital plate. (Much enlarged). 

 Fig. 17. Pseudischnoptera rhabdota new species. 9 , paratype. Border of 



Rio Salado, near Icano, Santiago del Estero, Argentina. Dorsal outline. 



(X3). 



Plate XII. — Fig. 1. Epilampra berlandi new species, d', type. Icano, San- 

 tiago del Estero, x\rgentina. Dorsal view. (X4). 

 Fig. 2. Epilampra berlandi new species., cf, type. Icano, Santiago del 



Estero, Argentina. Cephalic view of head. (X9). 

 Fig. 3. Hedaia yersiniana (Saussure). cf. Curityba, Parana, Brazil. 



Dorsal viewi^". (X1J4). 

 Fig. 4. Hedaia yersiniana (Saussure). c^ . Curityba, Parana, Brazil. 



Dorsal outline of pronotum. (X1J4)- 

 Fig. 5. Hyporhicnoii rnironensis new species. La Forestiere, French 



Guiana. Dorsal view. (X2). 

 Fig. 6. Schizopilia fissicollis (Serville). cf. St. Laurent du Maroni, 



French Guiana. Dorsal outline of pronotum. (XlH). 

 Fig. 7. Triboniiun conspersum (Guerin and Percheron). Immature 6 . 



Tijuca, Rio de Janeiro, Brazil. Dorsal view. {2}/^). 

 Fig. 8. Tribonidium signaticollis (Burmeister). cf. Curityba, Parana, 



Brazil. Dorsal view. (X3). 

 Fig. 9. Tribonidiuni ampluni new species. (J'ftype. Tijuca, Rio de Janeiro, 



Brazil. Dorsal view. (X3). 

 Fig. 10. Tribonidiuni ampluni new species. 9 , allotype. Tijuca, Rio de 



Janeiro, Brazil. Dor.sal outline. (X3). 

 Fig. 11. Zetobora emarginata Burmeister. cf. La Forestiere, French 



Guiana. Dorsal outline of pronotum. (X3). 

 Fig. 12. Zetobora emarginata Burmeister. 9 . La Forestiere, French 



Guiana, Dorsal outline of pronotum. (X3). 



Plate XIII. — Fig. 1. Zetoborella gemmicula new species, cf , type. St. Jean du 

 Maroni, French Guiana. Dorsal view. (X3). 



Fig. 2. Zetoborella gemmicula new species. 9 , allotype. St. Jean du 

 Maroni, French Guiana. Dorsal view of pronotum. ( X3). 



Fig. 3. P/io?-/iO('ca Aw'mba/o Burmeister. cf. La Forestiere, French Guiana. 

 Dorsal view. (X23.^). 



Fig. 4. P etasodes mouffeti (Kirhy). Immature 9. Tijuca, Rio de Janeiro, 

 Brazil. Dorsal view. (XlH). 



Fig. 5. Ceuthobia lepta new species, cf , type. Cordoba, Cordoba, Argen- 

 tina. Dorsal view. (X6). 



Fig. 6. Ceuthobia lepta new species, cf , type. Cordoba, Cordoba, Argen- 

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



^'^ Due to the decided declivity cephalad of the pronotum, this dorsal view of 

 the entire insect actually gives a dorsal-caudal view of the pronotum. We have 

 herefore given a directly dorsal outline of the pronotum itself in figure 4. 



