1921] NATURAL SCIENCES OF PHILADELPHIA. 265 



Measurements (in millimeters). 



Length of Length of Width of Length of Width of 

 cf body pronotum pronotum tegmen*' tegmen 



Passa-Quatro, Minas Geraes, 19 4.1 4.8 19.4 5.4 



Brazil 

 Sapucay, Paraguay 

 Colonia Florencia, Chaco, 



Argentina 

 Icaiio, Santiago del Estero, 



Argentina 

 Icaiio, Santiago del Estero, 



Argentina 

 Icaiio, Santiago del Estero, 



Argentina 

 Icaiio, Santiago del Estero, 



Argentina 

 Icaiio, Santiago del Estero, 



Argentina 

 San Rafael, Mendoza, 



Argentina 



9 

 Icaiio, Santiago del Estero. 



Argentina 

 lea no, Santiago del Estero, 



Argentina 

 Icaiio, Santiago del Estero, 



Argentina 



As indicated above, the series of this species from the vicinity of 

 Icafio, shows an exceptional amount of individual size variation. 



Ischnoptera ignobilis Saussure 



1864. Isch[noptera] ignobilis Saussure, Rev. et Mag. de Zool., (2), XVI, p. 



313. [cT, nee 9 f^ Buenos Aires, Argentina.] 

 1869. I[schnoptera] vilis Saussure, Rev. et Mag. de Zool., (2), XXI, p. 112. 



[[d^], Argentina.] 

 1897. L[oboptera] bordlii Giglio-Tos, Boll. Mus. Zool. Anat. comp. Univ. 



Torino, XII, No. 302, p. 3. [ 9 ; Caiza and San Francisco, Bolivia; Tala. 



Argentina. ] 



Gran Chaco, Argentina, 7 cf , 1 9 . 

 Colonia Florencia, Chaco, Argentina, 4 cf , 1 juv. 

 Icano, Santiago del Estero, Argentina, 14 cf , 4 9 . 

 Tucuman, Tucuman, Argentina, 3 9,2 juv. 

 Las Garzas, Rio Las Garzas, Santa Fe, Agrentina, 3 cf . 

 Carcarana, Santa Fe, Argentina, 8 cf , 4 9 , 10 juv., 1 ootheca, 

 IHebard Cln.]. 



Buenos Aires, Buenos Aires, Argentina, February, 1 juv. 

 Cordoba, Cordoba, Argentina, (F. Schulz), 3 cf , 1 9 . 

 Montevideo, Uruguay, 3 juv. 



8^ The exposed length of the tegmen is given for females. 



'" It appears almost certain that a male, possibly with subgenital plate damaged 

 ■or missing, was described by Saussure ; which specimen he recorded as a female. 



