276 PROCEEDINGS OF THE ACADEMY OF [May^ 



While fully agreeing in every other way with the description of the 

 species, which was based on a single female, the males are found to 

 lack the pale annulus on the antennae, which is marked in the single 

 female. 



The measurements of the specimens are as follows: 



Length of body 8.6 mm. 8.5 mm. 9. mm. 



Length of pronotum 3. " 3. " 3.2 " 



Greatest width of pronotum 3.2 " 3.3 " 3.6 " 



Length of tegmen 8. " 8.2 " 8. 



This species is now known from southern Brazil (Rio Grande do 

 Sul), Uruguay (Montevideo; Shelf ord), eastern Paraguay (Puerto 

 Bertoni),^ and northern Argentina. 



Ischnoptera rufa Brunner. 



1865. I[schnoptera] rufa Brunner, Nouv. Syst. Blatt., p. 131, PI. Ill, figs. 

 13a-c. [Brazil; Porto Rico.] 



Misiones. December 2, 1910. (No. 5.) Two males. 

 We have no previous Argentine records of this species aside from 

 that from San Lorenzo, Jujuy (Giglio-Tos), 



Ischnoptera marginata Brunner. 



1865. I[schnoptera] marginata Brunner, ibid., p. 132. [Brazil.] 



Misiones. December 20, 1910. (No. 8.) One female. 



This specimen is perfectly typical of the species. The nearest 

 definite localities from which the species has been recorded are 

 Sapucay and Villa Rica, Paraguay, and Salta, Argentina. 



Ischnoptera brasiliensis Brunner. 



1865. I[schnoptera] brasiliensis Brunner, ibid., p. 131, pi. Ill, figs. 12a-c. 

 [Brazil.] 



Misiones. December, 1910. Two males. 



Pedregal, Mendoza. December 14, 1906. One male. 



The Pedregal specimen shows no differences from the Misiones 

 individuals. The species has also been recorded from San Lorenzo,^ 

 Jujuy, Oran, Salta and San Pablo, Tucuman (Giglio-Tos), Rio Negro, 

 Sierra de Corrumalan, Carmen de Patagones (Berg), and Bahia 

 Blanca (Saussure), Argentina; Sapucay, Paraguay (Caudell and 

 Rehn), and Uruguay (Berg). 



1 The acquisition of the present material enables us to identify the broken 

 specimen of this genus from Puerto Bertoni recorded by us as Pseudomops sp. 

 {Ent. News, XXII, p. 247) as this species. 



