152 PROCEEDINGS OF THE ACADEMY OF [April, 



BLATTID^. 



PSEUDOMOPIN.^. 



ISCHNOPTERA Burmeister. 



Isohnoptera vilis Saussure. 



1869. I[schnoptera] vilis Saussure, Revue et Magasin de Zoologie, 2e ser., 

 XXI, p. 112. [Argentine Pampas.] 



9 6^. February, March and October, 1902; January to March, 1905. 

 In several of these specimens the reddish lateral margins of the 

 pronotum are less pronounced than in others. 



Isohnoptera brasiliensis Brunner. 



1865. /[schnoptera] brasiliensis Brunner, Nouv. Syst. Blatt., p. 130. 

 [Brazil.] 



2 d^. April and May, 1902. 



These individuals are somewhat smaller than the measurements 

 given by Brunner, but in other respects are typical of the species. 



NYCTIBORIN.E. 



NYCTIBORA Burmeister. 

 ♦Nyctibora vestita Saussure. 



1864. Paratr[opes] vestita Saussure, Revue et Magasin de Zoologie, 2e ser., 

 XVI, p. 308. [Brazil.] 



1 d", 1 9 . December, 1904; March, 1905. 



This species was originally synonymized with N. crassicornis Bur- 

 meister by Brunner, a proceeding which seems to the author not 

 exactly justified by the published descriptions at least. Biurmeister's 

 crassicornis appears, from the description given by Brunner, to be a 

 larger species without the very distinct single central blotch on the 

 pronotum; Saussure's vestita, on the other hand, has the median spot 

 distinct.^ The size of crassicornis given by Brunner shows that the 

 pronotum was larger by at least one millimeter in both directions than 

 in the available material. 



The specimens in hand have the median patch on the pronotum 

 solid, without sign of division, and somewhat resembling that of A^ 

 omissa Brancsik ^ from Catamarca, Ai-gentina, though more rounded 

 and not as transverse. The anal vein of the tegmen is also finely 

 lined with black, in addition to the discoidal vein and sutural margin. 



* M^m. Mex. Blatt., p. 64. 



' Jahresheft Naturwissen. Ver. Trencsiner Comitates, Trencsen, XXIV, p. 186, 

 tab. Ill, fig. 1, la and b. 



