280 • PROCEEDINGS OF THE ACADEMY OF [Apr., 



while the immature specimen is about three-fourths as long, with the 

 subgenital opercule relatively less developed. 



Family ACRIDID^. 

 Subfamily ACRYDIIN.^. 

 Prototettix lobulatus (St&l). 



La Cumbre, Prov. of Cordoba. (Lizer.) One female. 



This is the first exact Argentine record from south of the Misiones. 



Apotettix bruneri Hancock. 



Jujuy, Prov. of Jujuy. February, 1911. (Jorgensen.) One male. 

 Previously recorded by us from Embarcacion, Salta. 



Subfamily EUMASTACIN.^. 



*Masynte3 tigris Burr. 



Embarcacion, Prov. of Salta. April, 1911. (Jorgensen.) One 

 female. 



This specimen fully agrees with a male of the species from Corumbd, 

 Brazil. Bruner's M. brasiliensis^'^ appears to be very doubtfully 

 distinct, as the differential characters given are very slight, the 

 presumably different measurements being largely accounted for by 

 different general size, and in consequence they are hardly proportional. 

 The present specimen shows the following measurements: 



Length of body 26.5 mm. 



Length of pronotum 2.8 " 



Length of tegmen .". 5.3 " 



Length of caudal femur 14.5 " 



This is the first Argentine record for the species. 



Subfamily PROSCOPIN^. 

 Tetanorhynolius humilis Giglio-Tos. 



Misiones. September 7, 1910. (Jorgensen.) One male. 



This specimen has been compared with a paratypic male from 

 Caiza, Bolivian Chaco, and is identical except for its smaller size, 

 which is a secondary matter in this group. The only previous 

 Argentine record for the species was from San Lorenzo, Province of 

 Jujuy (Giglio-Tos). 



Tetanorhynolius borelli Giglio-Tos. 



Jujuy, Prov. of Jujuy. April and October, 1911. Two males, 

 two females. 



lOAnn. Carneg. Mus., VIII, p. 6 (1911). 



