1913.] NATURAL SCIENCES OF PHILADELPHIA. 377 



*Nemobius rufus Saussure. 



1877. Nemohius rufus Saussure, Mel. Orthopt., V, p. 256. [Brazil.] 



Misiones. December, 1910. One male, one female. 



The present specimens answer the original description very well, 

 except that the last article of the palpi bears no black and the wings 

 are fully developed and caudate. The latter fact shows the species 

 to be dimorphic in wing length. The general appearance of the 

 species is very similar to that of N. longipennis, but rufus can be 

 separated from the latter by having the ovipositor longer, the dorsal 

 margin of the apex of the same serrulate instead of serrate and the 

 disto-dorsal spurs of the caudal tibiae unequal in length instead of 

 equal. 



The species is only known from the type locality and the INIisiones. 



Gryllus argentinus Saussure. 



1874. Gryllus argentinus Saussure, Miss. Scient. Mex., Rech. Zool., VI, 

 p. 399. [Southern Brazil; Argentine Republic and the north of Patagonia; 

 Buenos Aires; Bahia Blanca; Rio Negro of Patagonia.] 



Misiones. December 30, 1910. (Nos. 2 and 3.) Two females. 



Mendoza, Prov. of Mendoza. Elev. 767 meters. December 20, 

 1907. One male. 



Chacras de Coria, Prov. of Mendoza. Elev. 936 meters. Janu- 

 ary 16, 1908. Two females. 



One Misiones female has the wings caudate, the others having 



them not exceeding the tegmina. A typical female from Buenos 



Aires, received from Saussure, has the wings no longer than the 



tegmina. 



SubfamUy (ECANTHIX.E. 

 (Ecanthus sp. 



Misiones. March 29 and December, 1910. Two males, one 

 female. 



These specimens are too imperfect to be determined with certainty. 



Neoxabea brevipes n. sp. 



Type: 9 ; Misiones, Argentina. November 6, 1910. (P. Jor- 

 gensen.) [Acad. Nat. Sci. Phila., type No. 5,229.] 



Closely related to N. hipunctata (De Geer), from which it differs in 

 ihe less projecting ventral margins of the lateral lobes of the prono- 

 tum, the shorter limbs, the shorter caudal tarsi and more uniform 

 coloration. One of the more apparent differences is that the inflated 

 proximal portion of the cephalic tibiae is less than half the entire 

 length of the same in hipunctata and a full half that length in brevipes, 

 the whole tibiae also being more robust in the new form. 



Size medium ; form as usual in the genus. Head with the occiput 



