Length of body : d 24 to 25 mm, ¥ 30 to 32 mm : prono- 

 tmii, d' 4.5 to 4.75 mm, ¥ 5.5 to 6 mm; tegmina, d and 9 

 22 mm: hind femora, c? 15 mm, ? 18 mm. 



Found on the open camp early in December among dry 

 and dead grasses. A very active insect and difficult to cap- 

 ture. When flying the males are exceedingly noisy. 



F. intermedia n. sp. 



A slender species with the sides of pronotum gently ex- 

 panding towards the posterior edge : head rather small, the 

 ai3ex of tegmina gently exjianded and rounded: antennae in 

 male flattened at base, in the female dagger- like. General 

 color of male brownish testaceous, of female green : median 

 carina testaceous to brown : base of hind wings deep rose 

 color ; anterior portion fenestrate but less broadly so than 

 in pKlchripennis. The transverse veins in this portion of the 

 wing less numerous than in the other species — about nine in 

 number. 



Length of body : <^ 20 mm; 9 28 mm; of tegmina, cf 16 

 mm, 9 20 mm; of hind femora, d 12 mm, 9 IH mm. 



The numerous specimens examined were collected on the 

 l^ampas in the vicinity of Carcarana, P. C. C. A. 



F. cdr/entina n. sp. 



A rather small but comparatively robust species in which 

 the lateral carinae of the pronotum are parallel. The wing 

 covers are but little broadened towards the apex. General 

 color yellowish testaceous; pronotum with the lateral 

 carinae yellow brodered within by rather broad black lines ; 

 the anterior edge of front wings green, the disk smoky 

 brown, more or less transparent in the center, the dorsal 

 portion with a faint tinge of greenish ; hind wings with the 

 basal posterior portion faintly cinnabar red. 



Length of body 21.5 mm; of tegmina 15 mm; hind femora 

 14.5 mm. A single male from Carcarana, P.O. C. A. 



GENUS SINIPTA, STAL. 

 S. B((hti<nii Stal. A very common locust in dry localities 

 -where the grasses are inclined to grow in bunches. One of 



