51 



Specimens of this insect have been seen from Cordoba (F. 

 Schulz) and others collected at Carcarana where it is, per- 

 haps, the most numerous of the three species described 

 above and found at this locality. 



,Sp((fh(i/iiiJii festdceioii n. sp. 



A fourth species of this genus was found at Toaj^, Pampa 

 Central. This insect is very similar in general form to 

 those described above, but differs from them in having the 

 spines or projections on the pronotum much longer and leaf - 

 like than in the preceding forms. It is also considerably 

 larger, and has the body uniformly yellowish brown with 

 comparatively few marks of darker color on sides and disk 

 of jDronotum, and on the middle of outer face of hind femora 

 and the disk of tegmina. 



Frontal costa gently sulcate, the sides parallel to a point 

 a little below ocellus, then rather broadly but roundly diver- 

 gent, then continuous to clypeus in a somewhat similar form 

 to that of ^ifihuifKiii. The hind femora with a toothed leaf- 

 like exjDansion on lower outer carina about midway between 

 base and apex. The head much broader in proporation to 

 size of insect than in any of the preceding species. 



Length (female): of body 45 mm, of pronotum 18 mm, of 

 tegmina 20 mm, of hind femora 15 mm. 



GENUS GRAEA, PHILIPPI. 



TABLE FOR SEPARATING THE SPECIES. 



A. More graceful, comparatively smooth, varied with light and darker 

 shades of testaceous and brown. horrida Philippi. 



AA. More robust: much more rugose — unicolorous. 



luoustrosa Bruuer. 



G. Jtorrida Philippi. This insect has been recorded from 

 various localities between Bahia Blanca and Catamarca, but 

 some of the records undoubtedly refer to the next species. 

 Specimens of G. horrkki have been examined from Mendoza, 

 San Louis and Cordoba, (P. Schulz, H. Stempelmann). 



