1906.] NATURAL SCIENCES OF PHILADELPHIA. 45 



when compared with the typical series, but the differences are wholly 



of color. The dorsum of the pronotum is to a large extent velvety 



black, broken at the sulci, while the lateral carinse are marked as in 



specimens of type c, but darker, with the median longitudinal bar 



present. 



Scyllina picta (Bniner). 



1900. P[lectrotettix] pidus Bruner, Ace. Genera Spec. Locusts Argent., p. 



37, fig. 13. [Cordoba and Sante Fe Provinces, Carcarana and Rosario, 



Argentina.] 



A topotypic series of three males and three females from Carcarana, 

 collected by Bruner, have been examined. 



This species is only known from Cordoba and Sante F6 Provinces, 

 Argentina. 

 Scyllina brunneri (Giglio-Tos). 



Sapucay, Paraguay. February 13, 1905. 1 d^. (Foster, Hebard 

 Coll.) 



This specimen is considerably darker than any strongly marked 



specimen of this species seen. The whole insect is quite dark except 



for the light femoral bars, but the pattern is still distinctly visible, 



the medio-dorsal and lateral bars being present, and the 'tegminal 



streak clear apple. green. The size of this specimen is slightly greater 



than Matto Grosso specimens. 



Scyllina pratensis (Bruner). 



1904. [Plectrotettix] fn-atensis Bruner, Biol. Cent.-Amer., Orth., II, p. 100. 

 [Pernambuco, Brazil.] 



Paratypic specimens, a d^ and 9 . of this species, loaned by Prof. 

 Bruner, have been examined. They differ from brasiliensis in the 

 slightly smaller size, rather slenderer form, less divergent carinae of 

 the pronotum and the more acute fastigium. The color of the caudal 

 tibiae is of little diagnostic value, as in other species of the genus, the 

 male in hand having them wholly red, the female ochraceous with the 

 dorsal surface purplish distad and reddish proximad. 



Measurements of paratypcs. 



& 9 



Length of body, 20.2 mm. 26.5 mm. 



Length of pronotum, 4 " 5 " 



Length of tegmen, 18.5 " 23.5 " 



Length of caudal femur, 15 " 17.5 " 



Scyllina gregaria (Saussure). 



1861. St[enobothrus] gregarius Saussure, Revue et Magasin de Zoologie, 



2e ser., XIII, p. 318. [St. Thomas; Haiti.] 

 1903. Plectrotettix gregarius Rehn, Trans. Amer. Entoin. Soc, XXIX, p, 



