48 PROCEEDINGS OF THE ACADEMY OF [Feb., 



face and the shorter and heavier caudal femora, as well as the color 

 of the caudal tibise, serve to separate it without difficulty. In the case 

 of this species and S. conspersa the colors of the tibiae appear to be 

 constant, all the specimens of conspersa examined having the distal 

 section dark bluish, while the deep rich crimson of the distal two-thirds 

 of varipes is clear and uniform in the whole series. 

 Scyllina smith! Rehn. 

 Scyllina borellii Giglio-Tos. 

 Scyllina schistocercoides Rehn. 

 Scyllina viator ia (Saussure). 



Specimens recorded by the author as this species from Texolo, 

 La Joya, San Luis Potosi and Alta Mira, Tamaulipas, when re-examined 

 in the light of recent work on the Mexican and Central American 

 forms of the genus, prove to represent true viatoria. The males have 

 the dorsal face of the caudal femora distinctly barred, while the 

 females have these parts almost uniform green. 

 Scyllina calida (Bruner). 



1904. Plectrotettix calidus Bruner, Biol. Cent.-Amer., Orth., II, p. 101 

 [Cuernavaca, Morelos and Guerrero, Mexico, Nicaragua, Costa Rica.] 



Previous records of the author of viatoria from Cuernavaca, Uruapan, 

 Gualajara, Zapotlanejo and Zapotlan should be referred to this species. 



The range of variation in size and coloration in this form is very 

 great, some individuals having the colors weak and poorly defined, 

 while other individuals from the same locality are quite richly colored. 

 The width, number and intensity of the transverse bars of the tegmina 

 also varies greatly as in some individuals they are as broad as the inter- 

 vening sections, while in others they are broken, imperfect and rather 

 pardaline in character and distribution. 



Scyllina excelsa (Bruner). 



1904. Plectrotettix excelsus Bruner, Biol. Cent.-Amer., Orth., II, pp. 101-102. 

 [Tlalpam and Tacubaya, Mexico.] 



A male and two females of this species from Tacubaya show that this 

 is probably the most striking Mexican species. These individuals 

 have been previously recorded by the author as viatoria. The rather 

 short tegmina, more robust form and heavier caudal femora will 

 assist in separating this from the allied species. These specimens 

 show practically no green, the light shades being ochres. 



PSOLOESSA Scudder. 

 1875. Paoloessa Scudder, Proc. Boston Soc. Nat. Hist., XVII, p. 512 

 Included P. texana, jerrughiea and maculipemiis Scudder, of which 

 maculipennis can be considered the type. 



