276 BRAZILIAN ORTHOPTERA 



ciently large series of the ^'Orphula pagana'^ of authors to make a 

 proper disposition of that form. 



From Stal's description we should pick out as important essen- 

 tials the following: "Prothorax basi obtuse angulatus . . . 

 carinis lateralibus ante impressionem posticam parallelis, pone 

 eandem retrorsum distincte divergentibus. . . . Tegmina 

 apicem versus levissime angustata, apice truncata . . . 

 femorum posticorum apices attingentia (cf) vel vix attingentia 

 (9). Tibiis posticis apicem versus interdum infuscatis. . . ." 

 These features are those of important difference in the two species 

 and genera, as they belong to distinct genera. The Rio de 

 Janeiro specimens, now before us, fully agree with these characters, 

 while the ''Orphula pagana" of authors differs in the caudal 

 margin of the pronotal disk being subrotundate; in the lateral 

 carinae of the pronotum being as a whole very faintly divergent, 

 or broken mesad and then parallel cephalad and very faintly 

 divergent caudad; in the tegmina not being narrowed distad and 

 in both sexes the length of the same being so great they surpass 

 the extremities of the caudal femora, and in the caudal tibiae 

 never being as strongly infuscate as in true pagana. 



For this genus and species, so long misidentified by authors, it 

 is necessary we should find names. From our available material 

 we are able to determine that Walker's Chrysochraon filatus,^'' 

 described from Santarem, Brazil, is the same as "Orphula pagana^' 

 of authors. Giglio-Tos's minor, as we have already shown, ^* 

 is a geographic race of ^'pagaria," or as it should be known, 

 filatus. As a new generic name is required, in the absence of 

 any available one, we propose the name Paratruxalis, with 

 Chrysochraon filatus Walker as the type. The forms would stand 

 as follows : 



Paratruxalis Rehn 



Orphula Giglio-Tos and most authors, not of Stal 

 Paratruxalis filatus (Walker) 



Orphula pagana Giglio-Tos and most authors, not of 

 Stal 

 Paratruxalis filatus minor (Giglio-Tos) 

 Metaleptea minor Giglio-Tos 

 Orphula pagana minor Rehn 



" Catal. Dermapt. Salt. Brit. Mus., v, p. 785, (1870). 



3» Proc. Acad. Nat. Sci. Phila., 1906, p. 17, (1906); Ibid., 1913, p. 314, (1913). 



i 



