Bruner: South American Crickets. 363 



d. Pionotal disc marked with a rufous patcb, or with a couple of an- 

 teriorly directed yellow lines. 

 e. Pronotum not yellow-bordered in front; disc with ferruginous 

 patch. 

 /. Slightly smaller, color black. [Mexican plateau]. 



mexicana Saussare. 



ff. Slightly larger, more or less varied with rufous; black, hind 



femora with the apex rufous, or of that color throughout. 



[Vera Cruz, Guatemala, and other portions of the low 



countrj- in Mexico and Central America] . .fralerna Saussure. 



ee. Pronotum entirely yellow-margined. 



f. Disc of the pronotum with an elongate ferruginous maculation. 

 Size smaller, 6.2 mm. with wings. [Southern Mexico, Costa 



Rica.] tricolor Saussure. 



ff. Disc of the pronotum furnished with two narrow strongly 

 divergent yellow lines. Size larger, 7.5 mm. with the wings. 



[Chapada, Brazil] niarginipennis sp. nov. 



dd. Pronotal disc immaculate, completely yellow-bordered. Color 

 chiefly black. Size small, 6.5 mm. with the wings. [Costa Rica.] 



biolleyi Saussure. 



cc. The transverse facial line of the male roughly tumid, without the black 



impressions. Black, the pronotum completely yeilow-bordered, 



provided with oblique discal margins. Length including the wings 



7 mm. [Guererro, Mexico] scrofulosa Saussure. 



bh. Smallest, color dirty smoky-brown. Face between the antennae of both 

 sexes flat. Eyes close together, separated by a space scarcely more 

 than one-fourth the width of one of them. Posterior metatarsus very 

 short. Size to tip of the wings 4.1 mm. [Lower Mexico; Peru]. 



pulicaria Saussure. 

 15. Rhipipteryx forceps Saussure. 



Rhipipteryx forceps Saussure, Biol. Cent.-Amer., Orth., I (1896), p. 201, PI. 11, 



fig. 23; KiRBY, Syn. Cat. Orth., II (1906), p. 11. 

 Rhipipteryx atra Saussure (non Serville), Miss. Mex., Orth. (1874), p. 361. 



Tlie collections now being reported upon contain two specimens, 

 which seem to belong here, rather than to either R. atra Serville or R. 

 carbonaria Saussure, both of which are also reported as occurring in 

 Colombia. As indicated in the foregoing synopsis of species, the 

 pallid joints of the antennae do not agree with the descriptive matter, 

 where the insects are more fully described. 



Habitat. — Bogota, Colombia. Carnegie Museum, Ace. No. 2306. 



16. Rhipipteryx sp.? 

 There are two immature specimens of a second entirely black 

 Rhipipteryx at hand coming from the Upper IVIamore river, Dept. of 



/ 



