334 OETHOPTEEA. 



elytra. In the males the anal field is very small, coriaceous, densely punctate-reticulate, 

 and the stridulating vein is very obsolete above on the left elytron. 

 This genus is known only from Mexico. 



Synopsis spederum. 



a. Elytrorum vena humeralis venae discoidali apposita, ab ilia tantum per sulcum separata. 

 Verticis rostrum scrobicula antennarum superans : 

 b. distincte superans. — 1. nasuta, Stal. 

 bb. leviter superans. 



c. Femina. — 2. schumanni, sp. n. 

 cc. Mares. 



d. Cerci apice trigonales, dilatati, compressi, — 3. hoegei, sp. n. 

 dd. Cerci longissimi, apice attenuati. — 4. maya, sp. n. 

 aa. Elytrorum vena humeralis obliqua, a vena discoidali divergens. Verticis rostrum scrobiculas 

 antennarum haud superans. — 5. simd, Brunn. 



1. Phrixa nasuta, Stal. 



Phrixa nasuta, Stal, Eecens. Orthopt. 2, p. 36 (1874) ; Brunner v. W. Monogr. der Phaneropt. 

 p. 263. 1, t. 6. fig. 80. 



Species per rostrum verticis elongatum a sequentibus distincta. 



<3 . Cerci a basi semicirculariter incurvi, apice compressi et laminatim dilatati, acuminati. 



Hab. Mexico, Cordova, Oaxaca. 

 Unknown to us. 



2. Phrixa schumanni, sp. n. 



2 • Verticis rostrum, obtusum, apice punctis minutis impressis 3. Lobi laterales pronoti angulo antico 

 subrotundato, margitie infero antice recto. Elytra subcoriacea, margine costali arcuato ; venis principalibus 

 2 prope apicem divergenfcibus ; apice angulato. Ovipositor subsquamosus, margine supero denticulato, 

 infero in dimidia parte apicali crenulato. 



$ . Long. eorp. 23 ; pronot. 6 ; elytr. 34 ; femor. post. 20 ; ovipos. 8 millim. 



Hab. Mexico, Atoyac in Vera Cruz (Schumann). 



3. Phrixa hoegei, sp. n. (Tab. XVI. fig. 1.) 



d 1 . P. maym haud dissimilis, elytris tamen valde brevioribus. Differt prsesertim cercorum forma ; hi arcuati, 

 teretes, apice trigonaliter compressi, ampliatione extus concava, angulo supero in acumen producto, infero 

 rotundato. 



S . Long. corp. 23 ; pronot. 6 ; elytr. 26-5 ; femor. post. 20'5 millim. 



Figuke. — Fig. 1, a cercus of the male. 



Hab. Mexico, Cordova (H'dge). 



Differs from P. nasuta in having the rostrum of the vertex not produced beyond the 

 foveolae of the antenna?. 



