ISCHNOPTEEA. 37 



This species is closely allied to I. brasiliensis, Sss., from S. Brazil and the Argentine 

 Republic, of which the male only is known. In this latter species the costal veins 

 of the wing are not brown, the complete rami of the vena ulnaris are 3 or 4, and the 

 incomplete rami also 3 or 4, and rather long. 



3. Ischnoptera mexicana, Sauss. 



Ischnoptera mexicana, Sauss. Mem. Mex., Blatt. p. 86. 27; Brunn. de W. Syst. Blatt. p. 141. 25 ; 

 Sauss. Miss. Scient. Mex., Orthopt. p. 64. 15, t. 2. fig. 36. 



Hab. Mexico, Eastern Cordillera, Orizaba, Moyoapan. 



4. Ischnoptera consobrina, Sauss. (Tab. ill. fig. 24.) 



Ischnoptera occidentalis, Sauss. Mem. Mex., Blatt. p. 87. 28 ( $ ) ; Brunn. de W. Syst. Blatt. 



p. 141. 23. 

 Ischnoptera consobrina, Sauss. Mem. Mex., Blatt. p. 88. 29; Brunn. de W. Syst. Blatt. p. 141. 24; 



Sauss. Miss. Scient. Mex., Orthopt. p. 59. 8, t. 2. fig. 34. 



§ . Fusea. Caput fuscum, prominulum, maculis ocellaribus flavis. Oculi in vertice invicem parum distantes ; 

 spatium inter illos aeque latum ac longum. Pronotum corneum, opacum, fusco-nigrum, modice ellipticum, 

 margine posteriore vix arcuato; disci impressionibus distinctis. Elytra longiuscula, castanea vel 

 rufescentia. Alae subvitreae, venis fuscis, campo marginali toto infuscato, in medio opaco ; area medio- 

 discoidali lata, areas medio-ulnari fere duplo latiore. Vena ulnaris ramis apicalibus 4-5, incompletis 5-6 

 brevissimis. Pedes testaeei vel leviter infuscati. Abdomen fuseo-testaeeum, apice fuscum vel subtus 

 totum fuscum. Lamina supra-analis in medio producta, apice rotundata. Cerci fuscescentes. 



Var. Pronotum utrinque et antice obscure rufo-marginatum. 



Long. 17 ; pronot. 4*5, lat. pronot. 5*75, long, elytr. 20-5, latit. elytr. 5-5 millim. 



Hab. Noeth Ameeica, Texas. — Mexico, Guerrero (H II. Smith), Jalisco and Vera 

 Cruz (Schumann), Orizaba, Cordova ( Mus. Genavense) ; Guatemala (Mus. Genavense) ; 

 Nicaeagua, Chontales (Janson). 



Seems to be very closely allied to I. rufa, Br. (from Brazil) ; but the wings have 

 brown nerves, and the lamina supra-analis seems to have a different shape, not being 

 exactly triangular. 



5. Ischnoptera conformis, sp. n. (Tab. III. fig. 25.) 



$ . I. consobrince formis simillima, fulvo-testacea ; elytris paulo brevioribus. Pronotum illo I. consobrinoe 

 conforme, totum corneum. Elytra fulva. Alse vitreae, venis fulvis, campo marginali fulvescente, in 

 medio haud opaco ; venulatione illae I. consobrince conformi. Pedes pallide testaeei. Abdomen apice 

 castaneum ; lamina supra-anali tota latitudine inter cercos rotundata. 



Long. 17 ; pronot. 4-5, latit. pronot. 5'75, long, elytr. 17, latit. elytr. 4-8 millim. 



Hab. Nicaeagua, Chontales (Janson). 



6. Ischnoptera ignobilis, Sauss. 



Ischnoptera ignobilis, Sauss. Miss. Scient. Mex., Orthopt. p. 60. 10 *. 



$ . Nigra vel castanea ; elytris castaneis vel rufescentibus ; pedibus frequenter pallidioribus, ferrugineis. 

 I. consobrince simillima at paulo major; differt lamina supra-anali late trapezina, late truncata, oculis 

 invicem potius magis remotis*. Alee venis rufo-testaceis vel brunneis, apice et campo anteriore brunneo — 



* I was certainly mistaken when I wrote that the eyes were less distant than in i". consobrina. On the con- 

 trary, they are separated by a space rather broader than long, and the area vitrea of the wing is also rather 

 broader than the area medio-ulnaris. (Sauss.) 



