38 ORTHOPTERA. 



vel rufescenti-nebulosis, area medio-discoidali quam area medio-ulnaris paulo latior, quadrato-reticulata 



vel areolis latioribus. 

 Tar. a. Elytra ferruginescentia ; alae venis ferrugineis, margine anteriore ferrugineo ; b. Tota rufescens. 

 Long. 18'5 ; elytr. 22, pronot. 5, lat. pronot. 6-5 millim. 



Hab. Guatemala (Bodriguez).— Argentine Republic (Saussure). 



Closely resembling I. consobrina, but very distinct in the shape of its supra-anal 

 lamina. 



7. Isclmoptera nahua, Sauss. 



Ischnoptera nahua, Sauss. Revue et Mag. Zool. 1868, p. 356. 10 (<J ? ); Miss. Scient. Mex., Orthopt. 

 p. 56. 6, t. 2. fig. 33. 



Hab. Mexico, Eastern Cordillera, Orizaba; Guatemala, San Geronimo (Champion). 



8. Ischnoptera inca, sp. n. (Tab. IV. fig. 23.) 



$ . Sat minuta, castanea ; caput modice prominulum, maculis 2 ocellaribus flavis. Antennas eastaneae, dimidia 

 parte apicali fulvo-testacea. Pronotum ellipticum, postioe parum arcuatum, antice attenuatum, coriaceum, 

 sulcis disci profunde impressis, lobis lateralibus deflexis, subsulcatis, nee testaceis, nee trans] ucidis. 

 Elytra sat longa, castanea. Alae brunneo-infumatee, venis fnscis ; campo marginali in medio fusco-opaco. 

 Yena ulnaris ramis apicalibus 2, minutisque transversis 6 completis. Area medio-discoidalis quam area 

 medio-ulnaris fere duplo latior, quadrato-reticulata. Pedes pallide testacei. Abdomen castaneum, ultimo 

 segmento ventrali magno. Lamina supra-analis apice haud producta, obtusangula, vel rotundato- 

 producta. 



S . Lamina supra-analis grandis, apice latiuseule et longiuscule trigonali-producta, rotundata vel truncata. 

 Cerci basi fusci, debinc fulvi, apice fusco. 



Var. Ptufo-castanea ; alis parum nebulosis, campo marginali et venis ferrugineseentibus. Elytrorum area 

 costalis basi lutea. Abdomen superne testaceum. (Peru.) 



Long. 9 - 5 ; elytr. 10*2, pronot. 2-5, latit. pronot. 3 millim. 



Hab. Guatemala, Senahu in Vera Paz (Champion). — Peru (var.). 



Nearly allied to /. parvula, but differing in the colour of its antennae and in that of the 

 margin of the pronotum, which are testaceous in I. parvula. Also very closely allied 

 to I. castanea and I. nana, but differs in the form of the lamina supra-analis, $ . The 

 male is characterized by its lamina supra-analis and infra-genitalis being both much 

 produced in the middle. 



9. Ischnoptera castanea, Sauss. 



Ischnoptera castanea, Sauss. Rev. et Mag. Zool. 1869, p. 112. 14; Miss. Scient. Mex v Orthopt. 

 p. 61. 11(?). 



/. parvulm paulo major, alis longioribus. Tota castanea, pedibus rufo-testaceis, pronoto haud flavo-limbato, 

 plus minus bi-impresso. Elytra margine costali basi frequenter pallidiore. Alae leviter infuscatse, venis 

 fusco-rufis. Venulse costales longiuscule incrassatse. Vena discoidalis et media venulaeque transversa? 

 testaceae. Yena ulnaris ramos 3 ad apicem, ramulos minutos 3-4 ad venam dividentem emittens. 

 Lamina supra-analis trigonalis, apice leviter rotundata, integra. 



Long. 10 ; elytr. 10*5, pronot. 2*8, latit. pronot. 3*8 millim. 



Hab. Mexico. — Brazil. 



