36 ORTHOPTEKA. 



b. Testacea ; pronoti discus fuscus, circumcirca testaceo-marginatus, per vittam flavidam 

 divisus. — 16. divisa, sp. n. 

 bb. Ruf o-testacea ; pronotum corneum, disco fasciis 2 arcuatisfuscis. — [17. bolliana, sp. n.] 

 11 . Femora anteriora margine infero-interno tota longitudine spinoso, spinis partis distalis minoribus, 

 confertis, distinctissimis. (Species mundi antiqui.) — (Ischnoptera.) — 18. blattoides, Sss. 



(Cf. /. ectobioides, Sss. ; I. bocaffei, Bol. ; /. vitticollis, Br., &c.) 



« 



Conspectus specierum secundum alam ordinatarum. 



a. Alarum area medio-discoidalis area? medio-ulnari sequilata. — 1. incequalis ; [2. uhleriana] ; 

 6. ignobilis ; 7. nahua ■ (8. inca) ; 13. parvula ; 16. divisa ; 18. blattoides. 

 aa. Alarum area medio-discoidalis quam area medio-ulnaris evidenter latior. — 3. mexicana; 

 4. consobrina ; 5. conformis ; 8. inca; 9. castanea; 10. azteca; 11. tolteca ; 12. nana; 

 14. annulicornis ; 15. couloniana ; [17. bolliana']. 



1. Ischnoptera insequalis, sp. n. (Tab. VI. figg. 14-17.) 



d . Eusca vel fusco-ferruginea, antennis brunneis. Caput facie testacea, in medio et vertice nigris. Pronotum 

 ellipticum, impressionibus distinctis, disco convexiusculo, laevigato, toto nigro vel fusco vel eastaneo, 

 marginibus lateralibus testaceis, translucidis, fere sulfureis. Elytra fusca vel rufescentia, area basali 

 marginis antici hyalina. Alas subvitrese, margine anteriore et apicali latiuscule infuscato. Yena ulnaris 

 6-7-ramosa ; pra?terea ramo incomplefco, alterisque rudimentariis, venam dividentem haud attingentibus. 



5 . Pronotum corneum, parabolicum, margine anteriore et laterali semi-elliptico, posteriore transverso, lato, 

 subaugulato, angulis lateralibus leviter rotundatis. Discus convexiusculus, impressionibus nullis, fusco- 

 niger, marginibus lateralibus flavidis. Elytra abbreviata, primum abdominis segmentum tegentia, fusco- 

 nigra, venis distinctis, apice late rotundata, area costali ilavida. Alse rudimentariae, flavicantes, segmentum 

 mediale haud superantes, apice fuscae vel maculosaa. 



5 . Long. 16 ; pronot. 5, latit. pronot. 6*5, long, elytr. 8, latit. elytr. 5-25 millim. 



cJ . Long. 21 ; pronot. 5*2, latit. pronot. 6-3, long, elytr. 23, latit. elytr. 6*8 millim. 



Hab. Noeth Ameeica, Texas. — Noeth Mexico (Mus. Genavense). 



This species differs from /. couloniana ( 6 ) in its pronotum being more coriaceous 

 and quite black, except its lateral margins. 



[2. Ischnoptera uhleriana, Sauss. (Tab. III. figg. 21-23.) 



Ischnoptera uhleriana, Sauss. B,evue et Mag. Zool. xiv. p. 169 (1862) ; Mem. Mex., Blatt. p. 82. 23 

 (c?) ; Miss. Scient. Mex v Orthopt. p. 55. 2 (^). 



c? . Pallide testacea, fulva. Pronotum ellipticum, utrinque subdeflexum, circumcirca pallidius ; impressionibus 

 disci parum profundis, obsoletis. Elytra fulvescentia. Alae subvitreae, venis testaceis, venulis costalibus 

 medii campi marginalis incrassatis, brunneis ; vena ulnari ramis apicalibus 5-6, alterisque abbreviatis 2-3. 

 Lamina supra-analis trigonalis. (Var. fulvescens.) 



5 . Fuscescens, capite, pronoto, elytris pedibusque testaceis. Caput flavidum, facie media brunescente. 

 Pronotum quam in S minus ellipticum, subcorneum, impressionibus obliquis disci obsoletissimis ; margine 

 posteriore minus arcuato, disco rufo-brunneo. Elytra abbreviata ad 3 m abdominis segmentum extensa, 

 fulvo-testacea, apice late rotundata, margine exteriore arcuato, apice fere regulariter rotundato, campo 

 costali translucido, venis brunneis. Alae breviores, primum abdominis segmentum tegentes. Abdomen 

 superne et inferne fuscum ; segmentis margine laterali et posteriore testaceo. Lamina supra-analis 

 trigonalis. Cerci testacei, basi et subtus fusci. 



2 . Long. 11*7 ; elytr. 6, latit. elytr. 3*6, pronot. 3*5, latit. pronot. 4'75 millim. 



S . Long. 17 ; elytr. 17*8, latit. elytr. 5'2, pronot. 4, latit. pronot. 5-3 millim. 



Hab. Noeth Ameeica, Georgia, Texas, New Mexico.] 



