16 OETHOPTEEA. 



[2. Ectobia livida, Fabr. et auct. 

 This European species has been found in South America, and will most probably 

 overrun the whole of the New World.] 



THEGANOPTERYX, Brunn. 

 Theganopteryx, Brunner de W. Syst. Blatt. p. 53 ; Saussure, Melang. Orthopt. i. 2 e fasc. p. 49. 

 Pseudectobia, Saussure, ibid. pp. 49, 54. 



The genera Theganopteryx and Pseudectobia are connected by so many transitional 



forms, that they may be treated as one *. 



Elytra venis longitudinalibus saltern 2: vena media longitudinalis, a vena discoidali distincta; campi discoi- 

 dalis venae numerosae, longitudinales vel oblique pectinatae. 



Synopsis specierum. 



1. Alarum vena ulnaris haud ramosa, indivisa vel furcata. — Theganopteryx, Br., Sss. 



a. Pronotum posterius arcuatum, scutellum obtegens. Pronotum castaneum. — 1. fallax, Sss. 

 aa. Pronotum posterius subrectum, scutellum liberans. Pronotum flavo-marginatum.— 

 [2. pilosella, sp. n.] 

 11. Alarum vena ulnaris ramosa (Tab. IV. fig. 18). Pronotum postice subrectum, scutellum 

 liberans. — Pseudectobia, Sss. 

 a. Pronotum utrinque testaceum. Elytra elongata. 



b. Pronoti discus castaneus. Elytrorum campi discoidali s vense oblique subpectinatae. 

 — 3. subpectinata, sp. n. 

 bb. Pronoti discus castaneus, luteo-picturatus; vel testaceus, fusco-punctatus. Elytrorum 

 campi discoidalis venae longitudinales. — [4. antiguensis, sp. n.] 

 aa. Pronotum totum fusco-nigrum. Elytra brevia, campi discoidalis vense oblique subpecti- 

 natae. — [5. intermedia, sp. n.] 



1, Theganopteryx fallax, Sauss. 



Theganopteryx fallax, Saussure, Melang. Orthopt. i. 2 e fasc. p. 53. 4 (<$) (1869). 



J . Minuta, atra, nitida ; oeellis flavis. Pronotum circumcirca flavo-marginatum, margine posteriore leviter 

 arcuato. Elytra ferruginea, apice subaeuminata, margine costali luteo ; campi discoidalis venae longitudi- 

 nales 5-6, alterisque spuriis intercalatis. Alse amplse ac breves, fusco-nebulosae, margine costali infuscato ; 

 venis costalibus longe leviter incrassatis ; vena ulnari curvata, indivisa ; vena axillari 3-ramosa. Area 

 triangularis apicis minuta, campum anteriorem vix superans. Coxae luteo-marginatae ; spina? pedum 

 ferrugineae. Abdomen anguste luteo-marginatum ; lamina supra-analis late trigonalis, apice rotundata. 



Long. 7 ; elytr. 7 - 5, pronot. 2-5, latit. pronot. 3 millim. 



Hob. Mexico. 



* Erratum. — Apud Saussure, Mel. Ortb. I. c, tbe line " bord posterieur du protborax arque, recouvrant 

 l'ecusson " belongs to £U Theganopteryx, not to !)• Pseudectobia. 



