THRINACONYX. 179 



Synopsis specierum. 



a. Tibiae anticse extus spinis 2. — 1. fumosus, sp. n. 

 aa. Tibiae anticse extus spina 1. — [2. kirschianus, sp. n.] 



l. Thrinaconyx fumosus, sp. n. (Tab. X. %g. 4-10.) 



<S . Eulvo-fuscescens vel brunneus. Caput sat minutum, valde transversum ; oculis tumidis trigono oris minuto ; 

 fronte inequali, trituberculata, tuberculo medio majori, elliptico, ad vertieem producto ; lateralibus 

 minutis, utrinque inter sulcos exsertis, a vertice remotis. Vertex compressus, transversus, oculos haud 

 superans. Prothorax breviusculus, angustus, fulvo-fuscus, subverruculosus ; ejus colluni parallelum, quam 

 pars postica angusta paulo brevius ; ampliatione rhomboidali rotundata. Pars posterior quam pars ante- 

 rior paulo longior, angusta quam collum baud latior, marginibus totis remote denticulatis. Elytra et alae 

 ampla, diapbano-fuliginosa, obtusa. Elytra paulo obscuriora, lata, venulis transversis obliquis, partim 

 in medio hyalinis. Campus marginalis arcuatus, latiusculus ; margiue ad medium haud sinuato, apice 

 necnon vena humerali et discoidali arcuatis. Alarum campus anterior apice venulis transversis hyalinis ; 

 vena ulnari ultra medium furcata. Campus posterior pallidior, vena axillari ultra medium furcata. 

 Pedes antici gracillimi, pubescentes, rufidi, extus fusco-fasciati, coxis fascia postica infuscata. Coxae 

 retro prothoracem superantes, basi incrassatae, margine antico subtilissime denticulato. Femora gracil- 

 lima, fere dimidia parte apicali lineari, latere interno fusco, margine interno spinis 7 (2 a , 4a, 5« minutis, 

 6 a a 5 a valde remota ; ultima, scilicet praeapicali, brevi). Tibiae breviter pilosae, graciles, extus spina 1, 

 intus 2 ; spinis apicalibus superis 2 brevioribus incurvis. Pedes postici et intermedii lutei, fusco- 

 fasciati. Abdomen modice longum ; lamina supra-analis trigonalis, aeque longa ac lata, haud producta, 

 plana. Cerci modice longi, acuminati. Lamina infra-genitalis supra-analem superans. 



Long. 13*5 ; pronot. 3*7, femor. ant. 4, alar. 13-75, elytr. 13, latit. elytr. 4 millim. 



Hah. Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion). 



A very distinct species. The superior part of the face bears three very rounded 

 tubercles. The marginal field of the fore wings is not attenuated from the middle, but 

 only in its apical part. 



[2. Thrinaconyx kirschianus, sp. n. (Tab. X. fig. 11.) 



<$ . Gracillimus, fuscescens. Caput transversum, vertice valde compresso, acuto, quam oculi paulum altior, 

 4-sulcati. Oculi grandes, tumidi, inferius parum convergentes. Prothorax brevissimus, subfiliformis, 

 subtiliter carinatus ; marginibus tenuissime denticulatis ; collo rugoso leviter granulato ; ampliatione 

 utrinque deflexa, angulis rotundatis. Elytra et alae ampla, diaphano-fusca. Elytra quam alae breviora. 

 Alse lata?, apice truncato-rotundatae, campo antico posticum parum superante, sinu anali fere nullo. 

 Venffi ulnares arcuata?, antica ultra medium furcata. Pedes filiformes, modice longi, fusco-annulati. 

 Coxa? anticse basin versus incrassatae. Eemora subfiliformes, ultra medium sicut excisa ac filiformia, 

 spina apicali nulla. Tibiae partem filiformem femorum aequantes, apice leviter tumidae, subito truncatae, 

 superne spinis 2 apicalibus longis arcuatisque, parum inaequalibus, armatae ; margine interno in dimidia 

 parte apicali spinis 2 longis, gracilibua, acutissimis, ultima praecipue longissima, necnon inter illas spinula 

 iustructo ; margine externo spina unica ad tarsum, armato. Tarsus fere longitudine femoris. Abdomen 

 breve, gracillimum. Lamina supra-analis trigonalis, a lamina infra-genitali superata. Cerci breviusculi, 

 moniliformes, 8-9-articulati. Styli inaequales. 



Long. 19 ; pronot. 4-4, elytr. 15, latit. elytr. 5-5, alar. 16, femor. post. 4-5 millim. 



Hab. Colombia (Mus. Lugduni-Batavorum). 



This species differs from T. fumosus in having the two superior apical spines of the 



anterior tibiae elongate.] 



2 A a2 



