HYPEKPHEONA. 349 



are high (in Phylloptera they are narrower than high) ; their anterior margin is some- 

 what sinuated in both genera. 



Obs. — The length of the hind femora relatively to that of the elytra, of the inter- 

 mediate tibiae to that of the pronotum, and of the ovipositor to that of the pronotum, 

 must be exactly compared, these proportions being characteristic of the species. 



Synopsis specierum. 



a. Tympana tibiarum anticarum utrinque nuda. Articuli basales antennarum miicolores. 

 Elytrorum latitudo 2\ longitudinem pronoti requans. 

 b. Ovipositor pronoto vix longior. Antennae basi unicolores. Elytra nitida, vena media et 

 vena ulnari apice incurvis; vena ulnari immaculata. — [1. nitidipennis, Stal.] 

 bb. Ovipositor pronoto sesqui-longior. Antennarum articulus secundus nigro -signatus. Elytra 

 parum nitida. 

 c. Elytra maculis ornata : 



d. maculis 2 nitidis, vel pallidis, nigro-cinctis, ac 3 minutis nigris. — [2. prudhommi, sp. n.] 

 dd. maculis 3 fusco-rufis obsoletis. — [3. bidentata, Brunn.] 

 cc. Elytra immaculata. — [4. viridifolia, sp. n.] 

 aa. Tibiarum anticarum tympanum internum conchatum, externum nudum. Articuli basales 

 antennarum nigro-signati. Elytrorum latitudo %\ longitudinem pronoti sequans. Elytra 

 maculis albis 3 circulariter fusco-circumscriptis ornata. 

 b. Articulus primus antennarum unicolor. Elytra in tertia parte apicali latissima ; eorum 

 maculae 3 inter se seque remotse. — 5. trimaculata, Brunn. 

 bb. Articulus primus antennarum nigro-marginatus et nigro-punctatus. Elytra in medio 

 latissima, eorum macula prima a binis alteris magis remota. — 6. irregularis, Brunn. 



[l. Hyperphrona nitidipennis, Stal. 



Plagioptera nitidipennis, Stal, Recens. Orthopt. 2, p. 34 (1874). 

 Hyperphrona nitidipennis, Brunn. v. W. Monogr. der Phaneropt. p. 317. 2. 



Hab. Colombia.] 

 [2. Hyperphrona prudhommi, sp. n. 



2 . Viridis. Antennarum primus articulus margine apicali interno nigro, secundo intus vitta nigra, tertio 

 intus nigro. Verticis rostrum valde compressum. Frontis fastigium triangulare ; carinae infra-oculares 

 parum prominulae. Pronoti canthi laterales rotundati. Elytra tertia parte apicali latiora, maculis in 

 vena ulnari 3 -deque distantibus ; prima majore orbiculari, laete viridi, nigro-cincta ; secunda minuta, nigra ; 

 tertia modica, pallida, nigro-cincta; necnon maculis 2 minutis nigris in ramis venae mediae perspicuis ; 

 venae transversa? campi discoidalis, plus minus viridi-nigrescentes vel nigro-punctatae, in anastomosibus 

 plus minus nigris ; vena ulnaris recta. Vena media in medio vel paulo ante medium furcata ; ejus 

 ramus posterior in macula tertia cum vena ulnari confluens. Ovipositor quam pronotum haud duplo 

 longior, concolor vel rufescens, crasse granulosus, apice crasse serratus, denticulis marginis superioris 

 trigonalibus, parum acutis. 



$. Long. corp. 26; pronot. 5*5; elytr. 35*5, lat. 13; femor. post. 19-5; tib. interm. 9-6; ovipos. 9-5 

 millim. 



Hab. Guiana, Cayenne (Prudhomme). 



