EHIPIPTEETX. 213 



Rhipipteryx limbata, Sauss. Miss. Scient. Mex., Orthopt. 356. 1. 

 Rhipipteryx marginatus, Serv. Orthopteres, p. 317. 1 (syn. excl.). 



$ . Nigra, subvelutina. Antennae apice, nee non articulis l°-4° supra, sulfureis. Oculi prominuli. 0rbit83 

 magna parte pronotnmque circumcirca, sulfureo-limbata. Elytra longiuscula, margine suturali anguste, 

 margine apicali latius aulfureo-limbatis. Alae longe caudatae, sulco transverso et margine dorsali medio, 

 sulfureis. Femora anteriora antice linea longitudinali, reliqua extus margine supero ac infero, tibiaeque 

 intermedia? margine supero, sulfureis. Lobi geniculares femorum posticorum sulfureo-limbati. Tibiae 

 posticae nigrae, calcaribus et metatarso sulfureis ; hoc | longitudinem ealcarium aequante. Abdominis 

 segmenta subtus sulfureo-limbata. Appendices anales nigri, 2° articulo ovato. 



3 . Orbitae totae, palpi, femora antica intus marginibus binis, coxae 1, 2 antice, troobanteres intermedii subtus, 

 sulfurei. Appendices anales apice lutei. 



Var. Corporis picturae albidae. 



2 . Long. corp. 8*5, cum. alis 11*5 millim. 



<S . Long. corp. 6, cum alis 10*5 millim. 



Rah. Nicaragua, Chontales (Janson). — South Ameeica, Cayenne (Mus. Genavense). 



7. Khipipteryx hydrodroma, sp. n. 



5 . R. limbatce simillima ; differt ab ilia ut sequitur. Leviter cceruleseens. Orbitae anguste, vel vix luteo-limbatae. 

 Scutellum faciale flavo-bimaculatum. Femora anteriora et intermedia late luteo-limbata vel fere tota 

 lutea. Tibiae intermediae supra latiuscule luteae. Femora posteriora superne haud luteo-limbata, sed 

 lobis genicularibus totis flavis. Tibiae posticae fusco-ocbraceae ; calcaribus quam in R. limbata brevioribus ; 

 metatarsus itaque illis sensim aequilongus, sulfureus. Appendices anales inferi validi, articulo secundo 

 compresso, ovato. 



5 . Longitudo corporis 9, cum alis 11*5 millim. 



Hal. Nicaeagua, Chontales {Janson). — South America. 



Approaches R. circumcincta, Sauss. (Miss. Scient. Mex., Orthopt. p. 358. 4), from 

 South America, but more handsomely marked. 



8. Rhipipteryx mexicana, Sauss. (Tab. XI. figg. 8-19.) 



Rhipipteryx mexicana, Sauss. Rev. et Mag. Zool. 1859, p. 316 ; Miss. Scient. Mex., Orthopt. 

 p. 359. 7. 



Minuta, nigra ; pictura variabili. Antennae articulis l°-4° supra flavis, subtus fuscis, 6°-9° flavis, ultimis 

 2 nigris vel fuscis. Orbitae partim, pronoti margines laterales et posterior, femorum intermedioram 

 margo inferior, tibiarum intermediarum margo superior, femorum posticorum margo superior ac inferior 

 alarumque linea marginalis, citrini. Pronotum antice macula elongata rufa. Pedes antici rufescentes, 

 vel intus testacei. Femora postica intus testacea, extus concha rufescente, lobo geniculari flavo. Tibiae 

 et tarsi postici brunnei, fulvescentes ; metatarso elongato gracili, calcaribus subsequilongo. 



Var. a. Pedes antici latere interno tibiaeque posticae saltern subtus flavicantes, calcaribus supra flavidis. — 

 b. Antennae articulis 5°, 9°, 10° atris. 



2 . Facies plana (fig. 15). 



d 1 . Facies inter antennas vitta transversa scrobiculata flava, impressionibus 1-3 nigris (fig. 16). 



5 . Long. corp. 6, cum alis 6-6 millim. 



cf . Long. corp. 5*5, cum alis 6*6 millim. 



Figures. — For the explanation of the numbers, see anted, p. 201, nota. 



Fig. 8. The extremity of the abdomen, $ , to show the homology of the different parts. The 8th dorsal segment 

 is divided into two separate lobes. The 9th dorsal segment is not visible, but concealed under the 8th. 

 The 10th segment has three parts : two, transverse, enveloping the base of the cerci (c) ; and one, median, 

 elongate, compressed and canaliculated, forming the supra-anal plate or superior valvula of the anus. 



