THESPEOTIA.-— OLIGONYX. 171 



[5. Thesprotia fuscipennis, sp. n. 



d . Longissimus, graeillimus, filiformis, griseus : pedibus fusco-punctatis, anticis maculosis. Caput transversum ; 

 vertice transverso, quam oculi haud altiore, sed utrinque dentem obtusum juxta-ocularem efficiente. 

 Prothorax loDgissimus, carinatus, haud granulatus ; marginibus anguste pallidioribus, nigro-punctatis, 

 densissime subtilissime denticulatis, brevissime fimbriatis ; collo parallelo vel subconstricto, apice truncato. 

 Elytra et alae infuseata, venis fuscioribus. Elytra alis breviora, venulis transversis ad venas opacis, 

 dehine et venis spuriis subtilissimis. Alae angustissimae, vena ulnari in parte distali furcata. Pedes 

 omnes filiformes. Coxae anticse valde nigro-maeulosae ; femora extus sparse nigro-punctata, intus in 

 longitudinem nigro-maculata vel lineata. Eemora intus linea interrupta nigra ; utrinque tantum in 3 a 

 parte apicali spinosa ; spinis discoidalibus raajoribus 4 ; margine interiore spinis 6 brevibus, prima inter 

 2 am et 3 am discoidalem perpendicular!, longiore ; reliquis nigris minutis ; 4 a , 5 a minimis ; margine exteriore 

 spina unica ultra 4 am discoidalem exserta ; spinis apicalibus nullis. Tibiae anticae spinis 4, scilicet spinis 

 apicalibus 3 plus unguis subrectus (spina supera majore arcuata) ; necnon spina imae baseos externa. 

 Lamina supra-analis ? 



5 . Mare simillima. Femora anteriora latere interno fascia longitudinali nigra interrupta. Lamina supra- 

 analis cercos leviter superans, apice rotundata. 



c? . Long, circa 55 ; pronot. 15-6, femor. ant. 10, elytr. 25*5, latit. elytr. 5, long. alar. 27 millim. 



2 . Long. 53 ; pronot. 18*5, femor. ant. 10 millim. 



Hab. Brazil, Rio Janeiro (Goldi: $ 6 ).] 



OLIGONYX, Sauss. 



Oligonyx, Sect. l a , Saussure, Bull. Soc. Ent. Suisse, in. p. 58 (1869) ; Mem. Mex., Mantid. p. 117; 

 Stal, Syst. Mantod. p. 45 ; Saussure, Societas Entomologica, 1892, p. 122. 



Corpus quam in genere Thesprotia minus gracile, $ crassiusculum. Caput transversum, antice planatum ; 

 fronte subgibberosa, supra ocellos sulco 5 transverso arcuato notata ; vertice comprespo, acuto, bilobato. 

 Prothorax modice longus vel brevis, totus tenuiter denticulatus, ampliatione rhomboidali ; collo elongato, 

 angusto, anterius attenuato, vel $ parallelo. Pedes antici graciles ; coxae carinis valde expressis, rectis. 

 Femora plus quam dimidia parte apicali spinosa, margine interno tantum spinis 7-8 ; apice spinula prae- 

 apicali utrinque ; basi spinis discoidalibus 4, quarum ultima minima, reliqua subaequalia. Tibiae brevis- 

 simse, teretes, superne intus carinulatae, spinis extus 1 magna, intus 8 (1— 4 + 11+1) ; ultima interna ad 

 superum dejecta, subdorsali, subrecta, nee erecta, nee divergens (praecedentibus 2 longiusculis, basalibus 

 4 minutis dentuliformibus). Tibiarum spinae in feminis validae. Lamina supra-analis elongato-lanceolata. 



S d • Elytra et alae angusta. Elytrorum area costalis plus minus irregulariter reticulata, area discoidali- 

 mediastina remote oblique venulosa ; vena media indivisa. 



In this genus the body is neither so elongated nor so slender as in Thesprotia ; some- 

 times the pronotum is short, as in Miopteryx. The head is more transverse, with 

 swollen eyes ; and the vertex, although compressed, and with two juxta-ocular rounded 

 lobes, is not, or but little, elevated. The form of the anterior tibiae is the most evident 

 character of the genus, not being truncate as in Thesprotia (although still short), but 

 slender and armed with more numerous spines. 



The genus is peculiar to Central and North America. The following known species 

 belong to it : — 0. brunneri, Sss. (Colombia) ; 0. scudderi, Sss. (North America, Georgia) ; 

 0. uhleri, St. (Louisiana) ; Mantis parva, Drury (Miopteryx parva, Sss.) (America) ; 

 and six others are described below. 



zz 2 



