254 ORTHOPTERA. 



nigra. Pronotum breviusculum, supra deplanatum, crassiusculum, scutello disci illo (E. nivei conforme ; 

 posterius ante basin sulcis 3 longitudinalibus postice in arcum conjunctis notatum ; loborum lateralium 

 margine inferiore subrecto vel leviter arcuato. Alee breviter caudatae. 

 Var. Primus articulus antennarum subtus linea ac puncto nigro libero ornatus. 



Hab. North America, Dallas in Texas. — Mexico, Ciudad in Durango, Mazatlan 

 (Forrer). — ? Argentina. 



This species was described upon two specimens labelled as from Argentina ; but the 

 locality requires confirmation, to judge from the fact that numerous specimens have 

 been found in the central parts of America. 



3. (Ecanthus nigricornis, Walk. 



(Ecanthus nigricornis, Walk. Cat. Derm. Salt. i. p. 93. 2 (?) ; Sauss. Miss. Scient. Mex., Orthopt. 

 p. 461. 4. 



(E. niveo simillimus at major. Caput retroproductum. Antennae plerumque totse nigrae, articulis l°-2° testaceis ; 

 vel runs, primo articulo in margine interno linea fusca obsoleta. Pronotum supra planum, quam in 

 (E. niveo paulo longius ; ejus scutellum subquadratum, antice complete apertum, ad marginem posticum 

 in medio sulcis 2 brevibus impressum. Alee breviter caudatae. 



Var. Antennae rufescentes, apice testaceae. 



Hab. Mexico, Ciudad in Durango {Forrer), Chilpancingo in Guerrero 4600 feet 

 (H. H. Smith), Jalisco (Schumann), Temax in North Yucatan (Gaumer). 



The antennae of most of the specimens are black, but in others they are paler ; the 

 two basal joints are rufo-testaceous, with their inner margin brown. 



[4. (Ecanthus lineolatus, sp. n. 



c? . (E. niveo simillimus. Differt ab illo antennarum articulis primo secundoque subtus lineola subtili nigra, 

 sicut in varicomi. Ala? elytris breviores, in requiete haud perspicuas. (Pronoti scutellum illo (E. nivei 

 conforme.) <E. californico, Sss., formis et alis simillimus ; differt tamen pictura antennarum et pronoti 

 scutello. 



Long. corp. 10—11 ; pronot. 3 ; elytr. 10 ; fern. post. 7*8 millim. 



Hab. Brazil, Rio Grande do Sul (Dr. Thering, Mm. Genavense). 



(E. californicus, Sauss., much resembles this species ; it also has the wings somewhat 

 abbreviated, but the first joints of the antennae are without black markings.] 



5. (Ecanthus varicornis, Walk. (Tab. xn. figg. 24, 25.) 



(Ecanthus varicornis, Walk. Cat. Derm. Salt. i. p. 94. 4 ( <£ ) ; Sauss. Miss. Scient. Mex., Orthopt. 



p. 460. 3 ( ? ). 

 ? (Ecanthus peruvianis, Walk. loc. cit. p. 95. 8 (<J). 



Gracillimus. Articuli l™ 8 ^" 8 antennarum subtus lineola angusta longitudinali nigra. Caput elongatum, occipite 

 retroproducto, quam genae infra oculos longiore, sensim ut in <E. bipunctato. Oculi elliptici, quam in 

 (E. niveo paulo longiores. Palpi graciles. Pronotum gracile, elongatum, marginibus lateralibus subrectis ;. 

 scutello dorsale leviter ovato, paulo longius quam lato, antice aperto. Alee longiuscule caudatae. 



2 . Elytra in dorso remote reticulata. 



