128 DESCRIPTIONS OF NEW SPECIES. 



EVOPLUS LEC. 



Corpus elongato-ovale, convexum, alatum, glabrum. Caput maris bi- 

 cornutum, feminae simplex, pone oculos paulo prolongatnm ; oculi fortiter 

 granulati transversi, cantbo breviter emarginati ; epistoma sutura frontal! 

 distincta, breve, antice late rotundatum, lateribus ultra oculos baud 

 prominulis, margiue apicali coriaceo, sutura baud separate ; labrum breve 

 antice rotundatum. Antennae capite paulo longiores, incrassatse, per- 

 foliatse, articulis 1-3 baud dilatatis, 2ndo breviore, 4to triangulari latiore, 

 5-10 transversis, llmo ovato, externis nitidis vix punctatis, laxe pilosis. 

 Mentum triangulare, ligula apice Integra, palpis labialibus brevibus, 

 cylindricis. Mandibulse apice acute bifidae ; palpi maxillares articulo 

 ultimo elongato-ovali. Elytra apice conjuuctim rotnndata, epipleuris ad 

 suturam ultimam ventralem extensis, abdomine haud breviora, pygidio 

 occulto. Prosternum postice declive, mesosternum parvum declive ; ab- 

 domen processu intercoxali lateribus obliquis, apice truncate, suturis tertia 

 et quarta exaratis. Pedes mediocres, tibiis anticis paulo dilatatis, extus 

 subtiliter serrulatis, apice recte truncatis ; coxis mediis episternis arete 

 inclusis, trochantino nullo ; tibiis posterioribus gracilibus, calcaribus 

 minutis ; tarsis breviusculis, subtus setosis, posticis articulo Imo sequen- 

 tibus duobus haud longiore ; ultimo longiore. 



The head of the male, although armed with two long horns, is 

 quite different from that of Hoplocephala : in the latter the horns 

 are between the eyes, not in contact with their margin, and the 

 vertex and occiput are deeply excavated at the middle ; the an- 

 terior margin of the epistoma is reflexed and bidentate. In the 

 present genus the horns rise abruptly from the inner margin of 

 the eyes, and there is a large rounded excavation behind each 

 of them, the middle of the vertex and occiput being convex ; the 

 epistoma is not margined or prominent in front, although armed 



with two small, distant, dentiform tubercles. 







4O7. E. ferruginea. Elongato-ovalis, convexa, ferruginea nitida, 

 capite punctulato, tborace punctato, basi vix bisinuata tenuiter mar- 

 ginata ; elytris striis profundis punctatis, interstitiis convexis parce 

 punctulatis, stria scutellari brevi. Long. '20. 



Mas capite cornubus duobus elongatis cylindricis armato, pone cornua 

 utrinque valde excavate ; epistomate versus apicem denticulis duobus 

 remotis armato, dein subsinuato. 



Hemina capite mutico, fronte lunatim impresso, epistomate apice late 

 truncato. 



Louisiana ; Messrs. "Wapler and Guex. A very singular insect, 



