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Show 1905.] HEMIPTERA o f t h e s u b f a m il y h a l y in j e . 151 head, pronotum, and scutellum seem to be differently sculptured, and there is no annulation to the femora. L e y e n n a , gen. nov. Caput longitucline latius, leviter convexum, apice rotundatum, marginibus anguste re/lexis, ante oculos magnos globosos sinuatis, tylo et jugis ceque longis, illo postice elevato, his antice valde approximatis, ocellis majusculis, in linea inter marginem posticum oculorum ducta positis, a linea media capitis quam ab ocidis saltern duplo et dimidio longius distantibus, bucculis humilibus, rectis; rostro coxas posticas attingente, articulo secundo duobus apicalibus unitis breviore, tertio quarto longiore, tuberculis antenniferis e supero distinguendis, extus spinula porrecta armatis; antennis quadri-articidatis, articulo primo apicem capitis paidlum super ante, secundo longissimo. Pronotum medio capite parum longius, marginibus lateralibus anticis acutis, leviter explanatis et rejiexis, angidis lateralibus hand prominidis, anguste rotundatis, angidis basalibus latissime rotundatis, margine basali recto. Scutellumpone medium leviter sinuatum. Mesosternum carinatum. Orijicia metasternalia in rugam mediocrem continuata. Hemelytra apicem abdominis longe superantia, corio apicem abdominis subattingente ( J ) vel hoc paullo breviore ( $ ), margine apicali levissime sinuato, angulo apicali acuto, membrana venis circiter sex instructa, exterioribus tribus furcatis et pone medium vena transversa conjunctis. A Ice apicem abdominis super antes, sed hemelytris paullo breviores. Abdomen hemelytris hand vel vix latius, subtus utrinque prope basin vitta stridulatoria curvata usque ad apicem segmenti tertiiper tr acta instructum, segmentis quinque primis ventralibus in mare medio valde retractis, quam lateribus fere triplo brevioribus, segmentosexto hujus sexuspermagno,prcecedentibus unitis medio longiore, angulis apicalibus hujus segmenti in mare latissime rotundatis, fere deletis, margine apicali recto, in femina obtusiusculis, margine apicali late arcuato-sinuato, segmento genitali maris latissimo, angulis apicalibusproductis, margine basali sub segmento sexto ventrali subocculto, medio processu liguliformi verticaliter recurvo instructo. Pedes longiusculi, femoribus posticis intus spiculis stridulatoriis uniseriatis instructis; tibiis omnibus femor ibus subcequilongis, superne sulcatis; tar sis triarticulatis, articulo primo tarsorum posticorum incrassato. This remarkable genus is to be placed near Commius Stal, but is at once distinguished by the four-jointed antennae, the very long hemelytia, and the enormously developed sixth ventral and genital segments in the male. The considerable length of the hemelytra is probably due to the necessity for preserving the inner parts of the very wide and open male genital segment from injury. |
