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Show 870 4PPB3DIX Q.~ QfftBOTS# point above. W spot near the apex wanting. Beneath, yellow; end of the hanstellnm a few points near the joints of the feet, and a transverse line at the base of the abdomen, black. Medial and posterior femora with an impressed stria fcltag the inferior surface. Entire length thirteen, of the body nine and a- half, expanse of the wings twenty- three lines. This small species seems to be allied to ( 7. rimoM of Say. It belongs to the section of 0. ieptemdecim, in which the (( rums are exposed so 4* to render ( heir action visible in the living inBect. * • ZAITHA BETICtJLATA, Hald. Dark brown, hanstellnm stout, and curved, scntel longitudinally rugose, elytra with distinct raised reticulations; wings white, abdomen black, apex beneath paler, pectus varied with yellowish, and the externa} margin, of the posterior femora, of the same colour. Length eight and a- half, breadth four and, a- half Ikies. This species is allied to Z. Uttaeea and Z. aurantiaca of Leidy, ( who described them under the .^ generic name of JPerthoiloma,) in the Journal of Acad. Nat. Sci. of Philadelphia, 1847, p. 60; but the colour is deeper, and it is at once distinguished by the raised reticulations upon ^ ths elytra. ZAITgA BIFOVEATA, fral<}. P*. X ft*. 1. . Brownish- yellow, scutel and beneath darket; head much advanced in front, haustdlum very long, and curved nearly in a quadrant", antennae hairy, the three terminal articulations parallel, curved, and of equal length,, the apical one thickest, but scarcely differing in shape. Pronotum punctate, the anterior two- thirds finely, and the posterior third'more coarsely tod confluently; a fotea without punctures upon each side, about a line from the anterior or lateral margins; scutel punctate, With the disk longitudinally rugose* . Feet maculate with brown; margin of the venter maculate- with flavous. Length shtteen, breadth seven, head nearly three, hanstellnm three and a- half lines* Fort Gates, TexaSr This is the largest species of the genus, but it has the characters of the antennae and rostrum, the long anterior coxae, slender feet, and terminal nervures of the elytra without an& sto* 4noses, which distinguish this genus from Bdostoma. In Belottoma, the wing when folded has four nervures ( omitting that of the fold) which reach the margin; in Zaitha there are but |