OCR Text |
Show 1881.] NEW AFRICAN RHYNCHOTA. 273 AURIVILLIANA LURIDA, n. sp. (Plate XXXI. figs. 6 3,7 $ .) Ochraceous, speckled and streaked with fuscous. Antennae pilose, black with the apical joint bright luteous in the male, pale luteous with the apex black in the female ; first and second joints subequal, or second rather longer than first, third shortest, fourth the same length as second. Pronotum transversely striated with fuscous, lateral margins strongly denticulated, lateral angles produced, with a strong tooth at apex, and moderately denticulated behind. Scutellum narrowly black at base, with a central luteous spot. Corium finely speckled with fuscous, and a larger spot of the same colour on disk. Underside of body and legs concolorous. Rostrum about reaching posterior coxae ; second and fourth joints subequal in length, third shortest. 3 - Beneath with a luteous spot on each side at base of sixth segment; apical segment and anal appendages gibbous. Long. 20 millims., abdominal expans. 9. 2 . Much broader than 3; apical segment and anal appendages slightly raised and convex. Long. 23 millims., abdominal expans. 11. Hab. Natal, Delagoa Bay. PETASCELISCA, n. gen. Body oblong. Head subquarlrate, and not emarginate between the antenniferous tubercles. Rostrum not reaching intermediate coxae. Scutellum triangular, obtusely elevated at base. Apical margin of the corium sinuated. Posterior coxae widely separated ; intervening space double that between intermediate coxae ; anterior coxae placed somewhat closely together. Anterior and intermediate femora obtusely noduled, and furnished beneath with two spines near apex ; posterior femora much thickened, dilated, flattened, sinuated, and spined beneath. Anterior tibiae moderately dilated on both sides ; posterior tibiae much more strongly so, above sinuated and prominently rounded about midway, whence to apex they are suddenly narrowed ; beneath as above, but exhibiting a strong tooth in place of, and a little before, the rounded elevation above. Intermediate tibiae simple. Abdominal margins much produced, strongly sinuated and angulated towards apex. Antennae with the first three joints incrassated towards apex, fourth cylindrical. Abdominal spiracles rounded. This genus comes naturally between Petillia and Petascelis. From the first it is separated by the rounded and not widely transverse abdominal spiracles, and from the second by the non-dilatation of the intermediate tibiae. From both, also, Petascelisca is distinguished by the non-emargination between the antenniferous tubercles of the head. PETASCELISCA VELUTINA, n. sp. (Plate XXXI. figs. 8 & 8 a, b c?,9 ?.) Above rich chocolate-brown, sparingly clothed with bright yellow |