OCR Text |
Show 90 DR. A. GUNTHER ON THE ZOOLOGICAL [Feb. 6, the other halfway between the latter and the apex of the membrane : length of body 2\ millimetres, of entire insect with the wings closed 4 millimetres. Three specimens, Charles Island (C. Darwin). A very pretty and well-marked species. 9. MONANTHIA CYTHARINA, 11. Sp. Filiform, general aspect and coloration of M. debilitata. Head pyramidal, white, the central area longitudinally subcylindrical, with a central carina, reticulated with brown ; thorax much wider than long, with compressed angular lateral wings, subsinuate in front, centre of anterior margin deeply excavated, three well-defined longitudinal keels, the central one straight, the two lateral ones concave ; brown, with white borders and keels, the whole surface reticulated with darker brown ; scutellum cordiform, brown, with darker reticulations, a central longitudinal white keel; basal half of hemelytra broad and externally strongly convex; apical area narrower and less convex ; each hemelytron with a longitudinal fusiform area enclosed by a keeled margin, from the base to the middle ; central area brown, with the keels and a central A-shaPed marking white ; costal borders white, with a quadrate spot near the base and several at apex dark brown ; the whole surface reticulated with dark brown ; legs and antennae testaceous : length 3 millimetres. One specimen, James Island (C. Darwin). HEMIPTERA HOMOPTERA. 1. Issus VARIUS. Lssus varius, Walker, Cat. Homopt. ii. p. 372. James and Charles Islands (C. Darwin). 2. ISSUS ROSTRIFER, n. Sp. Head conical, rostriform when viewed laterally, leaf-like above, with a marginal and a central longitudinal ridge ; pronotum considerably wider than long, convex in front, concave behind, with a prominent tubercle behind the antero-interior angle of each eye; meso- and metanotum narrow, irregular, with a central longitudinal carina ; scutellum triangular with sinuated sides, and narrow marginal ridge ; abdomen laterally compressed, somewhat depressed at base, so that the scutellum, seen laterally, forms with the metanotum a projecting tubercle ; tegmina semicircular, reticulated ; colour testaceous, head above brightest in tint: length 3 millimetres. Charles Island (C. Darwin). 3. DELPHAX SUBSTITUA. Delphax substitua, Walker, Cat. Homopt. ii. p. 354. n, 21. Charles and James Islands (C. Darwin.) 4. DELPHAX VICARIA. Delphax vicaria, Walker, Cat. Homopt. ii. p. 355. n. 23. Charles and James Islands (C. Darwin). |