OCR Text |
Show S MR. A. G. BUTLER ON NEW [J 13. C H C E R O C A M P A GRACILIS, n. sp. (Plate II. fig- 2.) Nearly allied to C. eson, about one third smaller; the wings and abdomen, as com pared with the size of the insect, longer; the primaries decidedly less distinctly streaked, the streaks also narrower ; secondaries blacker at base, much whiter at anal angle ; lateral streaks of thorax much whiter ; abdomen very indistinctly streaked, not showing the two broad longitudinal central brown bands; wings below less irrorated with brown, central oblique lines of primaries not extending beyond the middle of the wing from costa; abdomen below not showing the lateral blackish points. Expanse of wings 3 inches to 3 inches 2 lines. Congo (Bichardson), Sierra Leone (Morgan). Type, B.M. W e have four examples of this species. 14. CHCEROCAMPA ELEGANS, n. sp. (Plate II. fig. 1.) cS 2 • Allied to the preceding species (with which it agrees in size) and to C. theylia. The male may at once be distinguished from both by its much more acute and narrow primaries; and both sexes may be distinguished by having a distinct, whity brown, longitudinal band from the back of the head to the end of the abdomen, the pterygodes more brightly coloured, and the anal margin of secondaries less excavated. In size it exceeds C. theylia by about one half; and the white nebula at anal angle of secondaries is more vivid ; on the underside of primaries the terminal grey boreler is well marked. Expanse of wings, S 2 inches 9 lines, 2 3 inches 1 line. S, Java (Horsfield); 2 > Silhet (Stainsforth). Type, B.M. Mr. Walker says that " C. eson in Asia is very generally of small size, and in Africa of large size, but the latter variety also occurs in Asia," C. eson and C. gracilis being the large African forms, O. elegans the large Asiatic and C. theylia the small Asiatic form. 15. CHCEROCAMPA ARGENTATA, n. sp. (Plate II. fig. 3.) General form and markings of C. oldenlandice, wings shorter, inner margin of primaries much more excavated, all the brown markings much darker, the silver lines more vivid, the line down the centre of pterygodes and the lateral streaks of abdomen vivid golden sprinkled with reddish scales; primaries more silvery at base, the pale oblique bar of primaries slightly broader, the outer margin somewhat plumbaginous ; secondaries darker, the pale streak redder in tint: wings below altogether redder, the markings darker, the outer margin more plumbaginous; abdomen with a white ventral streak. Expanse of wings 2 inches 10 lines. Moreton Bay (Gibbon), N. Australia (Elsey), Sydney (Lambert), Australia (Stevenson). Type, B.M. This is the Australian representative of C. oldenlandice • it is undoubtedly a distinct species, but may be an insect described by Mr. Walker of which 1 cannot find the type. A third species also exists in North Australia ; but our example is in such a poor condition that 1 could not venture to make a type of it. |