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Show -•*• 134 MR. A. a. BUTLER ON THE GENUS TERACOLUS. [Jan. 18, the base ; they could not constitute the genus ldmais eveni in sense, inasmuch as Boisduval indicates I. calais as his type, "SNo~us avions donne primitivement a ce genre le nom de Calais, en prenant comme generique le nom- de l'espece la plus connue ; mais comme ce changement de nom specifique en nom generique n'est pas sans inconvenients, nous lui avons substitue celui d ldmais. For my part I see litde utility in distinguishing a group so manifestly intermediate between the T. halimede and Calais groups, more especially since the structural distinction is confined to one sex. 6. Wings entirely orange or white above, with black discocellular spots in primaries, and a maculated black border expanding primaries towards the costa, and more or less enclosing a series of orange or white spots. 26. TERACOLUS FAUSTA. Papilio fausta, Olivier, Voy. dans l'Emp. Oth., L'Egypte et la Perse, Atlas, pl. 33. figs. 4 a, b (1801). Pieris fausta, Godart, Enc. Meth. ix. p. 132. n. 41 (1819). Pontia fausta, Klug, Symb. Phys. pl. 8. figs. 9-12 (1829). ldmais fausta, Boisduval, Sp. Gen. Lep. i. p. 586. n. 2 (183b). * rS ?', Baghdad (W. K.Loftus). B.M. Mr. Moore has this species from N.W. India. 27. TERACOLUS FAUSTINA. ldmais faustina, Felder, Reise der Nov. Lep. ii. p. 190. n. 187, •(1865). ? The colouring of the underside differs from any thing that I have seen ; the spots on the disk being lutescent or orange. 28. TERACOLUS ROSACEUS, n. sp. (Plate VII. fig. 6.) S . Wings above precisely like dark females of T. fausta, excepting that the secondaries have a" white patch above the subcostal nervure, and the marginal black spots are linear : wings below pale creamy yellow ; primaries with the discocellular spot small, lunate, black, with light centre; apical border rosy, bounded within by six ill-defined spots of the ground-colour, limited by an inner series of decreasing spots, the upper four rusty, the lower two minute and black; secondaries with a pale-centred buff discocellular spot; seven discal spots in a J-shaped series, the first brown, the remainder buff-coloured ; outer border rosy; body -below creamy-white. Expanse of wings 1 inch 9 lines. Akote. Type, coll. F. Moore. The succeeding species is nearly allied, but seems to me to be distinct. 22. TERACOLUS ORIENS, n. sp. (Plate VII. fig. 7.) 3 . Wings above precisely like dark females of T. fausta, ex- |