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Show 768 MR. A. G. BUTLER ON [Nov. 3, T. vestalis will ere long be discovered. T. phisadia (from Aden evidently) has been redescribed and figured by M . Mabille under the name of ldmais philamene; the form is that figured by Klug as Pontia arne. 32. TERACOLUS CHRYSONOME. Pontia chrysonome, Klug, Symb. Phys. pi. 7. figs. 9-11 (1829). 6* 2 • Bunder Maria, 27th-30th April, 1884.-Yerbury. <S 2 • 2nd January.-Thrupp. The species appears to be tolerably common in Somali-land ; it is quite constant in coloration and markings; as may be seen from Klug's figures, the males only have the base of the wings bluish and white. 33. TERACOLUS PROTOMEDIA. Pontia protomedia, Klug, Symb. Phys. pi. 8. figs. 13, 14 (1829). 6* 2 • Dura, December 23rd.-Thrupp. As usual, this species has not come in good condition ; no specimen hitherto sent to the Museum has been quite perfect. T. protomedia is another of the Aden species introduced into the fauna of Madagascar by M . Mabille ; it is evident that some collection made at Aden has been forwarded to him as from Madagascar. The Lepidoptera of Arabia are peculiar ; they do not, in all probability, range further southwards than Somali, and even there they are frequently replaced by allied but distinct species; that they should turn up again, in no respect modified, in Madagascar, is quite out of the question. 34. TERACOLUS HELIOCAUSTUS, sp. n. (Plate XLVII. figs. 8, 9.) Exactly intermediate between the variety T. miriam of T. pleione and T. acaste, in size, pattern, and colouring. The male has the apical border of T. miriam, but the orange area is confined by the discoidal cell on the anterior half of the wing, and on the posterior half only differs from that on the primaries of T. acaste $ in extending to the base ; the secondaries have the orange costal area of T. acaste, but at the base it fills the discoidal cell and suffuses the interno-median area almost as much as in T. miriam; the black discocellular spot on the primaries is formed as in T. acaste: the under surface shows the orange basal area of T. miriam, but the ochraceous apical area of primaries and entire surface of secondaries of T. acaste. The female exhibits the pattern of T. ccelestis rather than of T. acaste; but the marginal spots are larger than in either ; the costal and internal borders of primaries towards the base are dark greyish ; the discoidal cell and the whole interno-median area, as far as the discal series of spots, are orange, which colour therefore does not extend quite so far outwards as in the male: on the under surface the pattern is the same as in T. acaste $ , but the basi-internal half of the primaries is orange, the apical border ochraceous, and the secondaries yellow with diffused ochraceous external border and orange basi- |
