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Show 96 MR. R. TRIMEN ON BUTTERFLIES [Jan. 20' Oamatako (January). Nine examples ; seven males and two females. Excepting two from the last-named locality, all these specimens are rather small. 86. PIERIS SEVERINA (Cram.). 2 • Papilio severina, Cram. op. cit. iv. pi. cccxxxviii. ff. G, H (1781). Omrora (August) and Ehanda (August-September). Two male examples. These two rather small males closely agree with the two from Limpopo River, noted in m y ' South-African Butterflies' (iii. p. 70), having the underside of the hind wings clear lemon-yellow with the neuration almost without fuscous clouding. Genus HERP^ENIA, Butl. 87- H E R P ^ E N I A E R I P H I A (Godt.). Pieris eriphia, Godt. Encycl. Meth. ix. p. 157. no. 134 (1819). cf. Pontia tritogenia, Klug, Symb. Phys. t. viii. ff. 17, 18 (1829). Ehanda (August-September), H u m b e (October), Okavango River (December), and Omaramba-Oamatako (January). Twenty-four examples ; twenty-two males and two females. The Ehanda specimens (twelve males and a female) all belong to the var. melanarge, Butl., in which the hind wings and the apex of the fore wings are on the underside suffused with dull ochry-reddish (in the paler parts with a carneous tinge). All the other specimens, taken in three different localities from October to Januarv, are of the ordinary typical form ; and there thus appears some evidence for thinking that the var. melanarge, met with only in August and September, will prove to be a form of the species peculiar to the cool or dry season \ The underside colouring is probably protective during the parched state of the earth and herbage. Genus TERACOLUS, Swains, 88. T E R A C O L U S SUBFASCIATUS, Swains. Teracolus subfasciatus, Swains. Zool. Illustr. 2nd ser. iii. pi. 115 (1833). Omrora (August), Ehanda (August-September), and Omaramba- Oamatako (January). Fourteen examples; thirteen males and one female. These localities show a further range northward for this beautiful species than was previously known, Ehanda being in about 16° S. lat. The four male examples captured in August and September 1 In Angola rain falls only during the hot season, from the end of October to the beginning or middle of May (see Montciro, ' Angola and the River Congo,' ii. p. 233); and I am informed that similar climatal conditions prevail in Ovampo-land. |
