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Show 1893.] BRITISH CENTRAL AFRICA. 665 African species which agrees with Felder's description closely enough (I should have imagined) to satisfy anyone; but, probably because the base of the front wings on the under surface is said to be tinted with sulphur (a character only faintly indicated at the base ot the costal border in the males), it is regarded as a variety ol B. severina. Felder, comparing his Pieris agrippina with the latter species, rightly observes that it has the costal margins of the wings longer and the cells longer and narrower; he also notes that the white spots on the black apical area of the primaries are tolerably large, the inner edge of the outer border of the secondaries squamose, and the veins on the under surface of the same wings violaceous brownish, none of which characters are found in typical B. severina, nor have I ever met with a variety of that species possessing them. B. lordaca is, as Trimen observes, doubtless the same species as B. mesentina ; but as to B. awiginea being the spring brood, Col. Terbury's collection rather tended to show that it prevailed in the autumn, if I remember rightly. 114. BELENOIS GIDICA. Pieris gidica, Godart, Enc. Meth. ix. p. 131, n. 37 (1819). 2, Lake Mweru. 115. BELENOIS CRAWSHAYI, sp. n. 3 • Allied to B. zochalia. Above greenish white : primaries with silvery sericeous base; costal margin slenderly edged with black; the external border formed as in B. calypso,but rather more decided and without the apical white streak between the first and second spots; the five spots which remain quite white, the first, third, and fifth small and sagittate, the second larger and pyriform, the fourth minute and squamose; a very conspicuous black spot on the lower discocellular veinlet: secondaries with well-defined marginal black spots. Primaries below with the apical area pale sulphur-yellow, crossed by olive-brown veins and edged internally from costa to lower radial vein by an irregular narrow band of the same colour, below this by a grey lunule which connects it with a triangular black spot on second median interspace ; black discocellular spot as above : secondaries creamy sulphur, with basal third of costal margin and a short interno-median basal streak of saffron- or cadmium-yellow; the veins, a forked marking in the cell, an oblique bar on the lower discocellulars, two or three squamose streaks across the base of the interno-median and first median areas, a partly disconnected zigzag submarginal stripe, and a series of broadly triangular marginal spots pale olive-brown ; fringe white, spotted with grey and tipped with black at the extremities of the median branches : body below creamy whitish, the palpi pure white. Expanse of wings 63 mihj n. Lake Mweru. W e have two males of this species in the Museum from Lake Tanganyika. 45* |