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Show 568 DR. A. G. BUTLER ON LEPIDOPTERA [June 19, 54. ZlZERA KNYSNA. Lyccena knysna, Trimen, Trans. Ent. Soc. Lond. 3rd ser. vol. i. p. 282 (1862). o* 2 •> Mtoto wa Ande; shores of Lake Baringo; Njempo. 55. ZlZERA GAIKA. Lyccena gaika, Trimen, Trans. Ent. Soc. Lond. 3rd ser. vol. i. p. 403 (1862). S 2 > Njempo. 56. LYCCENESTHES AMARAH. Polyommatus amarah, Guerin, Lefebvre's Voy. en Abyss, p. 384, pi. 11. figs. 5, 6. 3 2 i Larabwal, Laitsipia. 57. LYCJENESTHES KERSTENI. Lyccena kersteni, Gerstacker, Archiv fur Naturg. 1871, p. 359. n. 27 ; Van der Decken's Lep. Ost-Sibiriens, p. 373. n. 27, pi. xv. fig. 5 (1873). One fragmentary male, from Mtoto wa Ande. I am at a loss to understand why Mr. Trimen regarded this species as synonymous with L. larydas; the two forms appear to me as distinct as any of the species in the genus and only show a resemblance to each other on the upper surface; but even there the shade of deep blue in the males differs and the form is strikingly different, the front wings of L. kersteni being elongate-triangular, those of L. larydas comparatively short in the costa and consequently with the outer margin almost straight instead of very oblique. Taking the entire outline of L. larydas it roughly represents a semicircle, whilst that of L. kersteni more nearly approaches a triangle with truncated apex. 58. CATOCHRYSOPS OSIRIS. Lyccena osiris, Hopffer, Ber. Verh. Ak. Berlin, 1885, p. 642. n. 21; Peters's Reise nach Mossambique, v. p. 409, pi. 26. figs. 11, 12 (1862). No exact locality given ; probably Sabaki Valley. 59. POLYOMMATUS B^ETICUS. Papilio bceticus, Linnaeus, Syst. Nat. i. 2, p. 789. n. 226 (1767). 3 2 > Ngatana in coitu; Kavaluki Valley, Ukamba. 60. CASTALIUS GREGORII, sp. n. (Plate XXXVI. fig. 3.) 6*. Allied to C. calice and C. cretosus; above nearest to the latter, the white area of the primaries still wider, the submarginal spot crossed by the radials larger, but no white spots on the outer border below it: secondaries above with the basal third greyish, traversed by nearly straight blackish bars, partly visible through the wing, and further obscured by long greyish hair; outer border |
