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Show 578 DR. A. G. BUTLER O N LEPIDOPTERA [June 19, 107. CATOPSILIA FLORELLA. Papilio florella, Fabricius, Syst. Ent. p. 479. n. 159 (1775). 3 2» Ndoro, steppes at base of Kenya, 7000 feet; Ndangi River. 108. GLUTOPHRISSA CONTRACTA. Glutophrissa contracta, Butler, P. Z. S. 1888, p. 75. n. 102. 3, Ngatana ; $ , Lake Losuguta, 109. PHRISSURA LASTI. Mylothris lasti, Grose-Smith, Ann. & Mag. Nat. Hist. ser. 6, vol. iii. p. 124 (1889). Belenois lasti, Smith & Kirby, Rhop. Exot. ii. pi. Belen. ii. figs. 1-3 (1892). 3 2 5 Sabaki Valley, at Tanganyika. This is probably the species mimicked by Mylothris narcissus. 110. BELENOIS THYSA. Pieris thysa, Hopffer, Ber. Verh. Ak. Berl. 1855, p. 639. n. 1; Peters's Reise nach Mossamb., Zool. v. p. 349, pi. 21. figs. 7-10 (1862). Kibwezi. 111. BELENOIS SEVERINA. Papilio severina, Cramer, Pap. Exot. iv. pi. cccxxxviii. G, H (1782). Ngatana ; Barra near Merifano; Golbanti; Miviruni; steppes of Thika-Shika. The majority of the specimens were obtained at Golbanti. Ilia. BELENOIS INFIDA. (Plate XXXVII. figs. 1, 2.) Belenois infida, Butler, P. Z. S. 1888, p. 78. n. 111. Golbanti; Miviruni; Lake Losuguta ; shores of Lake Baringo; Njempo; Gopo lal Mavari; Guaso Narok; steppes N.W. of Longari; Thagana ; Thegu ; Ukikuya ; Kithungulu ; steppes of Thika-Shika; steppes between Athi and Thika; Athi plains near Chjanjavi; Machakos ; Maka ; Ndangi River ; Sabaki Valley. The enormous series of this species collected by Dr. Gregory proves, beyond dispute, that B. infida is only a Central and East African development of B. severina, to which every possible link exists; it is only by eliminating all the specimens having dark veins on the under surface from the series, that B. severina can be at all distinguished from this race. The black bar at the end of the cell, in this genus, proves to be a most unreliable character for the discrimination of species ; indeed I have very little doubt that Pieris ogygia of Trimen will prove, when a large series can be obtained, to be simply a development of Belenois thysa of Hopffer. Belenois zochalia (as will be shown presently) varies in the same way. |