578 DE. A. G. BUTLER OX LEPIDOPTEEA [June 19, 



107. Catopsilia floeella. 



Papnliofiorella, Fabricius, Syst. Ent. p. 479. n. 159 (1775). 

 6 $ ? Xdoro, steppes at base of Kenya, 7000 feet ; Xdangi 

 River. 



108. Gltjtophrissa coxtracta. 



Glutophrissa contractu, Butler, P. Z. S. 1888, p. 75. n. 102. 



<3 , Xgatana ; § , Lake Losuguta. 



109. Phrissura LABEL 



Myloihris lusti, Grose-Smith, Ann. & Mag. Xat. Hist. ser. 6, 

 vol. in. p. 124 (1889). 



Belenois lasti, Smith & Kirby, Rhop. Exot. h. pi. Belen. ii. 

 figs. 1-3 (1892). 



<3 $ , Sabaki Valley, at Tanganyika. 



This is probably the species mimicked by Myloihris narcissus. 



110. Bele>"ois thysa. 



Pieris thysa, Hopffer, Ber. Yerh. Ak. Berl. 1855, p. 639. n. 1 ; 

 Peters's Reise nach Mossamb., Zool. v. p. 349, pi. 21. figs. 7-10 

 (1862). 



Kibwezi. 



111. Belexois seveelna. 



PaptUo 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. 



Ill a. Belexois iximA. (Plate XXXYII. 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 Mayan ; Guaso Xarok ; steppes N.W. of 

 Longari ; Thagana ; Thegu ; UMkuya ; Kithungulu ; steppes of 

 Thika-Shika; steppes between Athi and Thika ; Athi plains near 

 Chjanjavi : Machakos ; Maka ; Xdangi 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. >■< ve) ina 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. 



