1888.] FROM EftUATORIAL AFRICA. 79 



two, or no subapical spots of the ground-colour, when three are 

 present they form an oblique series ; secondaries sulphur- or chrome- 

 yellow, the' external black border broad, sometimes like that of 

 B. severina, excepting that it is connected with a discocellular 

 triangular spot hy black veins (median and radial), but more 

 frequently occupying half the wing, so as entirely to obliterate 

 the subapical costal spots ; fringe spotted with white. Below 

 always yellower than in B. severina, the primaries with broad black 

 oblique bar at the end of the cell, either connected by black veins 

 or confluent vdth a more or less broad external border as above, this 

 border, however, never stops short at first median branch as in 

 B. severina, but is continued to the inner margin ; the secondaries 

 below always have a wider external border than in B. severina, 

 frequently almost extending to the cell, and the veins are all widely 

 bordered with brown. Expanse of wings 50-51 millim. 



cJ . Wadelai, 16th January ; $ . 28th, 29th and 31st March ; 8th 

 and 9th April, 1887. 



Of this well-m.irked species thirteen examples were collected ; 

 unfortunately, twelve of these are females, and therefore it is impos- 

 sible to say whether the extraordinary variability in the width of 

 the black border extends to the male sex ; of the females no two 

 specimens are quite alike. 



This is what I understand by a variable species ; many Lepi- 

 dopteri^ts confound the idea of a variety or sport with that of a 

 fixed local form (wliich I regard as the only species in Lepidoptera), 

 and this leads them into such a perplexed condition of mind that 

 they have some difficulty in deciding as to whether a new form shall 

 be "called a new species or a variety. In Mr. Semper's recently 

 published ' Reisen im Archipel der Philippinen,' 2nd part, p. &4, 

 the difficulty is thus met — " 1U5 a. var. Euripus lucasioides, n. sp." 



112. BeLENOIS AGRIPPINA. 



Pieris agrippina, Felder, Reise der Nov., Lep. ii. p. 173. n. 159 

 (1865). 



S $. AVadelai, 13th and 16th January; 19th and 29th March; 

 8th April. 



I doubt very much whether the distinction between this species 

 and B. lordaca can be maintained, the difference (chiefly in size) 

 appears to be more and more unsatisfactory as additional specimens 

 are received. 



Papilionin^. 



113. PaPILIO POL.ICENES. 



Papilio policenes, Cramer, Pap. Exot. i. pi. 37- A, B (1776). 

 Kangasi, 20th August, 1883 ; Monbuttu in July or August. 

 Only three imperfect specimens were obtained. 



114. Papilio antheus. 



Papilio antheus, Cramer, Pap. Exot. iii. pi. 234. B, C (1782). 

 Stazione Gadda, 19th January, 1884. 



