18/6.] mr. a. g. butler on the genus teracolus. 149 



73. Teracolus zera. 



Anthocharis zera, Lucas, Rev. Zool. p. 423 (1852). 

 Callosune zera, Kirby, Syn. Cat. p. 502. n. 20 (18/1). 

 Abyssinia. 



Closely allied to T. antevippe, but the orange apical patch with a 

 black internal margin. 



74. Teracolus antevippe. 



Anthocharis antevippe, Boisduval, Sp. Gen. Lep. i. p. 572. n. 18, 

 pi. 18. fig. 3(1836). 



6 $ > White Nile (Petherick), d, Senegal. B.M. 



75. Teracolus helle. 



<S . Nearly allied to T. antevippe, but the base of primaries broadly 

 grey ; outer black border of primaries twice the width ; costa, ex- 

 cepting at base, distinctly black ; orange patch of primaries below 

 more restricted : terminations of veins in secondaries less distinctly 

 black. Expanse of wing 1 inch 11 lines. 



2 . Primaries rounded at apex ; basal area of wings considerably 

 darker than in T. antevippe, marginal spots of secondaries larger : 

 primaries below with the transverse grey subapical streak almost ob- 

 solete ; secondaries considerably whiter. Expanse of wings 1 inch 8 

 lines. 



White Nile (Petherick). Type, B.M. 



Possibly a variety of T. antevippe, but quite distinct in appearance. 

 Until all these species have been bred, it will be necessary to regard 

 all the dissimilar and apparently constant forms as different species. 



76. Teracolus hyperides. 



Allied to T. antevippe ; the male, however, differs in the narrow, 

 squamose, black, internal edging to the orange-patch, and in the pre- 

 sence of a grey internal streak in primaries ; the nervures of secon- 

 daries on underside not noticeably black-tipped ; the orange of costa 

 confined to the base, and the spot at end of cell smaller. The female 

 also has the apical area of primaries distinctly orange, with a broad 

 brown patch covering the base of discoidal cell and extending to 

 beyond second third of internal area ; the abdominal area of second- 

 aries brownish, the angulated band more distinct : wings below alto- 

 gether paler ; primaries with a greyish internal streak, terminating 

 in a large black spot ; secondaries yellow instead of orange-tinted ; 

 the veins not black, angulated band less distinct. Expanse of wings 

 J 1 inch 9 lines, $ 1 inch 8 lines. 

 N.E. of Natal (3 specimens, E. C. Buxton). Type, B.M. 



77. Teracolus achine. 



5 . Papilio achine, Cramer,Pap. Exot. iv. pi. 338. figs. E, F (1782). 

 Pieris achinel Godart, Enc. Me'th. ix. p. 122. n. 14 (1819). 

 S. Africa (4 examples, E. C. Buxton). B.M. 



The male differs from the T. achine of Hiibner in having the veins 



