1876.] MR. A. G. BUTLER ON THE GENUS TERACOLUS. 151 



blackish scales; the black veins only crossing its outer area; the in- 

 ternal black streak replaced by a tapering dark grey streak, which 

 disappears just beyond the middle of the internal nervure ; marginal 

 spots clearly defined and well separated ; secondaries below with tbe 

 veins white from the base to the middle of the wing and thence grey 

 to the margin. Expanse of wings 2 inches 1 line. 



§. Pale testaceous, the apical spots of primaries stramineous; 

 brown parts of the wing as in T. gavisa § , excepting that the sub- 

 apical band of primaries bounding the apical spots is not irregular 

 externally, and is of more than twice the width ; the spot at end of 

 cell is lost in the brown basal patch, and the spots towards anal angle 

 of secondaries are almost lost in the broad marginal border : below 

 the wings are testaceous, the base and apex of primaries and the 

 secondaries with a yellow tint and clouded with pale orange ; the veins 

 of external third of primaries are dusky, but on secondaries they are 

 uniform with the ground-colour ; the subapical, blackish, oblique 

 streak of primaries is placed much nearer to the apex. Expanse of 

 wings 1 inch 1 1 lines. 



S. Africa (E. C. Buxton). Type, B.M. 



I believe the above to be sexes ; they have much in common. 



82. Teracolus omphaloides, 11. sp. 



Anthocharis achine, Boisduval (nee Cramer), Sp. Gen. Lep. i. 

 p. 574. n. 21 (1836). 



This species differs from T. nmphale in the narrower, black internal 

 stripe of primaries, the obsolete character or absence of the male 

 transverse stripe in the secondaries, and the red tint of the under 

 surface of the latter wings. Expanse of wings, <S 1 inch 4-10 lines, 

 $ 1 inch 5-10 lines. 



S 2 , S. Africa (11 examples, E. C. Buxton) ; <$ , Zoolu {Sir A. 

 Smith). Type, B.M. 



If it were not for the number of examples which we now possess 

 of this form, I should have been disposed to look upon it as a sport 

 of T. omphale. 



83. Teracolus omphale. 



Pieris omphale, Godart, Enc. Meth. ix. p. 122. n. 12 (1819). 



Anthochaais omphale, Boisduval, Sp. Gen. Lep. i. p. 574. n. 22 

 (1836). 



Oallosune omphale, Kirby, Syn. Cat. p. 502. n. 23 (1871). 



Anthocharis eurygonel, Lucas, Rev. Zool. p. 341 (1852). 



Callosune euryyone, Kirby, Syn. Cat. p. 502. n. 19 (1871). 



S $ , N.E. of Natal (13 examples, E. C. Buxton). B.M. 



The undersurface of the secondaries in this species is of a greenish 

 white colour, with the usual angular streak and discoidal spot. 



84. Teracolus exole. 



3 . Anthocharis exole (part), Reiche, Ferr. Gal. Voy. Abyss. Ent. 

 p. 460, pi. 31. fig. 4 (1849). 



Callosune exole, Kirby, Syn. Cat. p. 503. n. 27 (1871). 



