of the Genus Teracolus, Swans. 501 
80. Teracolus preclarus. 
Teracolus preclarus, Butler, P. Z. 8. 1885, p. 769, pl. xlvii. fig. 7. 
Somaliland. 
This beautiful species is evidently a link between 7’. pholoe 
and J. zoe, although the latter is in many respects more 
nearly related to the 7’, halimede group. It is probable that 
other species of the J’. celimene type still remain to be dis- 
covered. 1’. preclarus appears to be a dry-season form. 
81. Teracolus zoe. 
Anthocharis zoe, Grandidier, Rey. et Mag. de Zool. p. 272 (1867) ; 
Mabille, in Grand, Madag. pl. xl. figs. 3-5. 
Madagascar. 
In the ash-grey base and black veins to the primaries and 
orange costal stripe to the secondaries this species approaches 
T. leo. In other respects it is nearer to 7. preclarus. 
82. Teracolus leo. 
Anthocharis leo, Butler, Ann, & Mag. Nat. Hist. ser. 3, vol, xvi. p. 397 
(1865), 
Appears to be confined to North-eastern Africa, from the 
White Nile to Somaliland, and southward as far as Kilima- 
njaro. 
It is readily distinguishable from 7’. halimede by the orange 
patch on the primaries being restricted to below the first 
median branch and the outer dusky border only represented, 
even in the wet-season examples, by spots. The type of the 
species 1s, in wy opinion, an intermediate form between the 
wet and dry phases. I have not yet seen what I should 
regard as an undoubted dry-season form, unless it be repre- 
sented by a small example from Mr. Druce’s collection (G. & 
S. coll.) in which the orange is carried a little above the first 
median branch, the base somewhat glistening and white, 
and the apical markings weak as in typical 7. leo, This 
specimen is without locality. 
83. Teracolus halimede. 
Pontia halimede, Klug, Symb. Phys., Ins. pl. vii. figs. 12-15 (1829), 
Pontia acaste, id. 1. e. figs. 16, 17 (1829). 
Pieris polycaste, Boisduyal, Sp. Gén. Lép. i. p. 525 (1836). 
Teracolus celestis, Swinhoe, P. Z, 8, 1884, p. 455, pl. xxxix. figs, 1, 2 
(1884). 
Confined to Arabia. 
