species of South African butterflies. 137 
discal spots much larger than in Thyra; no basal or subbasal black 
spot below median nervure. Hind wing: The discal irregular 
dentated whitish streak of Thyra represented by distinctly separate 
spots of different sizes and shapes; the submarginal dentated 
streak is submacular. 
?. Like J; in one of the two examples the pale spots of the 
under side are much less distinct. 
The reduction of the dark border in this form is carried 
to the extreme short of its entire disappearance. This 
striking feature, in combination with the other differences 
above noted, may warrant its separation from Thyra ; 
but it must be noted that there is evidence of linking 
gradations to the latter widely-spread and variable 
species. 
Of the four specimens known to me, three are from 
Damaraland, vid.: a ¢ and @ collected as long ago as 
1862 by the late Mr. C. J. Andersson, anda ¢ taken in 
the same year by Mr. J. A. Bell. The fourth is a small 
3, with the apical border in the fore wings rather 
wider, and the under side spots rather brighter, which 
occurred in a collection made in Khama’s Country and 
Mashunaland, acquired by Mr. C. N. Barker in 1891. 
A-near approach to the latter example is made by a 3 
taken (August, 1890) at Port Nolloth, in Little Namaqua- 
land, by Mr. R. M. Lightfoot, in which the dark border 
is quite as linear in the hind wings, and not very much 
wider in the fore wings; but the upper side ground 
colour is redder, and on the under side the basal and 
subbasal black spots characteristic of Thyra are present 
in a reduced form. 
Another grade in the direction of typical Thyra is 
presented by two males from D’Urban, Natal, received 
in 1889 from Mr. A. D. Millar, in which the dark border 
is very much narrowed, but retains the characteristic 
strong exterior costal development in the fore wings, and 
to a less extent in the hind wings. 
Hab. Port Nolloth (R. M. Lightfoot), Cape Colony ; 
Damaraland (C. A. Bell and the late C. J. Andersson) ; 
between Khama’s Country and Mashunaland (C. N. 
Barker). 
TRANS. ENT. SOC, LOND, 1893.—-PART II, (JUNE, ! L 
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