298 SOUin-AFEICAN BUTTERFLIES. 



hlach spots. Forc-v:ing : -^vhite spots as on upper side, and edged with 

 fuscous; inner-marginal area pale fuscous ; hind-marginal border creamy, 

 faintly tinged with fulvous, becoming macular towards posterior angle ; 

 along hind-marginal edge a row of small inter-nervular black spots, 

 Ilind-u-ing : a thin costal edging near base, discoidal cell, and a small 

 space beyond, and a widish hind-marginal border, very pale fulvous ; 

 near base two small black spots above discoidal cell, two in cell (with 

 a small space of the ground-colour between them), and one below cell ; 

 two parallel discal rows of small black spots (seven in each row), parallel 

 at a little distance apart ; inner-marginal fold tinged with fuscous at 

 its broad anal-angular extremity ; hind-margin thinly edged with 

 fuscous, interrupted (like the fulvous border) by nervules of the ground- 

 colour. 



$ Fore-ioiiig : wJiitc sjpots inclining to creamy, all smaller than in $ 

 (esjjcciallg the seventh, while the eighth is wanting or exceedingly minute); 

 hind-marginal spots distinct, j;afc fidvotcs-ochrcous, seven in numher. 

 Hind-wing : disco-cellular spot large, pale ftdvous-ochreous ; close to hind- 

 margin a roio of seven spots of the same colour, not extending below 

 submedian nervure. Cilia creamy white, with wider fuscous interrup- 

 tions, of which in hind-wing there are only three, at the extremities 

 of median nervules. Under side. — As in $, hut the fulvous marlcings 

 much brighter. Hind-u-ing : two additional fulvous marks immediately 

 before inner discal row of black spots, viz., one between costal and 

 subcostal, the other between median and submedian nervures. 



This Pyrgus closely resembles both P. Mohozutza (Wallengr.) and 

 P. Chaca, Trim. ; in size it is nearer to the former, but in pattern 

 to the latter. The continuous character of the discal row of white 

 spots, due to the constant presence of two spots between the costal three 

 and those below median nervure, distinguishes it in both sexes from 

 Mohozutza. The $ is further separable by the purer white of the 

 discal spots and the cilia, and by the obsolete condition of the hind- 

 marginal ochreous spots, which in Mohozutza are well marked. On 

 the under side both sexes present in the hind-wing a regular inner 

 discal row of seven black spots instead of the three or four widely- 

 separated and irregularly-placed spots in Mohozutza ; paler (and on 

 costa and submedian nervure much reduced) fulvous markings, and a 

 whitish instead of fuscous inner-marginal fold. Apart from its very 

 much smaller size, Tucusa in both sexes is very like Chaca on 

 the upper side, but on the under side it wholly wants in the hind- 

 wings the broad transverse median fulvous band and fulvous base, 

 separated by a creamy-white black-edged band, so conspicuous in 

 Chaca. 



An aberrant $ sent from the Transvaal in 1873 by Mr. II. Barber has the 

 fore-wings longer than usual, with the discal spots all smaller and tinged with 

 yellow-ochreous, but three ^ s accompanying that specimen are normal. 



