360 Mr. R. Trimen's descriptions of new 



near base, discoidal cell and a small space beyond, and 

 a widish hind-marginal border, very pale fulvous ; five 

 small black spots near base, of which two are in cell ; 

 two parallel discal rows of small black spots, seven in 

 each row; 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 wing : White spots inclining to creamy, all 

 smaller than in male (especially the 7th, while the 8th 

 is wanting or exceedingly minute) ; hind-marginal spots 

 distinct, pale fulvous-ochreous, seven in number. Hind 

 wing : Disco-cellular spot large, pale fulvous-ochreous ; 

 close to hind margin a row of seven spots of the same 

 colour, not extending below submedian nervure. Cilia 

 creamy white, with wider fuscous interruptions (in hind 

 wing only at extremities of median nervules). Under 

 side : As in male, but the fulvous markings much 

 brighter. Hind wing : 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. 



In size this Pyrgus is nearer to P. Mohozutza, Wallengr., 

 but in pattern to P. Ckaca, Trim. From the former 

 both sexes constantly differ in (1) the continuous cha- 

 racter of the discal row of white spots, due to the 

 presence of two spots between the costal three and those 

 below median nervure. The male is further separable 

 by (2) the purer white of the discal spots and the cilia, 

 and (3) by the obsolete condition of the hind-marginal 

 ochreous spots. On the under side both sexes present in 

 the hind wing (4) a regular inner discal row of seven 

 black spots instead of the three or four widely-separated 

 and irregularly-placed spots in Mohozutza ; (5) paler 

 (and on costa and submedian nervure much reduced) 

 fulvous markings ; and (6) a whitish instead of fuscous 

 inner-marginal fold. Apart from its very much smaller 

 size, Tucusa, in both sexes, is very like Cliaca on the 

 upper side ; but on the under side it wants entirely the 

 broad transverse median fulvous band and fulvous base, 

 separated by a creamy black-edged band, so conspicuous 

 in Chaca. 



Mr. H. Barber first sent me examples of this species, 

 which he took in the Transvaal country in 1873. Several 



