South- African Lepidoptera-Rhopalocera. 359 



(7) wants the disco-cellular terminal spot presented by 

 Agoye female in both wings ; (8) the under side is duller 

 in tint, and wants both the disco-cellular spots and the 

 tinge of pale yellow at the base of the fore wing. 



Colonel Bowker, after whom I have named this butter- 

 fly, took a solitary male of it in Basuto-land ; and in 

 1871 sent me a second example of the same sex from 

 Hope Town, on the Orange River. Later in that year he 

 forwarded a male and four females from the Vaal River. 

 On the 6th September, 1872, I captured a male at Kol- 

 berg, in Griqualand West. The only other specimen I 

 have seen was a male, received in 1879, taken by Mrs. 

 Barber on the Vaal River. 



Hab. Cape Colony (Northern and North-Eastern 



Districts). 



HESPERHLE. 



Pyrgus, Hilbn. 



Pyrgus Tucusa, n. s. 



Allied to P. Mohozutza, Wallengr., and P. Cham, Trim. 



Exp. al. 1 in. — 1 in. 3 lin. 



$ . Fuscous, with semi-transparent white spots. Fore 

 wing : From base to before middle, along costa, median 

 nervure, and inner margin, some yellowish white irrora- 

 tion ; at extremity of discoidal cell two elongate spots 

 one above the other ; a discal continuous row of nine 

 spots, strongly curved outwardly in its upper portion, 

 but thence sharply deflected inwardly to submedian 

 nervure a little beyond middle ; of this row the 7th is 

 the largest spot, and the 8th the smallest ; close to upper 

 part of hind margin a row of fine, almost obsolete, dull 

 fulvous-ochreous spots. Hind wing : Median and sub- 

 median nervures clothed with dull yellowish white scales 

 and hairs ; at extremity of cell an ill-defined whitish 

 spot. Cilia white, with narrow fuscous nervular inter- 

 ruptions, — those in hind wing almost obsolete. Under 

 side : Dull creamy white, varied with very pale fulvous, 

 and with small black spots. Fore wing : White 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. Hind wing : A thin costal edging 



TRANS. ENT. SOC. 1883. — PART IV. (NOV.) 2 E 



