IIESPERID.E. 305 



spots. Forc-icing : spot at extremity of cell dividud by disco-cellular 

 fold ; first three spots of discal row minute but distinct, forming a 

 thin outward-curring costal ray about midway between disco-cellular 

 spot and apex ; other spots of discal row larger, forming a strongly 

 inward-curving row between third median uervule and submedian 

 uervure, — the middle spot of these three being the largest, subquadrate, 

 and immediately below disco-cellular spot. Hind-wing : spotless. Cilice 

 broad, dusky-whitish. Under side. — Hind-ivivg and costa and ajncal 

 area ' of fore-ioing pale oclircous-hrown, with a reddish tinge. Fore-wing : 

 spots as on upper side, except that those in costal part of discal row 

 are usually less distinct and sometimes obsolete; a hind-marginal 

 ivldtish clond over loiver part of ochreous-brown of apical area. Hind- 

 luing : a very conspicuous, rather broad, white longitudinal stripe, com- 

 mencing at a little distance from base and running along disco-cellular 

 fold to hind-margin ; a duller, much less conspicuous, wider whitish 

 stripe along inner-marginal edge ; space of inner-marginal fold brownish 

 gi*ey. 



$ Paler, duller ; hind-wing not darker than fore-wing ; spots of 

 fore-wing rather larger, the three lower ones of discal row more widely 

 separated from each other. Under side. — Hind-wing : grey of inner- 

 marginal fold paler ; inner- marginal white stripe very narrow and ill- 

 defined ; on disc the minute traces of a row of whitish sj)ots. 



From T. niveostriga, Trim., this species may at once be recognised 

 by (i.) the conspicuous longitudinal central white stripe on the under 

 side of the hind-wing. Other distinctions are (2.) three spots instead 

 of two in costal part of discal row ; and on under side (3.) the nervures 

 not paler than the ground-colour; (4.) the whitish cloud on hind- 

 margin of fore- wing; and (5.) the dull and ill-developed state of the 

 inner-marginal white stripe of the hind-wing, which in niveostriga is 

 shining pure white. 



It gave me much pleasure to name this new butterfly in honour of Pastor 

 H. D. J. Wallengreu, the distinguished Swedish lepidopterist, whose good 

 fortune it was to be the first to make known to science a large number of the 

 South-African Rhopalocera. 



Like so many other novelties among the Hesperidce, this curious Thymelicus 

 rewarded the unremitting researches of Colonel Bowker, who discovered it in 

 Zululand in 1880. Later in the same year he sent an individual taken at the 

 Biggarsberg in Natal. 



A $ example sent by Mr. A. D. Millar in June 1888 was taken by him 

 among grass along a brook near the Halfway House at Botha's Hill, Natal. 



Localities of Thymelicus Wallengrenii. 



A. South Africa. 



E. Natal. 



h. Upper Districts. — Estcourt (/. M. Hutchinson). Biggarsberg (/ 

 H. Bowl-er). Botha's Hill {A. D. Millar). 



F. Zululand. — Napoleon A^alley (/. //. Boioker). 



VOL. III. XJ 



