236 Mr. R. Trimen on some new or imperfedly- 



January, and 2nd March, 1901, yielded no examples. The 

 habits of the butterfly were more like those of Z. thyshe than 

 those of Z. zeuxo (wliich keeps almost exclusively about a 

 shrubby Senecio) ; its flight being extremely rapid and 

 difficult to follow, while it settled on various bushes but 

 never on the ground. 



Mr. Feltham on first meeting with this Zeritis was 

 inclined to think it might be a seasonal form of Z. zeuxo, or 

 a " Flats " variety of Z. clirysaor, but further acquaintance 

 rightly convinced him of its distinctness, alike in char- 

 acters and habits, from both those allied species ; and 

 he is to be congratulated on detecting a new form pre- 

 senting affinities of so much interest in so well-known 

 and comparatively well-worked a district as the Cape 

 Peninsula. It is clear that Z. Feltliami is no casual 

 visitor but a settled resident; and I should feel more 

 surprise than I do at its having escaped my many years' 

 researches in its hahitat, but for the facts that in the district 

 concerned many insects and plants are confined to ex- 

 tremely limited areas, and that they are often most 

 remarkably intermittent in their appearance or flowering 

 respectively.* 



Zeritis thysbe (Linn.). (Plate XIX, figs. 3, 3a.) 



Pajnlio thyshe, Linn., Mus. Lud. Ul. Reg., p. 330, n. 148 



(1764). 

 Zeritis thyshe, " Variety or Sport," ^, Trim., Rhop. Afr. 



Aust., ii, p. 344 (1866); Butler, Proc. Zool. Soc, 



Lond., 1868, p. 223, pi. xvii, f. 5; "Aberration, $," 



Trim., S.-Afr. Butt., ii, p. 182 (1887). 

 Zeritis thyshe, "Distinct dark variety," ^ and ^, Feltham, 



Proc. Ent. Soc. Lond., 1900, p. xxi. 



For many years only three examples, all $$, were known 

 to me of the very beautiful variation of Z. thyshe in which 



* Mr. Feltham was so fortunate as to make a second addition to the 

 limited number of butterflies inhabiting the Cape Peninsula, taking 

 in 1900, at the same locality, a number of examples of a small 

 Hesperide, Kedestes nivcostriga (Trim.), previously known in the 

 Cape Colony only from the far-distant north-eastern district about 

 Dordrecht. A specimen received from the captor is dated " Muizen- 

 berg Vlei, 1st December, 1902," and it agrees closely with the variety 

 prevalent at Dordrecht and in Basutoland, which is smaller than the 

 Kaffrarian and Natalian type-form and has the sub-vitreous spots of 

 the fore-wing much reduced in size and sometimes obsolete. 



