r IK] UN. 4-:. 23 



244. (■">.) Terias Butleri, sp. nov. 



Exp. ciL, Q) I iu. 7 lin. ; ($) i in. 9 lin. 



^ Sulphur-yelloiv ; fore-wing with rather broad, inivardly deeply 

 excavated black border ; hind-wing ivith a very narroiv, inivardly slightly 

 suffused border. Fore-iuing : costa irrorated finely with black for about 

 one-third from base, thence rather strongly black- edged to first subcostal 

 ner\n.ile, where the apical border begins to widen ; upper part of border 

 shaped as iu jEthiopica as far as third median nervule, but thence much 

 broader, the lower inward projection between first median nervule and 

 posterior angle being at least twice as broad. Hind-wing : border 

 extending from first subcostal to first submedian nervnre, attenuated to 

 each extremity, and crossed by yellow inter-nervular folds ; at extremity 

 of submedian nervure, and of fold between it and first median nervule, 

 a minute black spot. Under side. — Almost the same tint of yellow ; 

 usual markings very indistinct ; no trace in fore-wing of any sid)apical 

 patch or streak. Fore-wing : disco-cellular dot and streak faint and 

 minute, and terminal markings very indistinct, small, and narrow. 

 Hind-iving : small sub-basal annulets less indistinct ; terminal disco- 

 cellular mark rather narrow, interrupted on fold ; discal irregular streak 

 faint or nearly obsolete. 



$ Considerably paler, sometimes inclining to whitish-yellow, with 

 broader didler borders. Fore-iving : a faint sj^arse minute fuscous irro- 

 ration from base (in one example not so sparse, and extending over 

 basal third of wing) ; border broader throughout, but more markedly so 

 at inferior inward projection. Hind-wing : border variable in width, but 

 always narrow, more suffused inwardly ; in the example above mentioned 

 a very sparse fuscous irroration for a little distance from base, chiefly 

 in discoidal cell. Under side. — As in $, but much paler, and markings 

 even more indistinct, almost obliterated ; in one example (not that above 

 mentioned) a faint trace in fore-wing of a ferruginous subapical patch. 



Unwilling as I am to add another to the numerous species-names 

 of this bewildering genus, I see no help for it in the case of this 

 South-African form, near as it is to T. Hccabc (linn.). There is little 

 else to depend on in this group of Terias except the form of the fore- 

 wing border, and this in T. Butleri is intermediate between that ex- 

 hibited by the West- African T. Zeonis, Butl, and the pattern so strongly 

 developed in T. Hccabe. Zeonis itself is allied to ^thiopica, mihi, in 

 its upper-side markings, but their rather greater development, com- 

 bined with the feebly marked under side, link it to Butleri. The latter 

 is readily distinguished from its South-African allies by its deeply 

 excavated broad border in the fore-wing and distinct though narrow 

 one in the hind-wing, as well as by its exceedingly indistinct marking 

 on the under side. 



It is with great pleasure that I name this butterfly after my friend 

 Mr. Arthur G. Butler, of the British Museum, whose praiseworthy 



