23 
244. (5.) Terias Butleri, sp. nov. 
Exp. al, (?) I in. 7 lin. ; (g) I in. 9 lin. 
J Sulpliur-yellow ; fore-iving with rather broad, inwardly deeply 
excavated black border ; hind-iving luith a very narrow, inwardly slightly 
suffused border. Fore-iving : costa irrorated finely with black for about 
one-third from base, thence rather strongly black- edged to first subcostal 
neryule, where the apical border begins to widen ; upper part of border 
shaped as in ^thiopica 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-iving : border 
extending from first subcostal to first submedian nerviire, 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 subapical 
patch or streak. Fore-iving : disco-cellular dot and streak faint and 
minute, and terminal markings very indistinct, small, and narrow. 
Hind-wing : 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 ivhitish-yelloiu, with 
broader dtdler borders. Fore-iving : a faint sparse 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. Hecabe (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. Leonis, Butl., and the pattern so strongly 
developed in T. Hecabe. Leonis itself is allied to jFthiopica, 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 
