542 MR. H. W. BATES ON THE LEPIDOPTERA 



with Tfliomiri ^TUl'ia in anothei" locality. A species of Bomhyeide Motli {Dioptls JEllana, 

 PI. LV. fig. 10) is also seen minyled Avitli the crowd in the forests of Fonte Boa. None of 

 these are found in any other part of the Amazon region, nor indeed in any other part of 

 America, to my knowledge, than the places inhabited by their counterparts. 



Found at Eg.i, in company with Stalachtis Buvalii and Ithomia Theoaoe, var. Lysiuo'i. I think there can be no 

 doubt it is of the same stock as Ithomeis aunintiaea, and has become modified in colours by natural selection, like 

 Lepfdlis Li/sliio'(\ to ada])t it to the |irolific and flourishing Stciliic/ifi.f Duvalii. 



3. IlllOMEIS IIki.ICONINA, 11. SJ). 



c? . Expanse 1" 2'". Fore iriny : ahove, black ; a large Iriangular spot on the basal part of the disk, traversed by 

 the median nervure and its first branch, a short crossbelt beyond the cell, traversed by the costal, uj)per and lower 

 radials, and ."rd median branch, white ; a narrow submaiginal cmved belt, beginning on the costa and ending near the 

 hind margin, reddish. Beneath, the same. 



Iliiid wing : above, black, with the disk (behind the cell), including the central jiart of the abdominal margin, 

 greyish white, semitransparent ; the nervures dusky : the broad' black bind border bus a narrow reddish-oiauge stripe 

 in its middle. Beneath, the same, exce])t that there is a white spot at the base. 



Body and anteiiiise black ; forehead silvery white ; abdomen beneath orange. 



Fomid at St. Paulo, flying in company with Ithomia. Itei-dina, which it resembles when on the wing. 



•1. Ithomeis mimica, n. sp. 



cJ 2 . Expanse 1" .'i'"-]" !)'". Fore ivin<j : atjove, dull black, with a reddish tinge on the margins near the base ; 

 a triangular spot traversed by the median nervure in the basal part of the disk, and an obscure spot between the 2nd 

 and 3rd median branches, dull greyish white ; a broad arched tawny-orange belt parallel to but distant from the outer 

 margin, beginning on the costa, and not reaching the hind angle. Beneath, the same, except that the tawny-orange 

 belt is yellower, and that there is a stripe of the same colour on the costal and hind margins, near the base. 



Ilind wing : aljorc, dull black ; the disk crossed behind the cell by an obscure, narrow, greyish stripe, traversed by 

 the dusky nervures ; a broad regular submarginal stripe along the hind margin and the abdominal edge orange-tawny. 

 Beneath, the same, except that there is a whitish streak at the base of the costa. 



Body and anteimai blaek ; forehead silvery white ; abdomen beneath orange. 



This species is found at St. Paulo and at Ega. It has a great resemblance in colours (though much smaller in size) 

 to Statiiehtis Euterpe, which inhabits in great numbers both localities. 



,'). IlllOMEIS Sati:i,i,itks, n. S|). 



c( . Expanse ]" S'". Fore iriiig : ainive, Ijlack ; a very large triangular spot, occupying the basal ])art of the disk, 

 extending nearly to the end of the cell and to the hind angle, and a macular crossbelt consisting of six spots, half- 

 way bt'tween the cell and outer margin, greyisli white, slightly transparent; a submarginal belt, beginning on the costa 

 and extending nearly to the hind margin, reddisli orange. Beneath, the same. 



////((/ n'inij : uliiioe, with the whole disk grey, semitransparent ; the costal edge blaek ; a broad submarginal band, 

 beginning on llie costa and miming parallel with the margin to the abdominal edge, reddish orange, bordered on each 

 side with blaek. Beneath, the same, except that the red submarginal belt runs also along the costal margin to the 

 base of the wing, ubieli has also on its black costal edge a whitish stripe. 



Body and ,ui(eiiii:e black ; forehead silvery white ; abil i^n beiii'Uth orange. 



This s|ieeies lla^ ilie liglil-eiili)iired portions of ihe wings much greater in extent, and much clearer iu hue, than any 

 of its kinilred. it l> found in the Inrests of the Ciipari', a lirani'h of the TajiajdS, in company with Ithomia Flora. It 

 is in .■leeordanee wilh the ii>t iif the faels of ada|itive reM'mblaiuvs hiTc recorded, thai this Ithomeis, the I.eptalis of 

 the loealily ( //. Theonoe), and the Ithnmia wliieb they both mimic ( /. Flora), are all much more transjiareiit and 

 cleari-r in colour tlian their allied forms of the I'pper Amazons. 



1 believe that all the five species of Ithomeis liere described belong to (me stock. It is remaikable that the colours 

 (jf the anteiin.-e and body are iilentical in all live. This seems to show that the modifications have jilayed only 

 upon till' colours of the wings, and this strictly in aee(n-dance with the Ithomia- or !<talaehles which abound in the 

 lociillty they respectively inhabit. Thev are all excessively rare. I found but one specimen each of four of the 

 s])eeics, during eleven years' rcseardi. 



