OF THE AMAZON VALLEY. 
547 
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that it wants, beneath, the greyish-white marginal stripe at the apex ; the upper disco- 
cellular is rather longer. 
Hind wing with the costal edge much more dilated before the apex than in /. Oroliua, 
and the apex itself in consequence is more broadly and transversely truncated ; the two 
radials are much closer together, the upper partly atrophied, and the lower not visible on 
the disk ; the third median branch is directed more towards the apex of the wing ; the 
colours of the hind wing are the same as in I. Orolina, except that the dusky border is 
deeper in colour, more distinctly limited, and has an orange stripe running through the 
middle, which is most distinct towards the apex. Beneath, it wants the short grey-white 
macular marginal stripe at the apex. 
Body and antennae black ; head and thorax with a few faint white markings. The 
elongate cup-like depression between the costal and subcostal nervures of the hind wing 
in the 6 , connected with the pencil of hairs, is much larger in this form than in I. Orolina. 
This is the most abundant form of the species, and should be properly taken as the type, 
I. Orolma being subordinated with the other forms as its varieties. I follow the usual 
practice in taking the first-described form as the type. 
Var. 4. I. Aureliana. 
In shape and markings this form comes between i". Sarepta (Hewits. Exot. Butt. Itho- 
mia t fig. 3.) and I. Chrysodonia. 6 . Expanse 2" 2'". Fore icing much elongated, upper 
disco-cellular wanting : above, the subapical orange belt, as in I. Sarepta, is broadly 
margined along its entire inner edge with black ; but it is much narrower, being broadest 
near the costa, narrowing gradually to the 3rd median branch, thence very narrow to th< 
hind angle ; it thus leaves between the upper radial and 1st median branch a series of four 
successively larger whitish transparent spots : the dusky belt across the apex of the cell 
is large ; the transparent parts are whitish, and all the nervures are broadly bordered 
with blackish : the black apical margin has a row of four obscure whitish spots. Beneath, 
the same, except that the nervures around the end of the cell are orange-coloured, and 
the marginal spots near the apex are large and of a clear grey white. 
Hind wing oblong, costal border broad, apex rounded; outer margin with a broad 
dusky border in the middle of which runs a broad orange stripe; the hyaline disk is 
whitish, the nervures dusky. Beneath, the oblong pouch near the costa is much larger 
than in I. Chrysodonia ; colours as above, except that there is near the apex a marginal 
row of four elongate greyish-white spots. „.,,.. , ™ , • i 
Body and antenna black ; head and thorax with a few famt white marks. The hind- 
wing lower radial (<J) is not visible on the disk, and the upper radial is partially aborted. 
Taken, in company with the four preceding, at St. Paulo. 
19. Ithomia Sarepta, Hewitson. 
Ithomia Sarepta, Hewits. Exot. Butt. Ithomia, fig. 3. 
-n i , -r. ^ a T?4n TSTpoto bv mvself ; and at Guia, several hundred mile; 
Pound at Barra, on the Kio JN egi o, Dy my scu , a , 
further up the same river, by Mr. Wallace. I did not find it at St. Paulo 
I treat this as an independent form, because it appears to have separated itself com 
