546 MR. H. W. BATES ON THE HELICONIDE LEPIDOPTERA 



to have reached an advanced stage of segregation from the parental stock. They all fly 

 together in the same places, and their differences are so slight and graduated that they 

 cannot fittingly l)e treated as independent forms or species. They are as follows : — 



Var. 1. I. Anreola. 



2 . Size and general colours of /. Orull/zo. Fore wiiuj : aborc, with a complete black 

 border; the apical part has a large, broad, ol^long, opake orange spot occupying more 

 than one-third of the wing ; posteriorly the spot reaches only the 2nd median branch, but 

 covers entii-ely the 3rd ; interiorly it is bordered by the short dusky belt running across 

 the end of the cell : rest of the wing clear, transparent. Beneath, the same, except that 

 there are three greyish-white spots at the apex. 



Hind ioinf/ clear, transparent, the nervures edged with Ijlackish ; costal and posterior 

 margins widely bordered with blackish, the latter having a rufous line in the centre. 

 Beueat/i,th.(ixnaY<^'n\s are orange-coloured, bordered with blackish, the margin without spots. 



Body and antenna- black ; thorax with a few faint whitish marks. 



Pound in company witli /. Orolind, Avhose 2 usually does not differ in markings from 

 the cJ . It is a mere variety of the 2 , but necessary to distinguish, as it connects together 

 the extreme modifications of the species. 



Var. 2. /. Oneid'ui. 



?. In size, shape, and markings, similar to /. Oroliua. Fore icing : ahore, with a 

 complete narrow dusky border ; the apical part has an arcuated orange lielt, whicli is in- 

 distinctly limited on the inner side, but reaches nearly the hind angle, and leaves both the 

 2nd and ord median l)ranc]ies visible for the greater part of their lengtli ; rest of the wing 

 transparent : the cell in middle })art is broadly fuliginous ; there is a thick dusky belt 

 across the end of the cell, and tlu* median branches are edged with l)lackish ; a spot over 

 the end of the cell and two spots Ijetween the median branches milky white. Beneath, 

 the same, except that the apical margin of the wing has a greyish-white stripe. 



Hind ioi)ifi broadly margined with Idackish, the hind 1)order having in the middle a 

 narrow orangc^coloured line ; the whole of the discal portion, witli its nervures, milky 

 white. Beneath, the same, except that the margins liave a broadish orange line, widely 

 margined with dusky, and the apex has a short greyish-white stripe. 



Body and anti'iina' lilack ; head aiul tliorax witli a few faint whitisli marks. 



This variety of the 2 is interesting, as furuisliini;- proof of the variability in colour, from 

 smok}' hyaline to milky white, of the discal j)ortions of the wings and their nervures. 



We can understand from this liow ItJajmia Ih'rdina, and its \\\\\\^Xi^x LepUdis Leitconoe, 

 may have originated. 



Var. 3. /. ChriiHodonia. (I'l. LVI. lig. Za.) 



Very similar in colours and markings to /. Ondina, but much larger; the hind wings 

 in the cf different in shape. 



rf ?. Expanse 2'' 1". Fore ivinif the .same in colours and markings as 1. Orolina 

 (fig. cit.), the only diirerences bcuiig that the orange belt of the apical border is neatly 

 margined with blackish on its inner side, between the 2nd and ord median branches, and 



