5iS MR. H. W. BATES ON THE HELICONIDE LEPIDOPTERA 



pletely from tlic ])arental stock, /. OroUua, and iiiliabits a distinct area of country. 

 Illioiuia CUlonla (llcwitson, Exot. Butt. Ilhomla, fig. 122), of New Granada, is another 

 local race of the same stock. /. Sarepta comes nearest to /. Aiwcllana, and I, Cidoiiia 

 to /. Chrijsodonia. The five varieties found mingled together at St. Paulo cannot be thus 

 separated, altliough they show, as we have seen, differences of structure as well as of 

 colour and markings. They form a graduated series, and have not reached the stage of 

 (•omplete segregation. The differences in the veining of the mngs are evidently the 

 correlated result of the altered shape and increased or diminished size of the wings. I 

 considiH- this Orollmi grouj) cii Ithotnice to he nearly equivalent to the 7//i«z.s*<'' group; 

 tlic difference between tlie present condition of the two is that in Ithomla Orolina and 

 its allies the segregation of the forms is only partially complete, whilst in I. Illun.sfia and 

 its Icindred it is almost perfc^ctly so. 



A variety of Leplalis Lysinoe {L. Erytliroe, PI. LVI. figs. 1, 2, 3), a Napeogenes [N. 

 ('orciKi), and a Bombycide Moth {Diop)t'ts, n. sp.), all assimilated in colours to L. Oro- 

 lliia and its varieties, occur in company with them at St. Paulo. 



20. I'PHOMIA Oriana, Ilewitson. 



IllKini'iti Oriana, Hcwits. Exot. Butt. Ithomla, fig. 134. 



Abundant at St. Paulo, in the moister parts of the forests. 



21. Itiiomia Virginia, Ilewitson. (PL LVI. fig. <oa.) 

 Ithornia Virtjinia, Ilewits. Exot. Butt. Ithomia, fig. 18. 



Banks of the TT])per Amazons, from the mouth of tlie Pio Negro to St. Paulo. It is 

 |)i-ol)aldy a local \aricty of /. Cijino. The upper radial is partly aliorted in the $ . 



22. Ithomia Cvmo, Hiibner. 



Itiiom'ui CijvKi, Iliihn. Samml. Exot. Schni. 

 Galitii, Ilewits. Exot. Butt. Ithuiidu, fig. 5. 



W'ry abundant at Para, in company 'with I. Flora. The u})per radial is totally wanting, 

 .•ind the lower disco-cellular partly aborted ui the d . 



2:5. Ituomia Nmphkli;, n. sj). 



'^ ?. Ex])anse 2" r/". Hyaline, slightly fuliginous. Fore lohxj with a luirrow black 

 border, which is broadest, along the bind margin ; there is a short, lu'oadish, obli(|ue bhu-k 

 belt across the end of the cell, and beyond this an oblique clialky-white belt, beginning 

 <in tlie costa, where it lornis an opake white stigma, and nearly reaching the middle of 

 I he .'ii-d median branch ; the nervures which it traverses arc also white ; the 2nd and 3rd 

 nicdi:in l)ranches, as well as the rest of the nervures, are black ; there is also a series of 

 ohscin-e whitisii spots l)et ween the nervures, near the outer border. Beneath, (lu- black 

 borders and l)elt. are reddish orange. 



Uliid winy witli a narroAV, clearly defined l)lack l)ordcr, which beneath is reddish 

 orange. 



Body and antenna; l)lack ; head and thorax marked with wliite. 



