OF Tin. AMAZON VALLKY. 565 



Fig. .3. LeptaViH Tlicoiiov, var. Li/sinui- (llcwitsoii. Dcscrilu-tl by tliis iiullior us ;i tlistliiict upccies. The 

 wliiU" foro part of the hind wing i.s merely a sexual chinacter, and i^, hidden hy (lie (ore wing in 

 tiie natural position of the wing.s). — Kga, Upper ,\nia/.ons, (Ij*^ \V. long. 



Fig. :Ui. Stularltti.i P/uetliisa, var. Diiralii (I'erty).— Kga, Upper Ania/ons, l','> W. long. 



The resendilanee hetween these two i.s very great, wiien flying in (heir native woods. 'I'he 

 Li'j)ta/ii is quite unlike any llliomla found in the whole region, and is supposed Id liiivc \n;\\ 

 ailapted to the Ktaldclilin, because its original variations were in the direct ion ol Stitldililm, and 

 tlii.s disguise e(pially well .serveil the |)nrpose of pres<rvatioM with that of an llliniitKi. 



Fig. 1. Lcptalis Thti)iii)i,\M\ — Fga. Described by llewiison as a variety of /.. Li/.sinor, JCxol. Mutt 

 Lcptalh, lig. l.i. 



Fig. 5. Li'jittili.i Tltviiiinf, var. — I'^ga. 



Fig. (i. Leptitlis Tliconor, var. — I'-ga. This has considerable resendilanre to Itlioinin lUinisnu, (ig. (1 «. 



Fig. 7- Lcjjldlin Tlieimo'e, var. .St. I'aulo. 



Fig. K. Lcjitd/i.i Tln-oiKji', var. — Kga. 



Fig. y. Lr/i/it/is TIti'Oiioi', var. St. I'aulo. 



'I'liese si.\ varieties occurred only in single or very li\v cxainpics : they iniilale (with the 

 exception of (ig. (J) no other insect, and .ue su|)posed to be either .sini|ile variations l.sjitjrtsj or 

 renniants of the steps of niodiflcali(jn which have led to the vaiious C(»niplele adapta'ions in tin' 

 two districts where they are found. In any case (since it is impossible to suppose that each is 

 an uninodilied descendant of a parent originally created, in the usual sense <jf tli<; tc-rinj thcv nia\ 

 be taken as alTording proof of the variability ol' liie species in scv( r.d divergent directions, 

 tending towards resemblance to lllioiiiitf. 



Fig. Ciii. lUioiiua lll'iHixxa (llewits.). — Kga. 



Fig. 10. /^<Vyy;//,v y/s7/««« (n. sp. <jr var. ?), decejilively like, when (lying, UIkhuki :l;lt(i,:\. small -species 

 near akin to /. lUliuxaii, and found in company with it at Kga. 



Fig. II. Diopiis llcrd'uia (n. sp. or var. ?j. (;io.sely resendjh-s, whin (lying, lllKniua IliriUnn 'I'l. L\'l. 

 (ig. 1 «), and found in company with it at St. I'aulo. 



Fig. 12. Diojj/is Oiiff/a (n. sp. or var. ?j. (Mosely resembli-s, when flying, ///loi/ua Onri/n 'I'l. I,\' 

 tig. 2 u), and flies in company with it at St. I'aulo. 



Fig. 1.5. Diojttis dijma (Doubleday). Closely resendjles Itlioinia ('ijmo, a sj)ecies similar Id /. hluni 

 (fig. 1 a olthe present Plate), and (lies in comjiany with it at I'ara. 



ri.ATi; LVl. 



Fig. 1. Lejital'ts Tliconu'e, var. I'lnjlknic St. I'aulo, *;!> \V. lonjr. 



Fig. 2. LcjiIuUh ThcfjiiOi'-, var. Enjtliroi-.-'Sy. I'auhj. 



Fig. .!. Lejitaris Tlicomji'-, var. Erijtliroi'-. — St. I'aulo. 



Fig. .i «. Itli'tinia (Jrutiiiu, var. (Utrijsijdoniu. — St. I'aulo. 



The linking variations belw{;en L. Eryl/iror- :iit(l 7'/i(0ii>/r can be traced through the \aneties 

 ■S, .'), and C, of the [)receding I'late. The substitution of red fitr while in the fore wings is seen 

 t<j be a simple variation. Some traces of the iiarnjwing of the red margin of the hind wing are 

 also seen, 'i'lic imitation oi' l/homia is not nearly so close as it is in the cases of (igs. I and •_' ol 

 the preceding and (ig. ( of the jjresent I'late, but there is a consi(J(;r.ible approximation, giving 

 the aitjjcarance of a striving after a correct imitation. 'I'he selection of individnals ii.ivnig ilii- 

 most faithful likeness is here eitlier not rigid or \\( see tin- formalion >/f an . \aci rniMMtn 

 analogue in process. 



Fig. 1. Lijjtulit I'ltfonoi', var. Leucoiioi'. — St. I'aulo. 



Fig. Au. ItliOiiua lli'rdiaa (Ilewitsonj. — St. I'aulo. 



This Li-iilaita ajipears at (irst sight an abscjlutely (Ji>tincl s|)i.cjis. but il |^ plainly a iimdilica- 



