to some uneatable genua or species, and tliis may apply in the present case. Dr. Horsfield, 

 who was no advocate of this theory, writing in pre-Darwinian times, and with a strong leaning 

 to the views (Circular and Quinarian) of MacLeay, with the thoroughness that marks all his 

 work, was struck by the appearance of these larvae, and sought for their analogy.* This he 

 considered was to be found in the Myriopoda ami in the ^emis Scuiitfcra. On the lines of this 

 theory (mimicry) such a view is extremely interesting, and acquires a reasonableness which 

 the MacLeayian doctrine f failed to supply. 



A. Cell of posterior icings H}>p<UYHtlit t'-loxet! i»j ,t sitlmhitoU'tf ,tnd strutter nerrulr. 



1. Euthalia derma. (Tab. XIX., fig. 4 <? .) 



AAotia* Dmna* Koilar, Hug. Kasciim. iv. 2, p. 430 (1B48). 

 Aifotuu Eva, Fold. Boise Nov. Lep. iii. p. 482, o. 092 (1666). 

 • Atlt>lia# errfi/ttt t Race A, tUrpta, Bull, Proe. ZooL Soc. 1868, p. 600. 



Mule and Female. Wings above fuliginous-brown ; cell of anterior wings crossed by two waved 

 blackish lines at centre (between which is a prominent carmine spot), and two lines converging posteriorly 

 at extremity; cell of posterior wings with u faint lilaekisli ohliijuc Jim.: m-ur centri: ami two prominent 

 black lines at apex ; botb wings crossed by a diseai curved fuliginous fascia, commencing on anterior 

 winjjs m :tr end of cell, where it is broadest, and tfrmiuuUng on posterior wings near centre of abdominal 

 margin, where it is narrowest; beyond the fascia the colour is slightly paler, the posterior wings 

 possessing a somewhat faintly darker and very narrow submarginal fascia. Wings beneath pale greenish ; 

 cellular markings of anterior wings as above, but with the interspaces between the pairs of lines pale 

 brownish; a Btlb-bas&l fuscous streak outwardly margined with white, and an irregular spot beneath 

 cell near base of third median nervule- : cellular markings of posterior wings as above, but with an 

 additional curved black line beyond apex, a similar but shorter mark near and between the bases of 

 the discoidal and lower subcostal nervules, — this is preceded by a rounded spot between the subcostal 

 inTvnli-s and a larger and partly closed one emilaiuiug a carmine snot between the upper subcostal nervule 

 and costal nervure ; there is also a small carmine spot in cell ; a dar ker discal fascia crossing both wings 

 as above, a similarly coloured broad submarginal fascia commencing on anterior wings at upper discoidal 

 nervule and becoming obsolete on posterior wings at the median nervules, followed by a waved and 

 lunulate fascia broken between the nervulcs ; the anterior wings also possess a broad, darker ublitjue 

 subapical patcli, its margins and also the apical margin of posterior wings more or less iufuscated. 



Exp. wings, 6* 87 to 94 millim. 



II \u. — Continental India; Silbet (Brit. M us.) ; Assam (Felder). — Malay Peninsula; Perak (Dr. 

 Townsend — coll. Godm. & Salv.) — Java ^ Folder). — Borneo icoll. DiBt.) — Celebes (coll. Dist. and Brit. Mus.) 

 — Philippines ; Luzon (Felder). 



A single male specimen collected by Dr. Townsend in Perak, and which is here 

 figured, is the only knowledge I have of the species in this fauna. It is in itself closely 

 allied to A* eveMmi t Skdl 5 and has been called a local race of that species, simply, and 

 necessarily, because StoU's species was first described. Philosophically, however, as J. derma 

 has an exceedingly wide range, it is probably the archaic form, and A. evelitut the more or less 

 local race, 



* Zoological Jonra. v. p. 07 (1830). 



1 This was admirably suid laboriously developed by SwamRoii, with (to us* the words of Wallace) "an ainotmt of 

 Liicrtvlods* ami intimity UnU have rjiroly been Buipafised." See his 'Hist, wad Nat. Arrang. of lasecis.' in which ho was 

 useietcd by tihuckani. 



