GENUS GASTNIA AND SOME ALLIED GROUPS. 191 



basi obscurioribus : alis subtus similiter ac supra coloratis, posticarum costa et 

 striga parallela subcostali nigris : abdomine fulvo, apice obscuriore ; subtus medio 

 sterni abdomineque albidis. Long. corp. unc. If . Exp. alar. antic. unc. 4^. 

 Sab. Veragua {Salvin). In Mus. Hopeiano Oxonise (olim Saunders). 

 The arrangement of the branches of the postcostal veia in this species is peculiar, there 

 being no basal cell formed by the transverse junction of the middle branches ; the third 

 branch springs from the second at a considerable distance from the base of the iatter ; 

 and the -ith and 5th branches arise at a considerable distance from the transverse base of 

 the 6th branch {i. e. b 5*), which forms the termination of the discoidal cell. 



65. (10) Castnia ctcna. (Plate XXXII. fig. 2.) Alis anticis subovatis fusco-nigris, 

 basi, costa, striga media (e basi ad medium alse extensa) margineque postico obscure 

 fulvis, striga media subcostali obliqua, macula ovali discoidali, fascia obliqua inter 

 medium et apicem maculisque 9 magnitudine variis albidis ; alis posticis Igete au- 

 rantiacis, extus in flavum pallescentibus, limbo intus acute dentato nigro : capite 

 albo-pimctato ; antennis albidis basi nigricantibus : thorace fascia antica transversa 

 fulva maculisque duabus posticis albidis : abdomine fusco, lateribus ventreque 

 fulvis. Long. corp. unc. l^. Expans. alar. antic. unc. 4. 



Var. minor (exp. al. ant. unc. 3^) fascia basali alse anticas et striga marginis postici 

 obsoletis, coloribus etiam magis vividis. 



Rab. Columbia. In Mus. Hopeiano Oxonise (olim Saunders). 



The broadly ovate fore wings and the richly coloured hind wings, with their strongly 

 dentated black border, distinguish this species, which agrees with C. ecuadoria in the 

 arrangement of the ceUs and branclies of the subcostal vein of the fore wings. 



66. (11) Castnia mimica. (Plate XXXII. fig. 7.) Alis fusco-nigricantibus, certo situ 

 parum metallicis, anticis elongatis basi obscurioribus, squamis nonnuUis rufis juxta 

 tegulas ; posticis macula magna transverso-ovali inter medium et angulum analem 

 flavescente : capite nigro, pvmctis duobus ante antennas, linea tenui postica pone 

 oculos, thoracis macula minuta antica albis ; tegulis rufis ; abdominis segmentis 

 intermediis lateribus rufo angulariter maculatis, squamisque albis strigas breves 

 laterales ad basin segmentorum formantibus : antennis nigris, clava siibtus fulva : 

 coxis anticis et 2 posticis geniculisque pedum 4 anticorum rufis : abdomine subtus 

 utrinque albo maculato, segmentis intermediis macula parva rufa in medio notatis. 

 Long. corp. unc.lj. Expans. alar. antic. unc. 3 lin. 



Sab. Amazonia. In Mus. Hopeiano Oxonise (olim Saunders). 



C. mimica, Felder, Reise d. Novara, Ins. Lep. pl. 79. f. 4 (sine descript.) . 



This remarkable species is, as to its colours, unique in tlie group ; its wings are also 

 of peculiar form, giving it an aspect quite alien to its allies ; it possesses the elou- 

 gated ceU at the base of the branches of the subcostal vein ; but the 3rd and 4th 

 branches arise at some distance beyond the ceU. (Plate XXIX. figs. 11, 12.) 



