SIDERONE, 333 
where they resorted to a low hill, called San Cristobal, which is clothed on its slopes 
with thin forest. 
b. Wings of both sexes black with crimson bands. 
8. Siderone ide. 
Siderone ide, Hiibn. Samml. ex. Schmett. ii. t. 56°. 
Siderone thebais, Feld. Wien. ent. Mon. vi. p. 4227; Reise d. Nov. Lep. t. 60. f. 6, 7°; Butl. & 
Druce, P. Z. 8. 1874, p. 340°. 
Alis anticis extus rotundatis, posticarum angulo anali producto, omnibus fusco-nigris ; anticis triente basali et 
fascia lata obliqua ultra cellulam coccineis, punctis duobus ad apicem albis, posticis macula apud coste 
medium interdum in fasciam producta coccinea, maculis indistinctis submarginalibus precipue ad angulum 
analem canis; subtus lete velutino-rufo-brunneis maculis obscurioribus irroratis, linea communi ab angulo 
anticarum apicali ad angulum posticarum analem, plaga magna subtriangulari apice costam posticarum 
attengente et margine externo dimidio anali glauco rufescentibus, anticarum apice nebuloso cano maculato, 
palpis subtus et pectore canescentibus. 
Hab. Muxico, Valladolid in Yucatan (Gawmer); Guatemaa, Polochic valley (Hague), 
Las Mercedes (Champion); Nicaragua, Chontales (Belt); Costa Rica (Van Patten *) ; 
Panama, David (Champion), Chitra, Calobre (Arcé), Lion Hill (M‘Leannan). — 
CotomBia 2 to Sour BraZzIL. 
The extreme forms of this species are represented by Siderone ide, in which the red 
of the secondaries is reduced to a costal spot, and by S. thebais, in which the red 
constitutes a distinct band running towards the anal angle. 
The S. ide type is found prevalent in Guatemala, Nicaragua, and Costa Rica ; in the 
neighbourhood of Panama the S. thebais form is found, but at Chiriqui the two pass 
completely the one into the other by insensible steps, so that any certain definition 
between them fails. 
Outside our limits we find S. ide in Brazil, and S. thebais in Colombia, and another 
form appears in S. marthesia in Guiana and the valley of the Amazons. This latter 
insect is distinguished in its typical form by the red of the primaries blending into 
one continuous patch; but there is evidence in the specimens before us that this 
character is not very stable. ‘lhe typical females, moreover, of S. marthesia have the 
red of the primaries replaced by tawny. ‘This character, too, appears to fail in more 
western examples, as we have insects from Ecuador red like the males. In Cuba and 
Haiti a Siderone occurs which is probably not really separable from 8. ide, but our 
series is hardly sufficient to settle the point. The femalesin this form have a dull reddish 
border to the secondaries not observable in continental specimens, except at Panama, and 
these, again, have more red on the secondaries. There are two names available for this 
Antillean Siderone. It is evidently the Papilio nobilis nemesis of Iliger described from 
Haitian specimens, and it is also the Mymphalis rogerti of Godart, figured by Lucas in 
his ‘ Lépidoptéres exotiques.’ 
Should it be found necessary to unite all these forms under one specific name, 
