272 RHOPALOCERA. 
no means confined to Central-American examples, but may be traced in individuals from 
the extreme southern limits of the range of the species. In Guiana and the valley of 
the Amazons the band of the primaries is for the most part of a purer white; but this 
character as well as the others is variable. Peridromia amphinome is a common species 
in Central America. In Guatemala it is found chiefly in the lowlands, its range in 
altitude probably not exceeding 3000 feet. 
3. Peridromia arienis, sp.n. (Ageronia arinome, Tab. XXVI. figg. 11, 12.) 
P. amphinome sed anticarum apicibus nigrescentibus, fascia anticarum multo magis indistincta, angustiore, et 
fusco atomata; subtus maculis tribus posticarum basalibus et aliis submarginalibus tantum coccineis 
diversa. 
@ adhuc ignota. 
Hab. Panama, Lion Hill (M‘Leannan).—Co.omBia. 
A close ally of P. arinome, but differs in having the apex of the primaries blacker, 
the band of the same wings narrower and much obscured by dusky markings. Beneath 
the colour is darker, and there are three red spots at the base of the costa of the 
secondaries instead of two, the usual number in the allied species. P. arienis is 
probably a north-western race of the Guianan and Amazonian P. arinome. It differs 
from P. amphinome in having the red marking of the underside of the secondaries 
reduced to three spots at the base of the secondaries, and a submarginal row of four or 
five spots on the same wings. The costa of the primaries too is more curved towards 
the apex. 
Two male specimens are all we have at present seen of this butterfly—one sent us by 
M‘Leannan from Panama, the other by Salmon from Frontino in the Cauca valley of 
Colombia. 
a’. Underside of secondaries tawny. 
4, Peridromia fornax. 
Ageronia fornax, Hibn. Samml. ex. Schm. ii. t. 40. £1, 2°; Doubl. & Hew. Gen. Diurn. Lep. 
p. 83, t. 10. f.17; Butl. & Druce, P. Z.S. 1874, p. 347 *; Strecker, Butt. N. Am. p. 140°. 
Alis fuscis griseo-ceeruleo variegatis, anticarum dimidio apicali preter apicem ipsum sordide albo maculato, posticis 
ocellis serie submarginali positis ; subtus anticis triente basali fulvida, reliquo fusco albo maculato ; posticis 
pro majore parte fulvis, angulo apicali et margine externo nigris, serie macularum albarum submarginalium 
et aliis marginalibus albis. 
Hab. Nortn America, S.W. Texas*.—Mexico2, Cordova (Riimeli); GUATEMALA, 
Polochic valley (Hague), central valleys (F. D. G. & O.S8.); Costa Rica (Van Patten 3); 
Pawama, Chiriqui, Bugaba (Champion).—CoLomB1a; VENEZUELA? ; Ecuapor ; Bo.ivia ; 
BRAZIL ?. 
A wide-ranging species first made known by Hiibner’s figure 1, and subsequently by 
that of Doubleday 2. It is included in the fauna of North America by Strecker “, as it is 
