CATAGRAMMA. 259 
C. atacame similis, quoad colorem alarum paging superioris; subtus anticis fascia discali ad basin nulla, posticis 
lineis tribus flavis transfasciatis, area inter secundam et tertiam maculis ceruleis septem irregulariter 
positis notata, fascia quoque cerulea submarginali ornatis. 
Hab. Mexico1?; Guatemana, Choctum (LHague). 
A rare species, at present only known from Mexico and Guatemala; and from the 
latter country a single specimen alone has reached us. It was first described and 
figured in the ‘ Genera of Diurnal Lepidoptera’ under a manuscript name of Boisduval’s, 
and again figured by Hewitson in his ‘ Exotic Butterflies.’ 
It may be distinguished from its allies in having the tawny band of the primaries as 
well as those of the secondaries beneath very narrow. The blue submarginal band of 
the secondaries extends right round to the apical angle. In the only other allied 
Central-American species this band for half its length is tawny, and the blue of the 
secondaries above is of a much brighter hue. 
In South America three other allied species occur, the nearest being C. salamis of 
Felder ; but this differs both from C. lyca and C. erias (next described) in having the 
tawny band of the primaries beneath approaching almost to the base of the wing; C. 
mionina of Hewitson is also an allied form with a large elliptical tawny spot in the 
primaries. C. egina of Felder is again another nearly related species, in which the 
tawny band of the primaries occupies more of the costa and approaches the base of 
the wing. 
4, Catagramma erias, sp. n. 
Catagramma lyca, Butl. & Druce, P. Z. 8S. 1874, p. 343} (nec Doubleday). 
C. lyre similis, sed plaga cyanea posticarum viridescentiore, subtus linea posticarum submarginali haud omnino 
cyanea sed dimidio apicali flavo distinguenda. 
Hab. Nicaracua, Chontales (Belt, Janson), Graytown (Muncaster); Costa Rica 
(Van Patten1); Panama, Volcan de Chiriqui (Champion), Veraguas (Arcé), Lion Hill 
(M‘Leannan). 
It seems desirable to separate this Central-American form from its South-American 
allies, seeing that the differences observable, though small, are very constant. It 
comes nearest to C. salamis, having the tawny band of the primaries above of nearly 
the same width. Beneath, however, this band does not approach the base of the 
wing as in that form. From C. lyca it differs in the greater brilliancy of the blue 
of the secondaries, and in having the apical half of the submarginal band of those 
wings beneath tawny. 
C. erias is by no means scarce in the State of Panama, and thence northward to 
Nicaragua. A Costa-Rican specimen obtained by Van Patten was called C. lyca by 
Messrs. Butler and Druce; but it undoubtedly belongs to the present species. 
a 2u2 
