Diurnal Lepidoptera from South America. 143 
the true Papilio luna of Fabricius, in being uniformly much 
paler in colour. This Nicaraguan race, having apparently 
permanent characters and a distinct geographical habitat, re- 
quires aname. We propose to call it Hetera pallida. 
4. Prerella ocreata. 
6. Exp. 2°75. Dark brown, the anterior wings have three 
black bands crossing the cell, the middle one being prolonged 
to the inner margin; the end of the cell is also black: two 
parallel black bands cross the wing from the inner margin to 
the costa, the innermost traversing the third section of the 
median nervure; between these bands and the outer margin 
are a series of spots, that nearest the costa white, the next 
black, and the two following white: the posterior wings have 
three black cross bands, being the continuation of the first, 
second, and fourth of the anterior wing; beyond the third of 
these bands is a large white patch, followed by a red one, 
the latter having a transverse irregular lower margin, and 
enclosing a distinct white spot between the third median 
branch and the lower radial; beyond these patches the wing 
is darker, and has a white spot between the upper radial and 
subcostal nervures, and a pupillated black ocellus between the 
radials; the outer margin is rather deeply indented, the end 
of the third median branch carrying a somewhat prominent 
tooth ; the indentations are all margined with buff. The ge- 
neral coloration of the underside is paler, the bands being 
more strongly shown ; between the two parallel bands is pale 
greyish, which is continued on the posterior wings as a large 
angulated patch tinged with red over its lower portion: the 
neighbourhood of the anal angle is tinged with buff, and a 
buff line between two black lines follows the sinuations of the 
outer margin: a third white spot appears between the second 
and third median branches, and the ocellus has a buff sub- 
marginal ring. The anal patch, characteristic of the males of 
this section, is dark brown. 
9. Larger and darker, the anterior wings being less acute ; 
the underside of the posterior wings has a fourth white spot 
between the first and second median branches. 
Hab. Panama (M‘Leannan), Veragua (Arcé). 
Mus. 8. & G. 
Allied to H. helvina of Hewitson, from which it manifestly 
differs in having the upper portion of the red spot white. 
5. Antirrhea pterocopha. 
3. Exp. 3°85. Apex of the anterior wings not rounded, 
but abruptly obtuse, the outer margin being angulated at the 
