felderi. 
cleobaea. 
zorcaon. 
adusta. 
isabella. 
dissoluta. 
arquata. 
imitans. 
hiibneri. 
dynastes. 
pellucida. 
seitzi. 
vegetissima. 
hippolinus. 
margaritifera. 
personata. 
brunnea. 
spoliata. 
dianassa. 
decolorata. 
398 EUEIDES. By Dr. A. Serrz. 
spot. It flies in Peru in company of the similarly coloured Hel. melpomene as well as of some Actinote and Pie- 
rids which resemble it. — A transition from the last described form to eanides is felderi Stich., which closely 
resembles #. pluto, but still retains the red rays. None of these forms are scarce, but not easy to recognize among 
the numerous Heliconius flying about; indeed it is only after one has learned to distinguish the Huwetdes 
from Heliconius by the slower motion of the wings, that one may hope to capture larger numbers of them. 
E. cleobaea Hbn.-G. received its name from its close resemblance to certain species of Lycorea, although 
Lycorea cleobaea itself possibly was not its model. Forewing brown-yellow, intersected by black longitudinal 
stripes. The type is found in Cuba and Porto-Rico. — zoreaon Reak., ranging through Central America as 
far north as Mexico, differs but little, in having the black apical markings of the forewing increased, in 
consequence of which the bands, which are somewhat lighter and in the 92 rather pale yellow, are broken 
up into several more or less separate spots. — adusta Stich. (80g) is an inconstant intermediate form, from 
Chiriqui and Honduras; hindwings with the band dissolved into a series of spots. Not scarce. 
E. isabella resembles somewhat the preceding species, but the longitudinal striation of the wings is 
less regular. The forewings have the apical half more profusely marked with black, often black throughout; 
on the hindwings the median band is as a rule broken up. All the forms shade quite imperceptibly into one 
another so that the names given them have but little value. We figure here all the distinct forms, taken 
for the most part from the original types. As a rule the difference in colour is only due to the fact that in 
the several localities they have followed different models. The name-type isabella Cr. (80d) occurs in the 
eastern portion of South America from Guayana to Central Brazil, according to reports as far as Bahia (where 
I found, however, only #. dianassa). Before the black apex an isabel-coloured oblique band similar to that 
we find in much worn or faded specimens of dianassa; but it differs from dianassa in having the large 
white or sulphur-yellow subapical spot replaced by a row of 3—4 small, pale coloured, isolated spots. In 
typical isabella the hindwings have the median band uninterrupted, whereas in dissoluta Stich. (80 f), from Peru 
and Bolivia, this is dissolved into isolated spots. — An intermediate form is arquata Stich. (80g), having the 
median band also divided into spots which, however, are still touching one another; on the forewings the yel- 
low subapical spots larger. Colombia and Panama. — imitans form. nov. (80f) approaches dissoluta, but the 
sulphur-yellow oblique band is absent, being replaced by the ground-colour. — In hiibneri M/én. (80 f) the obli- 
que band is dissected into 3 spots separated by black; from Colombia. — dynastes Fldr. from Venezuela 
has the band loosely connected, in the 9 yellow-ochreous, similar to that of pellucida Srnka (80f) from western 
South America, distinguished from the others by having the median band reduced to a row of small oval spots. 
— Very similar is seitzi Stich. (80 f), from Colombia and Ecuador. Upper surface only marked with two colours, 
the oblique band as well as the apical spots being replaced by the ground-colour, whereas in vegetissima 
Stich. the sulphur-yellow band and apical spots stand out clearly upon the deeper ground-colour. From Kcua- 
dor. — hippolinus Bélr. (S80 e) from Peru resembles seztzi, but has the apex of the forewing entirely black, 
without any spots. — The same is the case in margaritifera Stich. (80 e), which has, however, the median band 
of the hindwing broken up into oval black spots. — personata Stich. (80 e) resembles the latter, but has on the 
forewing the black colouring so much increased that it not only covers the entire apical area, but spreads to the 
middle of the wing where it confluesces with the black spot at the apex of the cell. Peru. — brunnea Stich. 
(80 e) is again like personata, but has on the forewing the black apical area interrupted by a chain of spots mar- 
ked like the ground-colour. Likewise from Peru. — ab. spoliata Stich. from the Cauca Valley is based upon a 9 
in which the black markings are so much increased that on the forewing the ground-colour is almost completely 
obscured, and on the hindwing interrupted by an unbroken, heavy median band. isabellais, whereever it occurs, 
very common. 
E. dianassa Hbn. (80d). Very much like the preceding; the forewing with a generally sulphur- 
yellow oblique band which in worn specimens fades to dull ochreous. At the apex a snowy-white, obliquely 
oval spot, occasionally tinged with yellow or dusted with black and followed (before the very apex) by a few 
white dots faintly shining through from underneath. Typical dianassa exactly copy Hel. narcaea (72 2) with which 
they associate. At Santos where the latter has the costal streak of the hindwings dusted with red, that band 
is also in dianassa generally tinged with ochreous, and decolorata Stich. (80 d) which accompanies the similarly 
coloured narcaea f. satis, lacks on the hindwing the pale yellow band altogether. In the company of dianassa 
we find, besides H. narcaea, a great number of similarly marked butterflies, such as Protogonius drurit, Melinaea 
ethra (33 d), Mechanitis lysimnia (34 b) and nessaea (34 b), Ceratinia euryanassa (35 b) etc., all of which occur in 
