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APPENDIX 
much less; they terminate in a very fine thread, having at its apex a 
punctiform button, which is sometimes wanting. 
Thymele simplicius, Stoll. = eurycles , Latr. (PI. Gr, Figs. 23-28). 
Herrich-Schaeffer 1 distinguishes three varieties of Eudamus ( Gonuruis) 
eurycles, as he calls the species designated Thymele simplicius in Kirby’s 
Catalogue. The first variety, which I have not seen here, has no 
transparent points or spots on the wings, and three costal spots on the 
under side only. In the second variety the three costal spots are visible 
on both sides of the wing, and it has a row of transparent dots along the 
basal half of the anterior [costal] margin. The costal fold is always present 
in the males of this second variety, which I have several times met with 
here. In the third variety the transparent dots and spots form a narrow 
band, sometimes stopping short of the third cell [viz. the internervular 
space above the second branch of the median] (as in Fig. 25), sometimes 
extending beyond the second nervure or first branch of the median (as in 
Fig. 23). According to Herrich-Schaeffer, both the male individuals, 
whose fore-wings 2 are represented in Figs. 23 and 25, belong to this 
third variety, although in one (Figs. 23, 24) there is no trace of a fold, 
while in the other (Figs. 25, 26) it is well developed. 
As this third variety is abundant on the Rio Itajahy, I have been 
able to examine a large number of individuals, and to confirm the fact 
that the fold is wanting from all the males in which the transparent band 
enters the first cell (Fig. 23), and is present in all whose band does not 
extend beyond the second nervure (Fig. 25). In the individuals furnished 
with a costal fold, the transparent spots differ greatly in number and size : 
there is an infinite number of forms intermediate between Herrich- 
Schaeffer’s second variety and other similar males without the costal fold, 
but possessing, like the former, the transparent spots in cells 3 and 6 
and barely distinguished by the absence of the transparent spot in cell 1. 
There is also considerable variation in the scales composing the down in 
the costal fold. 
The scales represented in Fig. 27 belong to individuals with only 
three costal spots—in cells 7 to 9—and wanting the transparent spot in cell 
3 (Fig. 25) : those in Fig. 28 were taken from a male with four costal spots 
in cells 6 to 9, and a transparent spot in cell 3. The scales enclosed in the 
costal fold show two principal forms. The first (Fig. 27 a, b , c, d ; 
Fig. 28 a, b) are distinguished by a lanceolate basal part, narrowing 
gradually to a more or less filiform terminal part, which is again expanded 
into a kind of lamina or triangular fan. The length of these scales in some 
males scarcely reaches 0*08 mm. to 0T6 mm. (Fig. 28), in others rising to 
0*2 mm. to 0‘3 mm. (Fig. 27). The scales of the second form are about 
the same length as the first, usually narrower (Fig. 27 e; Fig. 28 d), but 
sometimes perfectly capilliform (Fig. 28 d); they are drawn out very 
i Prodrom. Syst. Lepidopt., fasc. iii. 1868, p 61.—F.M. 
" The word used is “ interferes, E,A,E, 
