On the Identity of certain Species of Diurnal Lepidoptera. 435 
sides, from the prothorax to the apex of the abdomen, ashy. 
Legs black, basal joint of tarsi grey. 
3. Apical ventral segment truncated, sharply notched in the 
middle ; dorsal segment slightly emarginated in the middle. 
Para. The species resembles greatly in form and coloration 
certain species of Colobothea. The absence of a lateral carina to 
the elytra readily distinguishes it from that genus. 
Eutrypanus Colobotheides, White (Cat. Long. Col. Brit. Mus. 
i. p. 872), belongs also to our genus Sporetus. 
XLVI.—WNote on the Identity of certain Species of Diurnal Lepido- 
ptera. By Artuur Garviner Burter, F.Z.S. 
For the information contained in the present paper I am in- 
debted to M. Victor von B6nninghausen, who visited the British 
Museum a few days ago for the purpose of seeing the collec- 
tions. This gentleman has resided for some years at Rio Janeiro, 
where he has been engaged in studying the transformations of 
Lepidoptera. 
Whilst looking through the collection of Diurnal Lepidoptera, 
M. Bonninghausen pointed out several apparently good and 
distinct species as opposite sexes of the same insect; and, upon 
examination, I find the one form to be represented by males 
only, and the other by females. 
There can be no doubt of the possible identity of apparently 
distinct species, as many curious instances of dissimilarity in 
the sexes of Diurnal Lepidoptera are already well known; yet 
men are generally slow to believe what they have not personally 
proved; and thus in many instances the opposite sexes of a 
species have been kept apart until the continued assertions of 
eye-witnesses, or perhaps the arrival of an hermaphrodite speci- 
men, have at length removed all doubt of their identity. 
The following insects have been bred by M. Bonninghausen, 
and are said by him to be sexes :— 
$. Papilio torquatus, Cramer, Pap. t. 177. f. A. B. (1776). 
?. Papilio Polybius, Swainson, Zool. Il. ser. 1. t. 137 (1821). 
Bred from larve, and taken in copuld. 
3. Papilio torquatinus, Esper, Aust. Schmett. t. 45. f. 2 
(1785-98). 
9. Papilio Argentus, Martyn, Psyche, pl. 14. f. 34 (1797). 
Bred from ova found on orange-trees. 
In Mr. G. R. Gray’s ‘ Catalogue of Lepidoptera,’ pt. 1. p. 40, 
Papilio Lysithous is placed as the male of P. Argentus. We do 
not, however, possess this insect; but, judging by the figure, I 
hould myself imagine it to be a variety of P. Argentus. The 
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