Collection of Madame Gaston Fournier. 69 
knowledge by describing several new species and subspecies, 
and also by correcting a certain number of errors that were 
bound to be found in a work of such magnitude as that of 
M. Houlbert. 
As Madame Fournier’s collection of Castniinze now ranks 
among one of the finest of this family, it has occurred to me 
that an account of the species it contains may be of interest 
to Lepidopterists, especially as in it I have discovered a new 
species and several new subspecies, and also am able to 
point out variation that exists in some species, that have 
hitherto been exceedingly rare in collections, of which 
Madame Fournier has long series. 
I have given a complete list of the specimens contained in 
the collection, so that any Lepidopterist desiring to visit it 
in order to study this family may know at once what material 
he will have to work upon, and at the same time it will 
serve to show the numerous gaps that still remain to be 
filled. 
A curious feature that I have noticed among some species 
of the Castniinz is the resemblance of males to females, and 
vice versé—I allude, of course, to the non-dimorphic species, 
such as Ypanema decussata, Xanthocastnia evalthe, ete. 
Usually the females in these species have the apex of fore 
wing slightly more rounded than in the males ; but it often 
happens that this character is not constant, and one has only 
to arrange a series according to it, and after to carefully 
examine the frenulum, and it will then be found that in most 
cases the sexes have been mixed. 
The variation in size of individual specimens of the same 
species is also very remarkable, and I give measurements 
of fore wing of a few of the most striking cases that I have 
before me :— 
3. 2. 
mm. mm, 
Aanthocastnia evalthe ....... » 80-39 30-48 
Erythrocastnia syphax .....045 37-52 37-53 
Ceretes marcel-serrest .....-.445 20-36 oe 
Sympalamides MUMON,.. 164.005 25-35 30-42 
Vpanema decussatd.....6..0+5. 26-40 31-44 
ACHOd PALALINUS: so ss Me ion» 30-41 29-43 
Haemonides cronida .......+.. 382-44 41-52 
I have arranged the collection before me after Houlbert, 
and have followed his classification throughout this paper ; 
but I think that a further study of this family will lead to 
the sinking of many new generic names used by him. 
