422 Mr. W. J. Kaye’s Notes on the dominant Miillerian 
These all group themselves together in a remarkable way, 
but it is not proposed here to deal with all of them. The 
Ceratinia which above all others conforms to the main 
group is Ceratinia philidas, G. and 8. Whether this is a 
good species or a form of another is open to question. 
It becomes a matter of importance when one wishes to 
make a statement of its abundance or otherwise and its 
distribution through the different months of the year. 
C. philidas, G. and §., is in all probability only an 
aberrational form of C. ninonia, Hiib., and this again links 
up with intermediates to C. bendis, G. and 8., and C. ewclea, 
Godt. The species should therefore be called ewclea, and 
all the different forms are merely aberrations on the Potaro. 
But the forms doubtless become fixed and definite in dif- 
ferent localities. Thus at Roraima the philidas form seems 
predominant, but im Trinidad typical ewclea occurs alone. 
C. ab. philidas is much more frequent in the ? sex. The 
genitalia of C. philidas look hardly different to C. ninonia, 
the former only having a longer clasper, but the genitalia 
of CO. ewclea and C. ninonia are the same. The very trans- 
parent look of some C. ninonia males is unquestionably 
due to wear, the scales brushing off in the way that the 
Hemarine Hawk Moths do. C. bari, Bates, is, however, 
a good species, and is always to be distinguished. Of un- 
doubted C. philidas only seven specimens have been secured, 
but only one on the Potaro.* None of these show anything 
very different from the type which has the black central 
band not joined at any point with the black marginal 
band. It is of interest to note that the type specimen 
came from the Sierra de Sta Martha in Colombia. Although 
hitherto the Potaro district has not produced any very 
extreme forms there is no reason to suppose that they 
don’t exist, as at Omai lower down the Essequibo some 
much darker forms have occurred, and I have a specimen 
from there with a black streak in the cell of the hind-wing 
and which has a much heavier and wider black central 
band. But in the National Museum at 8. Kensington 
are two remarkable specimens labelled “ Roraima,” which 
have the whole of the lower half of the hind-wing black 
as in the dark Zycorea species and in Heliconius vetustus. 
Further evidence from Roraima supports that adduced 
from the Melinewa crameri that probably there there is 
to be found a much darker association generally. 
* The specimen mentioned on page 416. 
