422 Mr. W. J. Kaye's Notes on the dominant Miillefian 



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 2^hilidas, G. and S. 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 diiferent months of the year. 

 C. philidas, G. and S., is in all probability only an 

 aberrational form of C. ninonia, Hlib,, and this again links 

 up with intermediates to C. bendis, G. and S., and G. eudea, 

 Godt. The species should therefore be called eudea, and 

 all the ditferent forms are merely aberrations on the Potaro. 

 But the forms doubtless become fixed and definite in dif- 

 ferent localities. Thus at Roraima the j^hilidas form seems 

 predominant, but in Trinidad typical eudea 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 0. eudea and G. ninonia are the same. The very trans- 

 parent look of some G. ninonia males is unquestionably 

 due to wear, the scales brushing off in the way that the 

 Hemarine Hawk Moths do. G. harii, Bates, is, however, 

 a good species, and is always to be distinguished. Of un- 

 doubted G. j)hilidas 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 S. Kensington 

 are two remarkable specimens labelled " Roraima," which 

 have the whole of the lower half of the hind-wing black 

 as in the dark Lycorea species and in Hdiconius veticst^is. 

 Further evidence from Roraima supports that adduced 

 from the Melinxa crameri that probably there there is 

 to be found a much darker association generally. 



* The specimen mentioned on page 416. 



