Chap. XIV, 



OCELLI. 



1 oo 



oo 



jparchia Janira) exhibiting numerous gradations from 

 a simple minute black spot to an elegantly-sbaded 

 ocellus. In a S. African butterfly (Cyllo Leda, Linn.) 

 belonofinfr to the same familv, the ocelli are even still 

 more variable. In some specimens (A, fig. 52) large 

 spaces on the upper surface of the wings are coloured 

 black, and include irregular white marks ; and from 

 this state a complete gradation can be traced into a 



A 



A I 



Fig. 52. Cyllo leda, Linn., from a drawing by Mr. Trinien, shewing the extreme range 



of variation in the ocelli. 



A. Specimen, from Mauritius, upper 



surface of fore-wing. 

 Ai. Specimen, from Natal, ditto. 



B. Specimen, from Java, upper surface 



of hind-wing. 

 Bi. Specimen, from Mauritius, ditto. 



tolerably perfect (A^) ocellus, and this results from the 

 contraction of the irregular blotches of colour. In 

 another series of specimens a graclation can be followed 

 from excessively minute white dots, surrounded by a 

 scarcely visible black line (B), into perfectly symme- 

 trical and large ocelli (B^).^^ In cases like these, the 



■i^ This woodcut lias been engraved from a beautiful drawing, most 

 kiudly made for me by Mr. Trimen ; see also his description of the 



