( com) 
Ceylon. Copulation had been so complete that the two 
insects remained in the same position after death. It was 
possible that the structural differences in the sexual organs, 
while permitting the act of copulation, might have hindered 
the separation of the parts. The abnormal pair consists of 
Appias libythea, Fab., 3, and Teracolus limbatus, Butl., 9. 
Dr. Dixry, the Rev. G. WHEELER, and Dr. M. Cameron 
commented on this exhibit, giving further instances of 
abnormal pairing. 
VARIATION IN HeELIconius Doris, L.—Mr. W. J. Kaye 
exhibited a large and very variable series of Heliconius doris, 
L. He said that the species had always been an interesting 
one by reason of its curious phase of variation, which was 
usually one of dimorphism in both sexes. Both ¢ and 9 
were either blue or red-streaked in the hind-wing. In some 
localities, however, the red area was reduced or enlarged, 
but the blue form not only underwent this variation, but 
also became pale blue, bluish-green and green, such as was 
found in the region of Chiriqui in Panama. In the Cauca 
Valley in Colombia a very special phase of variation was 
found rarely, with both blue and red forms devoid of the large 
central yellow blotch, but occurring with normally blotched 
forms. In the San Esteban Valley in North Venezuela there 
occurred one of the rarest forms, that with the central blotch 
white. This phase occurred in both red and blue forms, 
but the former was considerably rarer, although both were 
very scarce. Occurring rarely in a number of localities, 
such as Venezuela, Colombia, Ecuador, Guiana, C. Brazil, 
was a form known as amathusia, where the blue and red 
streaking was mixed in varying degrees. The red form known 
as delila, which exhibited a large amount of red at the base 
of the fore-wing extending into the cell, was only found when 
other species of Heliconius had this characteristic such as 
in the Guianas, where H. xanthocles, H. aede astydamia and 
H. burneyi catharinae all occurred together. The specimens 
exhibited were divided into the localities from whence they 
came, and included from British Guiana typical doris and 
delila; from Trinidad doris and eratonia; from Cauca Valley, 
Colombia, eratonia, obscura, tecta, metharmana, aristomache ; 
