94 



or time of emergence must be found to account for the occur- 

 rence of these blue forms. 



He also exhibited a series of Melanippe tvistata reared from 

 midland county ova, and called attention to the slight amount 

 of variation shown by the individuals of the brood. Some 

 few had the dark markings slightly intensified, one only had 

 them considerably reduced, and in one other a faint pinkish 

 shade overspread the white ground. 



Mr. W. J. Kaye exhibited Herr Niepelt's types of Hcli- 

 conius forms, recently described in the " Deutsch. Ent. Zeit.," 

 1908, from Ecuador. They included H. melpomene aglaope, 

 forms isulda, rubripicta, adomoles, and gisela ; H. erato estrella, 

 form fcyeri ; H. xenoclea plesseni, forms corona and diadema ; 

 and H. xenoclea plesseni, form niepelti, described by Riffarth. 

 These forms of Heliconius were remarkable for their great 

 beauty and interest, in connecting what had hitherto been 

 regarded as rather isolated forms. All the specimens ex- 

 hibited, with the exception off/, estrella, form fcyeri, belonged 

 to the first great division of the Heliconidae, the Opisogymni. 



JANUARY 14th, 1909. 



Mr. Tonge exhibited enlarged photographs of several 

 species of Lepidoptera at rest on tree trunks, showing that, 

 even when exaggerated in size, the protective resemblance 

 was remarkable. 



Messrs. Harrison and Main again exhibited the results of 

 the breeding of Aplecta ncbulosa, and its forms robsoni and 

 thompsoni, to illustrate the remarks of Professor Bateson. 



Mr. L. W. Newman exhibited Abraxas grossulariata ab. 

 varleyata, Callimorpha dominula, yellow and red forms, and 

 Ennomos autumnaria, type and melanic forms, and gave the 

 following statistics : 



A. grossulariata. — 1907: 100 ova from varleyata all pro- 

 duced the type. 1908 : a typical pair of these produced a 

 partial second brood of 31, including 7 varleyata, 4 males 

 and 3 females. 



C. dominula. — 1906 : a yellow female paired with a red 

 male produced all red forms. 1907 : a typical pair of these 

 produced 44, including 10 yellow forms, in 1908. 



Ennomos autumnaria. — 1905: 12 ova obtained from a wild 

 typical female. 1906 : 8 bred, including 2 melanic (one of 

 each sex) ; melanic male paired with type female. 1907 : 

 30 per cent, bred were melanic ; two pairings made — (1) 



