( xv ) 
the rainy-season form being of darker coloration, and larger 
than that occurring in the dry season. The ground colour of 
the former on the under surface was markedly white, with 
deep black strie; in the latter form the ground colour was 
distinctly reddish, and the marking reduced to reddish lines. 
He said that the latter form had been described as L. alteratus. 
Mr. F. Merrifield mentioned that Dr. Weismann, as appeared 
by his work on ‘The Germ Plasm,’ just published, had been 
engaged in temperature experiments upon Chrysophanus 
phlwas, the general results of which, so far as stated, corres- 
ponded with those obtained by him. Dr. Weismann’s experi- 
ments, however, had established that the difference in the 
colouring of phicas in different climates or seasons, though in 
part attributable to the temperature to which the individual 
had been exposed, was in part constitutional. 
Mr. S. G. G. Russell exhibited a beautiful variety of 
Argynnis selene, taken near Fleet, Hants; two varieties of 
A. selene from Abbot’s Wood, Sussex; typical specimens of 
A. Selene and A. euphrosyne for comparison ; and a remarkable 
variety of Pieris napi from Woking. 
Mr. C. J. Gahan exhibited a microscopic preparation of the 
antenna of the larva of a beetle (Pterostichus), for the pur- 
pose of demonstrating the sensory nature of the so-called 
‘‘appendix” of the antenna. Since he wrote a note describing 
this structure, a short time ago, he found that Professor 
Beauregard had already suggested its sensory character, and 
was inclined to believe that it was an auditory organ. 
Mr. H. Goss exhibited a specimen of Trogus lapidator, Grav., 
believed to have been bred from a larva of Papilio machaon 
taken in Norfolk by Major-General Carden. Mr. Goss stated 
that he sent the specimen to the Rev. T. A. Marshall, who 
said it was a well-known parasite of P. machaon on the 
Continent, but not proved to exist in the United Kingdom. 
Mr. Merrifield said he knew this parasite, and had bred 
several specimens of it from pupe of P. machaon received 
from Spain. 
Papers read. 
Colonel Swinhoe read a paper entitled ‘‘ The Lepidoptera 
of the Khasia Hills. Part I.” A long and interesting dis- 
