183 



Art. XIV. — Entomological Society. 



Third Sitting. — January 6. 



The Secretary read a paper by Mr. Lewis, on Y2)ono7nenia 

 padella. Mr. Lewis states that the larvce are hatched in the 

 autumn, but remain under the cover with which the eggs are 

 enveloped, till the spring ; that on first issuing from this they 

 become mining larvcB, and do not spin their web till they have 

 attained a considerable size. 



The Secretary read a paper by Mr. Waterhouse, descriptive 

 of several larva. Raphidia, Mr. Waterhouse has ascertained, 

 has an active pupa, as was formerly supposed, not quiescent, 

 as has lately been stated by M. Percheron, in Guerin's 

 Magasin de Zoologie, and as was repeated in our last number. 



The Secretary read a notice by Mr. Westwood, on the 

 entomological affairs of the Linnaean Society. 



Mr. Newman read a technical description of Ripipteryx, 

 a new genus of Orthoptera. Mr. Newman continued : — The 

 only insect with which I am at all acquainted, that is allied 

 to Ripipteryx, is the genus Tridactylus of Latreille, but 

 from this, however, it is sufficiently distinct. Of the economy 

 and history of this latter genus, Tridactylus, M. Foudras, 

 of Lyons, has lately furnished us with a most complete and 

 interesting account. In the south of France it appears that 

 the Tridactyli inhabit the sandy banks of large rivers, which 

 in the summer have been left bare by the diminution of the 

 water : as the water retreats they constantly follow it, always 

 keeping within the limits of its moisture, and if grass, or any 

 vegetable, begins to cover the sand with a coat of verdure, 

 instantly quitting it. They form galleries in the sand, in 

 the same manner as mole-crickets ; but what appears most 

 remarkable is, that their food consists of nothing but sand. 

 M. Foudras captured and confined many specimens, and 

 watched them whilst engaged in feeding. He killed and 

 dissected many specimens, and found in the oesophagus, and 

 throughout the alimentary canal, no other substance but sand, 

 which was moreover the only ingredient of the excrement.. 



The Rev. F. W. Hope exhibited some specimens of Ter- 

 mites, or white ants, and Xylocopce, or wood-boring bees. 



