JOURNAL OF PROCEEDINGS. IxXV 



Mons. le Senateur Van Heyden, of Frankfort on the Maine ; and 

 Dr. Maximilien Perty, Professor of Natural History at Berne ; 

 were elected Foreign Ordinary Members of the Society. 



Exhibitions, Memoirs, &c. 



The Secretary exhibited several nests of different species of insects 

 from the Cape of Good Hope, showing in a remarkable manner the 

 instinctive powers of these creatures. In one, which was about six 

 inches long, and |ths of an inch in diameter, the surface was defended 

 by twigs, arranged longitudinally, occupying the entire length of 

 the nest. In the other the outer coat was formed of a very beautiful 

 covering of lace work. These nests were considered as formed by 

 the larvae of Lepidopterous insects. 



The Secretary also exhibited several species of the singular Neu- 

 ropterous genus Nemoptera, Latr., from the Cape of Good Hope, 

 allied to A'^. africana of Leach. Their characters being shortly 

 noticed as follows : 



Nemoptera africana. Leach. — Alis anticis ad apicem rotundatis, 

 hyalinis, stigmate albo, nubila terniinali fuscescenti, costa immacu- 

 lata ; posticis ad basin, antennisque pallidis. 



Nemoptera costalis, Westw. — Alis anticis ad apicem rotundatis, 

 hyalinis, stigmate nigro nubila terminali alba, costti maculis parvis 

 fuscis ; posticis ad basin fuscescentibus, antennis pallidis. 



Nemoptera angulatn, Westw. — Alis anticis ad apicem acutis, hya- 

 linis, stigmate nigro, costa maculis parvis fuscis ; posticis ad basin 

 fuscescentibus ; antennis elongatis fuscis. (An mas prsecedentis ?) 



The following Memoirs were read : 



" Description of a new genus of Longicorn Beetles, named Torneu- 

 tes, from South America." By Dr. Reich, of Berlin. 



Extract of a Letter from W. B. Spence, Esq., giving an account 

 of the successful attempts made by himself to exclude flies from 

 apartments at Trieste, upon the plan described by his father in the 

 first Part of the Transactions of the Society. The writer states that 

 as he could not easily procure a net, he contented himself with 

 driving in nails all around the window-frame, and then putting cross 

 threads, about an inch or rather less distant from each other. The 

 consequence of which was, that although the other rooms in the house 

 were almost intolerable, his had not a fly in it, provided he took care 

 to keep the door shut ; he kept all the windows closed except the one 

 which had the netting, and which looked into the garden, and when 

 the sun was on it he was visited with abundance of flies on the out- 

 side, though none dared to intrude. Their favourite haunt was on 



