Zoologiml Proceedings of Societies. 



Art. XXXVI. Proceedings of Learned Societies on sub- 

 jects connected ivith Zoology. 



LINNEAN SOCIETY. 



J^ov. 3, 1829. — A Description of Filaria Forficulte, by Mr. Benj. 

 Maund, F.L.S., was read. Mr. Maund states that sometimes two or three 

 of these worms, each of them measuring not less than two or three inches 

 in length, are found in an individual Earwig, filling the whole cavity of the 

 abdomen, and sometimes a part of the thorax also. His specimens, one 

 of which accompanied the communication, lived two or three hours in 

 water, after being removed from the insect, but died immediately in 

 atmospheric air. It is unnecessary to go into any further details on this 

 subject, the animal in question having been already well described and 

 figured by M. Leon Dufour in the thirteenth Volume of the Annales des 

 Sciences Naturelles. It is probably indicated under the same name as 

 that employed both by M. Dufour and Mr. Maund, by Rudolphi in his 

 work on the Entozoa. 



Feb. 2, 1830. — A paper was read, on The Natural History of Petro- 

 phila, a Lepidopterous genus, in its larva state inhabiting rivers, and 

 furnished with branchicB, by the Rev. Lansdown Guilding, B.A., F.L.S., 

 &c. The authour states that the very singular little moth on which he 

 establishes his genus occurs in myriads, in its larva state, on the blocks 

 of basaltic trap that occupy the bed of the river of St. Vincent's. Much 

 as it differs in its habits from the majority of Lepidoptera, he considers 

 one European species as coinciding with it in its economy, and referrible 

 perhaps to the same subgenus of Botys ; a genus which, from the variety 

 of lorras of which it is at present composed, appears to him to call for 

 subdivision. He indicates the following as the most remarkable types 

 occurring in his own Cabinet: 1, Chloephila, sp. lineolata, found at 

 St. Vincent's ; 2, Kamptoptera, sp. fuscescens, rare in St. Vincent's ; 

 and 3, Phakellura, sp. hyalinata (Fabr. Ent. Syst. ij, 2, 213 .') 

 abundant in the Antilles. The Botys stratiotalis (Kirby and Spence, 

 IV, 56, 74) is the European species m which Mr. Guilding finds so 



