Zoological Proceedings of Societies. 263 
Art. XXXVI. Proceedings of Learned Societies on sub- 
jects connected with Zovlogy. 
LINNEAN SOCIETY. 
Nov. 3, 1829.—A Description of Filaria Forficule, by Mr. Ben). 
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. Léon 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 branchie, 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 forms 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, KampropTERA, sp. fuscescens, rare in St. Vincents; 
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 in which Mr, Guilding finds so 
