LINNEAK SOCIETY OF LONDOIS". II 



one band to Helix aspersa, O. F, Miill., and on the other to 

 Otala vermictdata (0. F. Miill.), both common Lusitanian forms. 

 The Rev. E. H. Bowell having examined the anatomy of the 

 animal itself, found that its radula partook of an intermediate 

 character, showing affinities to the species named above, and the 

 absence of certain organs argued its hybridit)'. 



A discussion followed, in which the following took part : — 

 Prof. Poulton, Mr. Alfred Santer Kennard (visitor), and the 

 Treasurer. 



Eev. R. AsHiis'GTON Bullen also exhibited new engravings, 

 enlarged 12 diameters, of Hygromia montivaga, AVesterlund. This 

 land-mollusc was found at Harlyn Bay, Cornwall, in 1902, in a 

 prehistoric cemetery of late Keltic date. He had found about 40 

 specimens in all. It is a member of the Lusitanian fauna, and, so 

 far, only found in England in the above locality. The exhibitor 

 adduced evidence to show that it was certainly of pre-Eoman date 

 (dying out in the early Iron Age), he having obtained it from a 

 probably Pleistocene horizon in previously undistui'bed brown 

 sandy clay, the upper disintegrated layer of the Ladock Beds 

 (Devonian Slates). The place where he so found it had not been 

 dug into for the purpose of burial. It also occurred in the 

 brown sand in which the late Keltic burials were placed, but not 

 in the 12 or 13 feet of bright shell-sand beneath the top soil and 

 above the interments, Roman remains (a coin of the younger 

 Faustina) had occurred in the neighbourhood no deeper than 

 plough-depth. 



The following joined in the discussion upon this exhibition : — 

 Prof. Dendy, Sec.L.S., Mr. A. S. Kennard (visitor), the Treasurer, 

 Mr. J. C. Shenstoue, Mr. Hugh Findon, Dr. Otto Stapf, Sec.L.S., 

 Mr. F. N. Williams, Dr. Marie Stopes, and Prof. Poulton, the 

 exhibitor replying. 



The G-eneral Secretary brought forward a communication from 

 Herr Paul Scheedlin, as follows : — 



" For hundreds of years pigeons have nested on the spire of 

 Strassburg cathedral. They increased so much that many attempts 

 have been made to extirpate them, but in vain. During the last 

 few years there has been a sudden and startling diminution iu the 

 number of these cathedral pigeons. 



" I am of opinion that this manifest reduction is due to the 

 asphalting of the streets round the cathedral. Between the stone 

 sets of the pavement the pigeons were able to pick up food in 

 quantity. In consequence of the asphalting, and daily \^atering 

 and cleansing of the places in the immediate neighbourhood, the 

 birds have gone. 



",Has a similar case been observed elsewhere ? " 



The Rev. R. Ashington Bullen, Prof. Dendy, Mr. Henry Bury, 

 and Mr. Charles Oldham (visitor) spoke on the subject, — the last 



