82 JOURNAL OF CONCHOLOOY. 



The river flows across the desert" for nearly a hundred 

 miles before it reaches the spot where the shells were found, and 

 it is probable that they were carried for this distance from the 

 higher ground where the river takes its rise. 



In Karachi itself I captured a single live specimen — a slug, 

 chocolate brown, three inches long, nearly one broad, faintly 

 carinated along the whole of the back, along which ran a 

 delicate, white, dotted line spreading out at the extremities to 

 more distinct dots. Sole lemon-coloured. The whole body and 

 head enveloped by a broad, overhanging mantle, from under 

 which the tentacles alone protruded. I observed no spiracle, 

 and could find no shell by dissection. Its form was very unlike 

 that of our British slugs, being very flat and broad, a transverse 

 section having the form of a very depressed isosceles triangle, 

 the base being three times the height. The upper surface was 

 smooth, showing a few minute punctiform depressions. My 

 brother suggests that it belonged to the genus Oncliydium. It 

 was doubtless imported with the soil into the private garden 

 where I found it. 



The soil in Karachi is eminently unsuitable for shells, as at 

 a no very remote period the whole district was covered by th 

 sea, and the surface sand is so impregnated with salt that at 

 night it forms a sticky mud when the dew falls. 



CONCHOLOGICAL SOCIETY 

 OF GREAT BRITAIN AND IRELAND. 



PROCEEDINGS, 



199th Meeting, Tuesday, May loth, 1892. 

 Held at the Philosophical Hall, Park Row, Leeds. 

 Mr. John W. Taylor, F.L.S., Vice-President, in the Chair. 

 Library Purchase announced : Razoumowsky, Histoire Naturelle du 

 Jorat, 1789, 2 YoUimes. 



Donations to Library announced and thanks voted : From the 

 respective Editors, Trustees, Societies, and Authors — Naturalist for May ; 

 L'Echange Revue Linneenne, Nos. 73 — 76 and 78—80; Feuille des Jeunes 

 Naturalistes for May ; Records of the Australian Museum, Vol. I, Nos. 4- 



J.C. vii., July, 1892. 



