297 



4. Helix Polyzonalis — Madagascar ? f 



6. Helix ? — Allied to H. Ungulina and H. Oculus. 



6. Lymnsea Columna — Isle of Princes. 



7. AmpuUaria Corrugata — Madagascar. 



8. Trochus Turbinatus — Isle of Princes. 



9. Nerita Atrata — Do. 



10. Neritina Puligera — Do. 



11. Neritina Corona — Mozambique. 



12. Turbo Muricatus — Isle of Princes. 



13. Cyprsea Moneta — Africa. 



14. Patella Lacustris — Kafferland. 



16. Patella Longicosta — Simon's Bay, Cape of Good Hope. 



16. Patella Monopis — Do. 



17. Patella Granatina — Do. 



18. Crepidula Porcellana— Cape of Good Hope. 



19. Voluta Volvacea — Africa. 



20. A small Ecbiuus— Do. 



4. There "was Jilso presented by Professor Forbes, on the part 

 of R. S. G. Kilbee, Esq., a collection of Fossil Shells, 

 from the great deposit near Uddevalla, in Sweden. 



This bed lies from 200 to 300 feet above the level of the sea, 

 an arm of which extends to that town, but no shells are to be 

 found upon its shores. It covers a space of several square miles, 

 and is coate4 with soil, which in many places has been removed, 

 the shells being taken to mend the roads, as well as for building' 

 purposes, and for manure. Such openings upon the surface are 

 frequent on the hill just above the town, on the road to Gotten- 

 burg ; but a mile or two on that to Wennersburg, and to the 

 left, there is a large vertical opening, exposing to view from 

 thirty to forty feet of the bed's depth, its entire depth being as 

 yet unknown. 



The mass of shells may be described as hard packed or pressed 

 together, yet no where consolidated, nothing like order or ar- 

 rangement being perceptible, — neither lines, veins, bands, nor 

 strata, alike from top to bottom, no earth, sand, or stones inter- 

 spersed. 



The species pecten predominates. Many of the mussels have 

 strange forms; the mass is free, and is easily separated; many 

 shells are already broken into fragments of every size, others 

 delicate and yield to a slight pressure, while others again are 

 fresh and hard, and clink as sharply as recent shells. 



