On the Fossils of a Boulder-day in Caithness, 



41 



List of Fossils. 



Univalves. 

 Trophon scalariforaiis 

 Buccinura undatum 

 2Sassa incrassata 

 Purpura lapillus 

 Mangelia Trevelliana 



turricula 

 Xatica nitida 



sordida 



helicoides 

 Aporrhais pes-pelicani 

 Turritella communis 

 Trochus Zizjphinus 

 Patella vulgata 

 Dentalium entalis 



abyssorum (N.S. Sars) 



Bivalves. 

 Pecten maximus 



opercular! s 

 Leda caudata 

 Cardium echinatum 

 edule 



Norvegicum 

 Cyprina Islandica 

 Astarte arctica 



compressa 



elliptica 



Astarte sulcata 

 Artemis lincta 

 Tellina proxima 

 solidula 



Mya truncata var. Uddevallensis 

 Panopea Xorvegica 

 Saxicava rugosa, var. 



Balanid r.. 

 Balanus Scoticus (porcatus) 



Annelida. 

 Serpula vermicular is 



POLYZOA. 



Hippothoa eaten ularia 

 Membranipora 

 Lepralia Peach ii 

 simplex 



SPONGE3. 



Geodia 

 Cliona celata 



Alg.e. 



Nullipora (Melobesia) polymor- 

 ph a 



Recap itula Hon of Spec ies. 



15 Univalves, 17 Bivalves. 1 Balanus; 1 Annelide ; 4 

 Polyzoa ; 2 Sponges ; 1 Coral ; 1 Alga. — Total, 42 species. 



Of the 32 Shells, 29 are British; 2 Scandinavian; 1 Arctic. 

 All the other objects are British. 



Several members stated that, after long-continued exa- 

 mination, they had been quite unable to discover any or- 

 ganisms in the true Boulder-clay. 



They were all well aware of the very correct character of 

 Mr Peach's explorations, still they could have wished he had 

 been a little more explicit in his details of the clay-beds, 

 and the exact localities in which the various organisms 

 described by him were found, 



vol. in. f 



