On the Fossils of a Boulder-clay in Caith ness* 
41 
List of Fossils. 
Univalves. 
Trophon scalariformis 
Buccinum undatum 
Nassa incrassata 
Purpura lapillus 
Mangelia Trevelliana 
turricula 
Natica nitida 
sordida 
helicoides 
Aporrhais pes-pelicani 
Turritella communis 
Trochus Zizyphinus 
Patella vulgata 
Dentalium entalis 
abyssorum (N.S. Sars) 
Bivalves. 
Pecten maximus 
opercular! s 
Leda caudata 
Cardium echinatum 
edule 
Norvegxcum 
Cyprina Islandica 
Astarte arctica 
compressa 
elliptica 
Astarte sulcata 
Artemis lincta 
Tellina proxiraa 
solidula 
Mya truncata var, Uddevallensis 
Panopea Norvegica 
Saxicava rugosa, var. 
Balanid^. 
Balanus Scoticus (porcatus) 
Annelida. 
Serpula vermicularis 
Polyzoa. 
Hippothoa catenularia 
Membranipora 
Lepralia Peachii 
simplex 
Sponges. 
Geodia 
Cliona celata 
Alg^. 
Nullipora (Melobesia) polymor- 
ph a 
Recapitulation of Species. 
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, HI. F 
