140 
Modiola modiolus, not common. 
Sphsenia Binghami, a good number of smallish specimens. 
Trochus Lyonsii, a well marked variety of T. zizyphinus. 
Dentalium tarentinum, from Holyhead. 
Patella athletica, rather common. 
Natica nitida, far from common. 
Odostomia acuta (Jeff.), two specimens of a dull white 
variety, distinctly umbilicated— vide Brit. Mol. 
V. 3, p. 270. 
Sepia bisserialis, Towyn Capel, Defarh bays. Mrs. Plant 
found four of these beautiful and rare shells 
after very stormy weather, in August, 1 873. 
