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. 
