50 
Transactions of the 
Palate, oo . 5 . 1 . 5 . oo . Median doubtful, but think I have occa- 
sionally seen it, very small; laterals reflexed plain. 1st Inc. claw- 
shaped rugose 2nd, large smooth tooth, sides rugose, others 
similar, diminishing in size and changing to long-curvesd serrated 
teeth, very numerous. Slide in cabinet ot E. M. S. 
Elencus, No. 34. — The base is not so flat as the figure in 
Woodward. Hab., low water ; very rare ; green pearly lustre inside. 
Operculum horny, multispiral. 
Palate, co . 5 . 1 . 8 . oo . Median reflexed, denticulated. Laterals 
with ovate teeth, denticulated ; bases overlapping at sides. Uncini 
hooked, very numerous. Specimen in cabinet of E. M. S. 
Trochocochlea, No. 2. — Hab., rocks between tide marks. The 
common periwinkle, gathered with No. 8, as the same. Shell with 
rugose longitudinal furrows, marked in larger specimens similar to 
T. zebra, which this may be. Inner lip with a slight tooth. Oper- 
culum horny, concentric. 
Palate, oo . 5 . 1 . 5 . co . Median reflexed ; laterals, upper portion 
reflexed, ligulate, denticulated ; bases broad, overlapping. Uncini 
hooked, serrated ; very numerous. Specimen in cabinet of E.M.S. 
Monodonta (?), No. 8. — Hab., rock between tide marks. The 
difference between this and Trochocochlea is in being smooth, no 
furrows, and a rather flatter shell. Foot of animal is much longer. 
Operculum concentric, horny. Inner lip with a slight tooth. 
Sometimes bears Limpet, No. 30, as a parasite. 
Palate, co . 5 . 1 . 5 . oo . Median longer than Trochocochlea ; 
laterals have a smooth central tooth ; bases overlapping at sides. 
Unc. hooked, serrated; very numerous. Specimen in cabinet of 
E. M. S. 
Monodonta (?), No. 32. — Small flat periwinkle with calcareous 
subspiral operculum. Hab., rocks and seaweed below low water ; 
rare ; only found on one occasion. Shell flatter than the previous 
two, with wavy, transverse, slightly-elevated ridges. 
Palate, co . 5 . 1 . 5 . co . Similar in character to Turbo and Phasia- 
nella ; median indexed at top and sides ; laterals reflexed, with very 
broad, wrinkled, overlapping bases. Unc. with large teeth gradually 
diminishing, and changing into hooked, serrated teeth; very 
numerous. Specimen in cabinet of E. M. S. 
Monodonta, No. 33. (Monodonta ?). — Small periwinkle, rough, 
longitudinally granulated ; rare ; only found on one occasion. 
Operculum horny, concentric. Hab., seaweed on rocks below low 
water. 
Palate small, oo . 5 . 1 . 5 . co . Median reflexed, denticulated, 
with very broad, expanded base ; laterals the same, with overlapping 
