CONCHOLOGY. 
aperture contracted, roundish or crescent-shaped. 
1. Helix serpuloides. Montague, pl, 21. fig. 2 
2. H. elegantissima. Montague, pl. 10. fig. 2. 
—Donovan, pl. 179. fig. 1 
3. H. polita. Brit. Zool. pl. 82, fig. 1.— 
Donovan, p. 172. | 
4, H. lutea. Montague, pl. 16. fig. 6 
5. H.lavigata. Brit. Zocl. pl. 89. fig. 8.— 
Donovan, p. 105. 
6. H. otis. A new species by Dr. Turton. 
NERITA. 
Shell spiral, gibbeus, flattish beneath : aperture 
half orbicular; the pillar-lip transverse, flattish, 
and truncate. 
1. Nerita glaucina. Brit. Zool. pl. 90. fig. 1 
— Donovan, pl. 20. fig. 1 
2. N. canrena. Donovan, p. 167. Nerita 
intricata. 
3. N. littoralis, Brit. Zool. 2 90. fig. 3.— 
Donovan, pl. 20. fig. 2 
A, N, pallidula. Donovan, ei) 16. fig. 1.— 
Da Costa, pl. 4. fig. 4. 5. 
PATELLA. 
Shell more or less conic, and shaped like a basin, 
generally without spire. 
1. Patella vulgata. Brit. Zool. pl. 92. fig. 1. 
— Donovan, p, 14, 
