PLATE XXI. 
1. Pseudomelania procera, Deslongchamps. Subulate and corroded specimen, 
showing striato-punctate structure. Murchisone-zone, Bradford 
Abbas. My Collection (Stephens). (Page 237.) 
2. Huspira, cf. coronata, Morris and Lycett. Northampton Sand, Duston. 
Crick Collection. (Page 270.) 
3. Natica cincta, Phillips, cast, x4. Lincolnshire Limestone, ? Denton. British 
Museum. (Page 266.) 
4. Natica cincta, Phillips, shell, x 3. Coombe Hill, Deddington, Oxfordshire. 
My Collection. 
5. “ Phasianella”? Leymeriei, d@’Archiac, var. Lindonensis. ‘‘ Bastard” bed 
between the Northampton Sand and the Lincolnshire Limestone, 
Lincoln. My Collection. (Page 253.) 
6. Pseudomelania levigata, Morris and Lycett. 2. Scarborough Limestone, 
Cloughton Wyke. Figure compounded of two specimens, one in the 
British Museum (type), the other in my Collection. (Page 244.) 
7. Rissoina obliquata, Sowerby. Xx 4. Lincolnshire Limestone, Weldon. My 
Collection. (Page 272.) 
8. Rissoina obliquata, Sowerby, var. parcicostata. x4. Lincolnshire Limestone, 
Ponton. My Collection. (Page 272.) 
9. Rissoina obliquata, Sowerby, var. inflata. x 4. Lincolnshire Limestone, 
Ponton or Barnack. British Museum. (Page 272.) 
10a. Rissoina obtusa, Lycett. x4. Pea-grit, Crickley. My Collection. 10 d. 
The same specimen, X10. (Page 273.) 
11. Rissoina gymnoides, sp. nov. X 6. Lincolnshire Limestone, Weldon. My 
Collection. (Page 273.) 
12. Amberleya capitanea, Mister. Juwrensis-zone, variabilis-beds, North Nibley. 
My Collection (Buckman). (Page 277.) 
13. Amberleya ornata, Sowerby. Dundry. Bristol Museum; probably one of 
Sowerby’s types—a worn specimen. (Page 279.) 
14. The same. Dundry. My Collection (Wilson)—an unworn specimen from the 
same locality. 
15. Amberleya ornata, Sow., var. spinulosa, Miinst. (Bathis, d Orb). Concavus-bed, 
Bradford Abbas. My Collection. 
16. Amberleya ornata, var. abbas. Concavus-bed, Bradford Abbas. My Collec- 
tion. Middle-sized specimen, showing the Purpurina-like mouth. 
17, 18. Portions of more adult specimens of A. ornata, var. abbas, showing the 
modification of the aperture. Same locality and Collection. (Page 
280.) 
