PLATE XXVIII. 
N.B.—All figures, except figs. 16, 17 b, and 18 b, are from pencil drawings. 
Fig. 
la, 1b, le. Neritopsis varicosa, Morris and Lycett. Oolite Marl, Nailsworth. My Collection 
(Wright). Front, back, and apical x 2. (Page 341.) 
2. Neritopsis incisa, sp. nov. Base of Lincolnshire Limestone, Swan’s Brickyard, Lincoln. My 
Collection. Back x 2. (Page 342.) 
3a, 3b, 3e. Neritopsis cf. Hebertana, d’Orbigny. Stoford. My Collection. Back, front, and 
apical x 2. (Page 343.) 
4, Neritopsis cf. sulcosa, d’Archiac, or ? a modified form of N. Philea, d’Orb. Pea-grit, Crickley. 
My Collection. Back x 2. (Page 344.) 
5a,5b,5e. Neritopsis ct. decussata, Minster. Base-bed, Lincoln. Back, front, and apical 
x 2. (Page 342.) 
6a, 6b. Nerita costulata, Deshayes (Nerita costata, Sow.). Variety from the Scarborough 
Limestone, White Nab. Herries Collection. Back and apical x 2. (Page 832.) 
7,8, 9. Merita pseudocostata, d’Orbigny. Dogger, Blue Wyke. Leckenby Collection. Three 
specimens showing different aspects, each x 2. (Page 333.) 
10. “ Neritopsis lxvigata.” Dogger, Blue Wyke. Jermyn Street Museum. Front x 2. 
(Page 344.) 
lla,116. Nerita (Neridomus) near to ovata, Romer (cf. also Meritina Cooksonii, Deslongchamps). 
Pea-grit, Crickley. My Collection. Front and back x 2. Ile. Portion further 
enlarged to show colour markings. (Page 336.) 
12a, 126. Nerita (Neridomus) tumidula, Phillips. Dogger, Blue Wyke. My Collection. Front and 
back x 2. (Page 335.) 
13 a, 186. Pileolus plicatus, Sowerby, var. A. Base-bed, Lincoln. My Collection. Apical and side 
x 8. (Page 337.) 
14a, 146, 14c. Pileolus plicatus, Sow., var. B. Same locality and Collection. Apical, side and 
base x 3. (Page 337.) 
15a, 156, 15c. Pileolus levis, Sowerby. Inferior Oolite variety. Same locality and Collection. 
Apical, side and base x 3. (Page 338.) 
16. Section of Pileolus to show the columellar septum. Base of Lincolnshire Limestone, Lincoln. 
My Collection. Section x 3. (Page 337.) 
17 a, 17 6. Crossostoma ef. Prattii, Morris and Lycett. ? Irony Nodule-bed, Burton Bradstock. My 
Collection. Front and back x 14. (Page 346.) 
18a,18b. <Ataphrus cf. lucidus, Thorent. Freestones of the Oolite Marl horizon, Nailsworth Hill. 
My Collection. Front and back x 1}. (Page 348.) 
