PLATE XXXII. 



N.B. 1. All figures, except figs. 3 a, 3 b, 13, and 186, are drawn from photographs. 

 N.B. 2. All specimens are from my Collection unless otherwise stated. 

 N.B. 3. The majority of the figures are magnified a little over two diameters. 

 Fig. 



1. Trochus subduplicatus, d'Orbigny, var. Abbas. Goncavus-bed, Bradford Abbas. 



Back and front. (Page 377.) 



2. Trochus subduplicatus, var plicata, Goldf. Dumortieria-beds, foot of East 



Cliff, Bridport Harbour. Back and front. (Page 376.) 

 3 a, 3 b. Trochus monilitectus, Phillips. Scarborough Limestone. Bean Coll., 

 British Museum. Back and front. (Page 380.) 



4. Trochus substrigosus, sp. nov., incomplete form, say T. " nemoralis " by way of 



distinction. Parkins oni-zone, Grove. Front and back. (Page 384.) 



5. Trochus squamosior, sp. nov. Base of Lincolnshire Limestone, Lincoln. 



Back. (Page 382.) 



6. Trochus subluciensis, sp. nov. Oolite-Marl, Nailsworth Hill. Front and base. 



(Page 381.) 



7. The same ; larger and coarser form. Irony Nodule-bed, Burton Bradstock. 



Back. 



8. Trochus squamiger, Morris and Lycett. Freestones of the Oolite-Marl, 



Nailsworth Hill. Base and front. (Page 382.) 



9. Trochus vicinus, sp. nov. Lincolnshire Limestone, Weldon. Front and back. 



(Page 383.) 



10. Trochus Dunkeri, Morris and Lycett, var. Weldonis. Lincolnshire Limestone, 



Weldon. Front and back. (Page 383.) 



11. Trochus substrigosus, sp. nov. Parkinsoni-zone, Burton Bradstock. Front 



and back. (Page 384.) 



12. Trochus Burtonensis, Lycett; Inferior- Oolite variety. Parkinsoni-zone, 



Horton Hill. Front and back. (Page 385.) 



13. ? Trochus Leckenbyi, Morris and Lycett. Scarborough Limestone. Leckenby 



Collection, Woodwardian Museum. Back. (Page 386.) 



14. Trochus biarmatus, Miinster. Parkinsoni-zone, Grove. Back and front. 



(Page 386.) 



15. Trochus marga, sp. nov. Parkinzoni-zone, Burton Bradstock. Front and 



back. (Page 387.) 



16. Trochus " subimbricatus." Lincolnshire Limestone, Weldon. Front and back. 



(Page 388.) 



17. Trochus Bixa, d'Orbigny. Irony Nodule-bed, Burton Bradstock. Front. 



(Page 388.) 

 18 a. Micromorph of ? Trochus Niortensis, d'Orb. Pea-grit, Crickley. Back. 

 18 b. The same X 10. (Page 388.) 



