PLATE XXIX. 



N.B. 1. About half the figures are drawn from photographs, more or less enlarged. 

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



Fig. 



1. ? Turbo Igevigatus, Phillips. Lincolnshire Limestone, Weldon. Front and back 



X 2\. (Page 354.) 



2. Turbo " paludinoides." Concavus-bed, Bradford Abbas. Back and front. 



(Page 355.) 



3. Turbo (? Ataphrus) Lindecolinus, sp. nov. Base of Lincolnshire Limestone, 



Lincoln. Front X 2£. (Page 355.) 



4. The same (another specimen). Same horizon and locality. Back X 2^. 



5. Ataphrus Igevigatus, Sowerby. Concavus-bed, Bradford Abbas. Front and 



back X If. (Page 349.) 



6. The same ; variety approaching Ataphrus Belus, d'Orb. Lincolnshire Lime- 



stone, Weldon. Front and back X If. 



7. Ataphrus obtortus, sp. nov. Inferior Oolite, Beaminster. Front and back 



X If. (Page 350.) 



8. The same. Burton Bradstock, horizon unknown. Back and front X If • 



9. Ataphrus Labadyei, d'Archiac. Bradford Abbas, ? Concavus-hed. Front and 



back X If. (Page 350.) 



10. The same ; wider-angled variety. Pea-grit, Holcomb. Front and back X If . 



11. Ataphrus Acmon, d'Orbigny ; wide-angled variety. Parlcinsoni-zone, Burton 



Bradstock. Front and back X If. (Page 351.) 



12. The same; Neritoid variety. ParJdsoni-zoue, Burton Bradstock. Front and 



back X If. 



13. The same; variety from Hook Norton, approaching Monodonta papilla, Heb. 



and Desl. Front X 2. 



14. Ataphrus Acis, d'Orbigny {? Trochus Ibbetscmi, Morris and Lycett). Burton 



Bradstock, probably from the Parkinsoni-zone. X If- (Page 352.) 



15. " Trochus" attrochus, sp. nov. Concavu s-bed, Bradford Abbas. Front X 4£. 



(Page 390.) 



16. The same ; variety from Beaminster. Front X 4£. 



17. Monodonta pisolitica, sp. nov. Pea-grit, Leckhampton. Front and back 



X 2i (Page 356.) 



18. ? The same; specimen modified by age. Same horizon and locality. Front 



and back X 2^. 



19. Turbo Hamptonensis, Morris and Lycett. Bradford Abbas. Back X 2|. 



(Page 359.) 



20. The same. Inferior Oolite, Hook Norton. Front X 2\. 



