﻿PLATE XXIV. 



Fig. 



1. Littorina sedilis, Munster. X 2. Dimdry. Bristol Museum. (Page 298.) 



2. Littorina ? sedilis, Munster. X 3. Lincolnshire Limestone, Ponton or 



Barnack. British Museum. 



3. Littorina Dorsetensis, sp. nov. — var. A, typical. X 2. (Page 299.) 



4. The same, var. B, resembling Trochus granarius, Hebert and Deslong- 



champs. X 2. 



5. The same, var. 0, eucycloid variety. X 1\. All from the Goncavus-bed, 



Bradford Abbas. My Collection. 



6. Littorina, {? Trochus) recte2)lanata, Tawney. X 1^. Dundry. Bristol Museum. 



(Page 300.) 



7. The same. Pea-grit, Longfords. X 1^. My Collection. N.B. — Fig. 6 repre- 



sents a worn specimen, fig. 7 a well-preserved and much larger one. 



8. Littorina prseior, Goldfuss. Murchisonse-zone, Bradford Abbas. My Collec- 



tion (Buckman). (Page 294.) 



9. Littorina (? Trochus) pisolitica, sp. nov. X 6. Pea-grit, Leckhampton. My 



Collection. (Page 300.) 



10. Amberleya cygnea, sp. nov. (but cf. Turbo Meriani, Goldf.). "Base-bed," 



Lincoln. My Collection. (Page 283.) 



11. Amberleya, {Turbo) Dundriensis, Tawney. X 3. Dundry. Bristol Museum. 



(Page 293.) 



12. Hamusina Damesi, Gemmellaro, var. Babylonica. Murchisonse-zone, Babylon 



Hill. Whidborne Collection. (Page 304.) 



13. Hamusina Oppelensis, Lycett, Dorset variety. Murchisonse-zone, Coker. My 



Collection. This specimen shows the single row of nodules as distin- 

 guished from the double row in Hamusina Bertheloti, d'Orb. (Page 

 305.) 



14. The same. ? Upper Pisolite, Longfords. Jermyn Street Museum. N.B. — 



Type refigured to show the supposed costse which are really due to an 

 imperfect and misleading surface. 



15. Cirrus Etheridgii, Lycett. Nailsworth district. Jermyn Street Museum. 



X 1£. (Page 306.) 



16. Cirrus " reticnlatus ;" may possibly represent Cirrus Etheridgii in the 



Dorsetshire beds, Bradford Abbas. Monk Collection. (Page 307.) 



17. Cirrus gradatus, sp. nov. Murcldsonse-zone, Coker. My Collection. (Page 



307.) 



18 and 19. Cirrus pyramidalis, Tawney . Dundry. Bristol Museum. The types 

 refigured. (Page 311.) 



20. Cirrus pyramidalis, Tawney. Cotteswold variety. Longfords. My Col- 

 lection. 



