PLATE VII. 

 Pig. 

 1 a. Alaria Pontonis, sp. nov. Lincolnshire Limestone, Great Ponton. My 



collection. (Page 135.) 

 1 b. The same. Another specimen, front view. Same locality and collection. 



2. Alaria Pontonis, var. spinifera. Lincolnshire Limestone, Great Ponton. My 



collection. (Page 136.) 



3. Alaria primigenia, sp. nov. P^, Vitney Cross. My collection. (Page 137.) 



4. Alaria spinigera, Lycett. I. 0., Nailsworth. Jermyn Street Museum. (Page 



138.) 



5. Alaria solida, Lycett. I. 0. Cotteswolds. Jermyn Street Museum. (Page 



139.) 



6. Alaria solida, Lycett, var. I. 0. (? Oolite Marl), Crickley. Brodie collection. 



(Page 140.) 

 7 a. Alaria hamoides, sp. nov. Lincolnshire Limestone, Great Ponton. My col- 

 lection. (Page 140.) 



7 b. The same. Another specimen. Lincolnshire Limestone, ? Great Ponton. 



Sharp collection. 



8 a. Alaria {? Diartema) varicifera, sp. nov. Lincolnshire Limestone, Great 



Ponton. Sharp collection. (Page 141.) 

 8 b. Diartema varicifera. L. L., Great Ponton. My collection. (Page 141.) 

 8' a. ? The same. The usual form in the L. L. of Weldon. My collection. 



(Page 141.) 

 8' b. ? The same. An exceptional form in the L. L. of Weldon. My collection. 



(Page 141.) 

 9. Alaria hamus, Deslongchamps. I. 0., ? Dorsetshire. Whidborne collection. 



(Page 113.) 



10. Alaria Boubaleti, Schumberger, var. Dorsetensis. I. 0., Bradford Abbas. 



Buckman collection. Specimen showing the character of the digitation 

 and canal-sheath, but without the spines. (Page 123.) 



11. Alaria pinguis, sp. nov. Parkinsoni-zcme, Vitney Cross. My collection. 



(Page 117.) 



12. Brachytrema binodosum, sp. nov. Lincolnshire Limestone, Great Ponton. 



My collection. (Page 99.) 



