64 



J. BTJCKMAN ON AMMONITES FROM THE 



species occurs in a marly limestone which is replete with grains of 

 iron ochre. It is from Bayeux, in Normandy " *. 



Fig. 5. — Termination of Ammonites Brongniarti, Sow. 



10. A. Beongniarti, Sow. t. 184 A, fig. 2; D'Orb. pi. 137. 

 figs. 1-5. (Fig. 5.) 



The lip of this shell is so decidedly distinct from the preceding that 

 we cannot help separating them, although we at one time inclined 

 to a different opinion. It is not at all so complicated, hut is of a 

 semilunar or, rather, semicircular shape, with a deep depression be- 

 neath, but without the elaborate form of the lip of A. Gervillii. It- 

 is met with at Bradford Abbas and other places near Sherborne. 



11. A. Manselii, Buekman, n. sp. 



Is perhaps related to the A.-Broccldi group ; but the fineness of its 

 ribs and the absence of tubercles is a sufficient distinction. We 

 have in one single example the usual deep depression before the 

 terminal semicircular depression. We possess several examples of 

 this shell from Bradford, Chalcombe, and other places ; but only the 

 one sent is an example of the termination. 



12. A. Humpheiesiantjs, Sow. t. 500. fig. 1 ; D'Orb. pi. 133 & 134. 

 (Fig. 6.) 



This is a very variable shell, sometimes having few (perhaps five) 

 thick whorls, at others from eight to ten, exceedingly slender and 

 delicate ; yet the markings are the same, and the termination of both, 

 starting from a deeply contracted furrow, is simply semilunar in 

 shape, and is the same in both large and small examples. 



This is a common shell about Sherborne, but is rarely met with 

 at Bradford or Halfway House. 



* Sowcrby, Min. Conch, vol. ii. p. 190, 



