TYPE SPECIMENS OF INFERIOR OOLITE AMMONITES. 



The type specimens of Ammonites concavus, A. murchisonse, A. Ktriatulus, and 

 A. jugosits, originally described and figured l^y tlie Sowerbys in their ' Mineral 

 Concliology,' have already been re- figured and discussed by Mr. S. S. Buckman in 

 his ' Monograph of the Ammonites of the Inferior Oolite Series,' vol. i, published 

 by the Palteonto graphical Society in parts between 1887 and 1907. The type 

 specimens of the other species in the Sowerby Collection are now illustrated by 

 new figures in the accompanying seven plates. It has been deemed useful to 

 reprint the original descriptions for reference. 



It has not been possible to trace the type specimens of Ammonites braikenridgii, 

 A. brongniarti, A. contractus, and A. gerciUii. 



LIST OF PLATES. 



I. — Ammonites lanhsii. 



II. — ,, blag den i. 



III. — ,, „ and A. banhsii, with text-figures of A. soioerbii. 



IV.^ ,, brocchii. 



V. — ,, brodia'i and A. parJdnsoni. 



VI. — ,, Iseviuscidus, A. subradiatus, A. corrugatus, and A. brotvni. 



VII. — ,, humphriesianus and ^4. broclioei. 



Unless otherwise stated, the figures are of the natural size. 



