THE NATURALIST, 1909. 



Plate XIV. 



(i) Am. falcifer, Sow. sp. (Harpoceras falciferiim). (Nearly natural size ; 

 diameter should be 58 '5 m.m.) 



(2) Am. strangwaysi, Sow. sp. [Havpoceras straiigwaysi). (Reduced to 

 about f nat. size). 



From photographs of Sowerby's original type specimens supplied by 

 Dr. A. mith Woodward. 



"Am. mulgravius." I?) (Of collectors). Also wrongly named by 

 many "Am. seypentinus." r 



The adult Haypoceras falcifeyum of the foregoing paper. From 

 photograph of Yorkshire specimen in Hull Museum, supplied by Mr. 

 Sheppard. (Reduced to about I nat. size). 



