GUELPH FAUNA IN THE STATE OF NEW YORK 



157 



FIG. 



5 



Hormotoma whiteavesi sp. nov. 



Page 72 



Last volutions of a very large individual with strongly marked 

 sculpture of the surface and slit band 

 6 A younger, very slender specimen, showing the strongly 

 recurving growth lines 

 7, 9 Two views of a nearly complete specimen in solid chert with 

 very faint indications of the growth lines and slit band 

 8 View of a very large example, showing the long, narrow, 

 prolonged aperture 

 All specimens are drawn natural size, and are from the 

 Guelph beds at Rochester (Arey collection). 



