GUELPH FAUNA IN THE STATE OF NEW YORK 157 



Hormotoma whiteavesi sp. nov. 



Page 72 

 FIG. 



5 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). 



