SOME NEW DEVONIC FOSSILS 151 



sculpturing consisting of a series of low subcircular depressions 

 in transverse rows separated by elevated surfaces which may take 

 on the form of short convex pillars. This ornament is only about 

 the middle of each face ; toward the edges it fades away or is re- 

 placed by fine longitudinal puckers starting with the upper slope 

 of a transverse ridge and passing down the slope and part way 

 across the interspace. 



Lower Devonic. Loose at Peninsula, P. Q. 



Conularia desiderata Hall var. tuzoi no v. 



This is a large shell having the surface characters similar to 

 those of C. desiderata, that is, consisting of fine transverse 



Conularia desiderata var. tuzoi 



lines bending backward at the center and bearing extremely ob- 

 scure tubercles visible only when the preservation is exceptional. 

 Unlike C. desiderata the shells bear evidence of a faint median 

 vertical but not interrupting line on each face. 

 Loiver Devonic. Perce rock, P. O. 



GASTROPODS 



Platyceras leboutillieri nov. 



Shell small, erect, apex minute not exsert; minutely coiled for 

 one and one third volution, then abruptly expanded with a spiral 

 twist, the body whorl being erect and subcylindrical and the total 



