KONGL. SV. VET. AKADEMIENS HANDL. BAND. 19. N:0 6. 197 



3. Onychocliilus? cocMeatum n. 



PI. XVIII fig. 54—57. 



Shell small, narrow, sinistral, elongately turriculate. The fragmentary specimens 

 have only live whorls left. These whorls are short, depressed, nearly disciform, with 

 an acute ridge around their median line and another ridge on the umbilical side. 

 Transverse lines, regularly distantiated, cross these ridges in a highly acute angle. To 

 judge by the fragments the coluraellar side of the aperture has been narrow and cur- 

 ved and the umbilicus open and wide. H. 6 mill., br. 4 mill. 



From the limestone beds of Slite and Sandarfve. 



