KONGL. SV. VET. AKADEMIENS HANDL. BAND. 19. N:0 6. 183 



2. Craspedostoma elegantulum n. 



Pl. II fig. 58, pl. XXI fig. 20—29. 



Shell globose, naticoid, whorls five, body whorl enorraously developed, the others 

 forming a sinall, obtuse spire. The thiri, transverse ribs are densely packed, running 

 obliquely, directed backwards toward the umbilicus. Their edges are minutely frilled 

 in a succession of diminutive wave lines and bent backwards, as to resemble hooks in 

 longitudinal sections. In older specimens, at least from some localities, the ribs are 

 distantiated, with sraooth interstices near the aperture. Thread fine, longitudinal lines 

 cross them, especially distinct on the smaller whorls. They are usually more distan- 

 tiated than the transverse ones, though there also is variability and the longitudinal 

 striae are more close and numerous, pl. II fig. 58. The aperture is obovate, rounded above, 

 pointed below, the outer lip is large and bent obliquely outwards, thin, and its inte- 

 riör corner, where it meets the inner lip, is prolonged in a triangulär, acuminated 

 tooth which stretches far backwards and nearly reclines on the body whorl. The inner 

 lip is narrow, straight, near the umbilicus divided in two diverging branches through a 

 triangulär slit between them. Of these the shorter one ends on the inner wall of the 

 umbilicus, while the longer borders the umbilicus on the outside. The umbilicus is 

 narrow and deep. H. 20 mill., br. 25 mill. 



Several specimens have been found in the upper limestone strata of Slite, 

 Samsugn, Stor Wede in Follingbo, Nya Slitegårds in Dalhem and Klinteberg. 



3. Craspedostoma elegantulum var. brevispira n. 



Pl. XXI fig. 30—34. 



This variety is small, globular, with five whorls, spire short as not to be visible 

 when the shell is seen from the side. The aperture is large and widened. The supe- 

 rior spur is relatively shorter than in the former, more narrow and pointed. The or- 

 namentation of the surface is finer and more reticulate, the edges of the transverse 

 ribs only a little outstanding and obtuse. The umbilicus is wide and the two branches 

 of the interiör lip widely diverging. H. 5 mill., br. 7 mill. 



A few specimens have been found in the limestone of the hill of Sandarfve. 



4. Craspedostoma filistriatum n. 



Pl. XXI fig. 35—38. 



Shell globular, helicoid, body whorl considerably enlarged, the spire prominent, 

 though obtuse, whorls four. The surface is smooth, nearly glossy, without any pecu- 

 liar ribs, of which there only are a few distantiated traces. The ornamentation con- 



