KONGL. SV. VET. AKADEMIENS IIANDL. BAND. |9. N:0 6. 131 



The original specimen of Hisingku is from Ostergarn fi-oni where lately more 

 specimens have been obtained, and quite similar ones are very common in the lowest 

 shale near W'isby. It has also been found in the limestone of Gothemshammar, in 

 the shale beds and limestone of Slite, on Furillen, in FoUingbo and in the limestone 

 at Kalens Qvarn. 



8. MurcMsonia paradoxa n. 



PL XXI fig. 1—3. 



Shell cylindrical, turreted, slowly increasing in width, whorls seven in the best 

 preserved of two fragmentary s[)ecimens. The slit band is situated a little above the 

 median line of the whorls, it is elevated, with a flat surface, crescents regular, dense, 

 placed obliquely on the band whicli is crossing the axis of tlie shell in a highly acute 

 angle. The whurls which are of equal breadth and height, are of an only slightly 

 convex outline, though a little more bulging out in one of the specimens. They are 

 adorned with minute transverse lines of the same pattern as in M. attenuata and 

 M. cingulata. The uppermost margin of the whorls is at first constricted by a 

 shallow groove, then widened in a stringlike rib, which covers the basis of the over- 

 lying whorls. The state of preservation of the specimens prohibits to ascertain the 

 shape of the aperture and the umbilicus. Height of most complete specimen 36 mm., 

 br. 10 mm. 



Rate of growth of the whorls: 



Two specimens have been obtained from the gray limestone of Lindeklint. 



Divisio II. ORNATE. 



9. Murchisonia crispa n. 



PI. XII fig. 13—14. 



Shell turriculate, obese, thick, with six ventricose whorls which ;it their lowest 

 edge near the suture are constricted, forming a narrow vertical belt. The slit band is 

 placed much beneath the middle line of the whorls, a little above the suture. It is not 

 distinctly separated from the other surface through bordering lines and the cre- 

 scents are in direct continuation with the transversal lines. These arc distantiated, 

 lamellar, imbricated. The slit is well preserved, short and tongue shaped. No urn- 



