Prof. Germar on the Petrifactions of OsteJisoeddiggen. 369 



No traces were found of chambered shells, except a couple 

 of remnants of the so-called jointed Dentalia, one of them 

 with the apex broken off, in the state of a cast, the other as a 

 very acute cone, with its shell partly preserved ; these shells 

 were in all probability related to Dentalium. 



A true Bidla Lam., the casts of which are known by the 

 name of Physalites, was frequently met with in that state, but 

 only twice as a fossil shell. It is of the size of a coffee-bean, 

 is nearly cylindrical, its apex umbilicated, and has regular 

 fine transverse striae. 



Of Turbo two small species were found, it seems, with an 

 umbilicus : the one, almost perfectly conical, and striated lon- 

 gitudinally; the other, with a shorter spire, smooth, and ap- 

 pertaining perhaps to Delphimda Lam. They appear, how- 

 ever, to occur but rarely, and but few casts of them were 

 found. 



The genus Turritella likewise appears to have been rare at 

 this spot. Two specimens, which were not complete, might 

 indeed belong to two different species, and are of about four 

 lines in length, but it is impossible to determine them more 

 exactly. 



Trochi were more abundant, but were found as casts only ; 

 with some fossil opercula, which perhaps belong to this genus, 

 but which had joined concentrically, and not in a spiral form. 

 Of the genus Natica many casts were found ; and several 

 fossil specimens collected, which may belong to different spe- 

 cies. One particularly distinguished species, of the size of a 

 hazel-nut, has only from four to five volutions, a very flat 

 and scarcely protruding spire, is closely and very finely striated 

 in a spiral direction, and marked at greater intervals with un- 

 dulated longitudinal striae. Another and very similar species 

 is rather smaller, nearly smooth, its spire more produced, and 

 appearin<T to be plicated on the apex. Another, probably a 

 species of this genus, has five or six scarcely protruded volu- 

 tions, the largest of which, where it meets the other, appears 

 pressed and driven in. 



Of the f'-enera Conus and Cijprcea no remains were tountl, 

 but some of Voluta and OUva occurred ; and of these, a spe- 

 cies which possesses some resemblance to the smaller speci- 

 mens of Vol. glabella, but which is unknown. Also a small 

 species of the genus Columbella. 



Whether real Buccinites were present cannot be exactly 

 ascertained. Casts are abundant, which, according to the size 

 of the first volution, might be placed amongst Buccinites : but 

 tliey appear to have originated rather from Voluta and other 

 "enera diau from Bucciman. 



Vol. 02. No. 'Ml. Nov. 1823. 3 A Iwo 



