98 



turbinate, rugose, spire somewhat elevated ; wliorls 4-5 

 angulated tuberculately coronate above and conspicuously 

 keeled, keel thin, finely granular with irregular lines of rather 

 larger granules above it ; apex smooth, aud turbinate for 1| 

 whorls, base very much produced by the spiral, sharp, smooth, 

 edge of the umbilicus, and handsomely ornamented with 

 spiral granular lines, and undulating subsquamose striae, which 

 are also found above the carina and between the granules on 

 the body whorl ; aperture orbicular, outer lip produced and 

 everted posteriorly, and narrowed into a fine short canal 

 anteriorly, inner lip acute, curved, umbilicus, keeled, in the 

 centre, very concave, and distinctly undulately striate. Diam. 

 8, alt. 7. 



This form which departs in many respects from the typical 

 Solarium has some affinity to S. turlinoides, ISTyst, and S. 

 trochiforme, Desh. of the French and English Eocene deposits. 



GiBBULA CRASSiGEANOSA. n. s. Shell solid, thick, rugose, 

 turbinately conical, apex obtuse, depressed, smooth, whorls 

 5-6, coronate with slightly oblique rounded ribs, extending to 

 a sharp granulose carina, in the middle, below they have a 

 conspicuous spiral groove to the suture on which is a line of 

 rery fine granules ; base sharply angular, slightly convex with 

 spiral lines of fine and coarse granules ; aperture, orbicular, 

 nacreous, columella produced into an anterior angle. Long. 14, 

 Lat 11. Young specimens have numerous oblique longitu- 

 dinal lines of growth, and are umbilicated. At the dimensions 

 given there are about 16 costae on the last whorl. 



GiBBULA JEQtJisuLCATA. n. s. Shell orbiculately turbi- 

 nate, sub-depressed, thick, apex acute ; whorls 5-6, rapidly but 

 regularly increasing, rounded, spirally finely regularly grooved, 

 and very closely lirate and regularly cancellate with extremely 

 fine diagonal stria? ; aperture orlDicular, smooth, outer lip 

 finely crenulate, inner lip arcuate with slight anterior angle ; 

 deeply narrowly perspectively umbilicate ; periphery rounded, 

 base convex, marked like the whorls. Diam. 12, alt. 9, Lat. 

 of apert. 6. Rare. The carinse between the grooves ai'e 

 sharp and very distinct from the much finer lirae with which 

 the whole shell is marked, on the last whorl where they are 

 crossed by the diagonal striae they become granulai'. 



Except that this is a more depressed and smaller shell, it 

 has considerable affinity with Trochus 2}(itichcs, Bron. of the 

 Vienna Miocene. The description, however, as given by Nyst. 

 Coq. Foss. p. 383, makes this a more angular shell in Belgian 

 formations. 



Turbo htheridgei. n.s. Shell turbinately conical, solid, 

 granular, grooved, spire rather elevated and acute, whorls 

 6-7, convex, conspicuously carinated with 5-7 elevated sub- 



