Mr. A. Bell on the Crag-Fauna. 359 



convex at bottom, constricted towards the top ; suture 

 slight, forming a channel on the top of the whorl ; ribs stout, 

 but hardly raised above the surface ; mouth short, open, 

 canal short and broad ; pillar-lip straight, reflected, with 

 the callus massed into a pad at the top, which forms one 

 side of the labial notch; notch very large, broad, and deep j 

 outer lif) spreading. Long, -j^ inch. C. C. Gedgrave. 



P. terehra, Dujardin, has a general resemblance to the 

 above ; but the diagnosis and figm'e are both too short for 

 comparison. A worn specimen obtained from the R. C. 

 appears to belong to this species. 

 Mitra ehemis, Lam. R. C. Waldi-ingfield. 



^Ovula adrtatica, Sow.'^(Mon. Crag Moll. tab. 2. f. 16, Ovula 

 Leathesii^ var.). A specimen in Mr, Jeffreys's collection 

 is hardly to be distinguished from a Crag shell found by 

 myself. It differs somewhat from the typical form in the 

 expansion of the lower part of the lip. In all other par- 

 ticulars they agree. R. C. Butley. 



^Natica horealisj Sow. (Beechey's Voyage, pi. 37. f. 2). R. C. 

 Butley. ISTorw. C. Thorpe, Suffolk. N. horealis bears the 

 same relation to N. grcenlandica that is assumed by N. oc- 

 clusa towards N. affinis. 



* ■ groenJandica^ Beck. R. C. Shottisham. Norw. C. 



Thorpe, Suffolk. 



* Alderi, E. F. R. C. Butley, Shottisham Creek, &c. 



Odostomia lactea, L. [Chemnitzia elegantissima^ Mont.). 

 R, C. Walton-Naze. 



* [Chemnitzia) 23licatulaj Broc. Conch, foss. Subap. t. 7. 



f. 5. R. C. Walton-Naze, Butley. 



( Chemn.) internodula,yV ood. A shortly conical variety, 



unnoticed by Mr. Wood, is not uncommon in both the C. 

 &R.C. 



(Chemn.) suturalts, Vh.il. R. C. Waldringfield. 



obliqua, Alder. C. C. Sutton. 



Trifoi'is perversa, L. C. C. Sutton. T. perversa and T. 



adversa both occur in the C. C. 

 Cerithiopsis iuhercularis, Mont. R. C. Shottisham Creek. 

 Vermetus glomeratus, Biv., = V. i?itortus, Mon. Crag Moll. 



t, 12. f. 8. 

 * triqueter, Biv. (Phil. En. Moll. Sic. t. 9. f. 21). R. C. 



Waldringfield. 



arenarius, L. C. C. Orford. 



Turritella planispira^ S. Wood. R. C. Shottisham Creek. 

 * suhangulata^ Broc. Conch, foss. Subap. t. 6. f. 16. R. C. 



Waldringfield. 

 CcBcum mammillatum^ S. Wood. R. C. Walton-Naze. 



