139 



allied to f. 1 and la and 2, but they seem to be sufficiently 

 distinguished in their more elevated symmetric spire and the 

 smallness of the tubercules when compared with C. Leachi, 



ClRRUS PYRAMIDAIvIS, pi., fig. 5. 



,, TAWNEY, Proceedings of the Bristol Naturalists Society 

 new series, vol. 1, part 1, pi. 2, fig. 10, p. 37. 



Shell acutely conical, whorls numerous, convex ; a single 

 slight keel or projecting ledge on the last whorl ; the whorls are 

 crossed by numerous rounded costae, which are prominent above 

 the keel, but become obliterated below. The whole surface of the 

 shell is adorned with a granulation formed by the crossing of 

 spiral and transverse dotted lines. The umbilicus is surrounded 

 by faint radiating costee. The base of the last whorl is convex, 

 and has decussating lines, but the costse do not extend immedi- 

 ately below the narrow keel ; they reappear however around the 

 umbilicus.* 



Mr. Tawney speaks of three specimens from Dundry as being 

 in the Bristol Museum. We have a single specimen from Coker^ 

 Any way it is a very rare shell, but we fancy it bears evidence 

 of there being still more species than we know of. 



CIRRUS CALISTO, pi., figs. 6 and 6a. TURBO CALISTO, D" 1 Qrligny, 

 Ter Jur., pi. 332, figs. 9 and 10. 



This shell is described by D'Orbigny as follows : 



T. testd conicd, sulumlilicatd ; spird senestrd; anfractibus con- 



vexis, angulosis, longitudinaliter costulatis infernd nodosis; aperture 



rotundatd.] 



We have two portions of this shell, both from Coker ; it ia 

 evidently very rare, but can readily be distinguished by its 



* See Tawney' s Paper before cited. 



f D'Orbigny's Tur. Jur. Tome second, p. 345. 



