66 EXPLANATION OF THE PLATES. 
Fic. 5.—a, b. ConuLtarta Sowereyi. Defrance. 
Blainv. Malacol, p. 577, pl. xiv., fig. 2; b,—e, C. quadrisulcata, Miller, Sil. 
Syst., p. 626, pl. xil., ig. 22; C. Sowerbyi, Sil., 4th edition, p. 534, pl. 
OGYoy 1 IOP 
a, b. Original. a, Natural size; 6, Enlarged portion; Wenlock Limestone, 
Malvern; Mus. G. 8. I. 
Carapoc to Luptow.—Sil., 4th edition, p. 534. ‘This beautiful and vari- 
able species, which ranges upwards from the Caradoc strata to the 
Ludlow rocks, is often found in Wenlock limestone, and occurs with a 
rarer species, C. subtilis, in the Ludlow rocks of Westmoreland ;” ibid. 
pp. 199, 232. Additional locality, Wenlock Limestone, Wenlock Edge, 
Sil., 4th edition, description of pl. xxv. 
