4C SUPPLEMENT TO THE CRAG MOLLUSCA. 



Pleurotoma rugulosa, Philippi. 



Pleurotoma rugulosa, Phil. En. Moll. Sic, vol. ii, p. 169, t. xxvi, fig. 8. 

 — — Jeffreys. Brit. Concli., vol. iv, p. 381, pi. xc, fig. 4. 



Locality. Coralline Crag, Sutton. 



Very recently I have found two or three specimens which I believe may be fairly 

 referred to the above-named species. They were obtained too late to be represented in 

 my plate. 



Pleurotoma striolata, Philippi. 



Pleurotoma striolatum (Scacchi), Phil. En. Moll. Sic, vol. ii, p. 1C8, Tab. xxvi, 



rig. 7. 



Locality. Coralline Crag, near Orford. 



Since my plates were engraved for this work, Mr. Robert Bell has shown me a 

 specimen from near Orford with the above name, which I believe is correctly referred, and 

 more recently I have obtained a similar one from the same locality. 



Cancellaria contorta? Basterot. Supplement, Tab. VI, fig. 19. 



Cancellaria contorta, Bast. Foss. Env. de Bord., p. 47, pi. ii, fig. 3, 1825. 



— — Homes. Vienna Foss., vol. i, p. 31 1, t. xxxiv, figs. 7, 8. 



— Bellardi. Foss. Tert. de Pied., p. 29, t. iii, figs. 7 — 10. 



Locality. Coralline Crag, Gedgrave. 



Two specimens of this species have been obtained by Mr. A. Bell and sent to me with 

 the above name. They differ slightly from the general form of contorta in being rather more 

 elongated, corresponding with what Dr. Homes has considered a variety (fig. 8 of his plate), 

 which has comparatively a smaller and shorter aperture, that is less than the length of the 

 spire. It has about sixteen longitudinal ridges, crossed by spiral striae, alternating large 

 and small, and the outer lip is strongly denticulated. It is an elegantly formed shell, and 

 not at all appropriately named. Having had no other means of identifying this than 

 figures, I have given the reference with doubt. 



Cancellaria gracilenta, S. Wood. Supplement, Tab. Ill, fig. 23. 



Spec. Char. C. Testa minuta ovato-acuta, extremitate utraque acuta anfractibus 



