48 DUNBEY GASTEEOPODA. 



Deslongchamps' fig. 6 is very truthful. Our shell has a much 

 more elevated spire than Goldfuss' figure, but the clathrated 

 ornamentation is veiy similar; it is, however, in ours coarser 

 and much more pronounced, and the sinus-band is nearer the 

 middle of the whorl. 



I differ entirely from Dr. Braun's views, as to the constitution 

 of this species. 



There are five specimens in the Museum. 



Locality — Dundry. Inf, Ool. 



PLETJROTOMAEIA PAL^MOIS", D'Orbigny. 



1847 P. Palaemon, D'Orb., Prodrome I., p. 267. ' 



1850 D'Orb., Pal. fr. Terr. Jur. 2 Gast., 



pi. 380, figs. 1—11. 

 Syn. 1 848 P. granulata var plicopunctata and laevigata, Desl. 

 Mem. Soc. Linn. I^orm. YIII., pi. 

 16, figs. 5 and 7. 



Height, 25 mm. Greatest breadth, 43 mm. 



It seems probable from an examination of Dundry specimens, 

 that D'Orbigny is wrong in attributing the specimens of his pi. 

 880, figs. 1 — 6, to Sowerby's species : they differ therefrom by 

 the more depressed form and character of ornament; they are 

 distinguished by the strong 'radiating and transverse ridges on 

 the whorls, and the. absence or faintness of the longitudinal lines, 

 so that the granulated character is absent. The sinus-band is 

 different, being a simple convex ridge crossed by faint curved 

 lines; it is also further from the middle of the whorl. The 

 upper figures of D'Orbigny's pi. 380 are probably the same 

 species as the lower; they seem to differ only by the base of the last 

 whorl being still more convex, and the radial lines thereon being 

 stronger ; the form seems almost as much depressed. 



There are in the Museum nine specimens of various sizes. 



Localities— Dundry and Yeovil. Inf. Ool. 



