264 PLIOCENE MOLLUSCA. 



East Anglian Crag. It is rather common at Oakley, where I have obtained 100 

 specimens of it. There are others from the Coralline Crag at the British Museum 

 (Natural History) and in the Sedgwick Museum at Cambridge. 



My Oakley fossils vary in size and in the comparative length of the spire. 



Var. carinata, nov. Plate XXIX, fig. Si]. 



This variety, which is from Oakley, agrees with the type form in general 

 appearance and its excessively fine and characteristic spiral striation, but it is 

 smaller and the Avhorls are distinctly angulated. 



Baphitoma senilis (S. V. Wood). Plate XXX, fig. 3. 



1872-9. Pleurofoma senilis, S. V. Wood, Men. Crag Moll., 1st Suppl., pt. i, p. 42, pi. v, fig. 5, 1872 ; 

 2nd Suppl., p. 20, pi. iii, fig. 2, 1879. 



Sjyecific Characters. — Shell slender, rather large, strong and solid; spire 

 elongate ; whorls 8, slightly convex, the last three-fifths the total length ; orna- 

 mented by ten to twelve coarse longitudinal costfe, oblique or sinuous on the 

 last whorl and by fine spiral ridges which extend to the base of the shell ; 

 suture slight ; mouth long, narrow, acutely angulate above, passing continuously 

 into a short, wide canal. 



Dimensions. — L. 25 — 30 mm. B. 8 — 9 mm. 



Distribution. — Not known living. 



Fossil : Coralline Crag ?. Waltonian : Walton-on-Naze, Little 

 Oakley. Newbournian : Sutton, Waldringfield. 



Remarks. — The two specimens of this shell figured by Wood are in the Ipswdch 

 Museum, and I have several fragments, evidently the same, from Oakley. They 

 are all more or less Avorn, but I do not think they are derivative. 



Raphitoma Garlandi, sp. nov. Plate XXX, fig. 4. 



Specific CJiaracters. — K^heW slender, subfusiform ; whorls 7, slightly convex, the 

 last about three-fifths the total length ; spire elongate, gradually and regularly 

 tapering, ending in a blunt point; ornamented by numerous longitudinal ribs, 

 straight on the upper valves, sinuous on the last, extending nearly to the base of 

 the shell; suture well marked; mouth long, narrow, angulate above; outer lip 

 gently rounded, not expanded, passing without break into a short and open canal. 



Dimensiniis. — L. 21 mm. B. 7 mm. 



Di'ftrihution. — Not known living. 



Fossil : Waltonian Crag : Little Oakley. 



