38G PLIOCENE MOLLUSCA. 



of the shell ; suture fairly deep ; mouth ovate, passing without break into a very- 

 short and open canal ; labial notch distinct. 



Dimension*. — L. 12 mm. B. 4 mm. 



Distribution. — Recent : Arcachon. 



Fossil : Waltonian Crag : Little Oakley. 



Remarks. — On p. 270, PI. XXIX, fig. 26, I described some Oakley fossils as 

 R. striatula ; they belonged to the R. mitrula group, but differed, specifically, as I 

 thought, from that species. I suggested they might represent the one figured by 

 Philippi as P. striolata, Scacchi, to which name, in my opinion for reasons then 

 given, the latter had no right. I have received lately, however, from my friend 

 M. Dautzenberg some specimens which he considers to agree more nearly with 

 Philippi's P. striolata, and these I find to correspond very closely with some in 

 my Oakley collection which I had been unable to identify ; one of each I have now 

 figured as R. substriolata, my objection to the name striolata for them being the 

 same as in the case mentioned above. 



The present shell differs from R. mitrula in its general appearance and texture; 

 it is stronger, more solid, its surface being polished and without spiral sculpture 

 and its costse less numerous and more distinctly chiselled. I have about half a 

 dozen of them from Oakley ; they seem to separate themselves clearly from any 

 variety known to me of the polymorphous species E. mitrula. 



Raphitoma nuperrima (Tiberi). Plate XXXIX, fig. 5. 



1844. Pleurotoma decussatum, 1 Philippi, Enum. Moll. Sic, vol. ii, p. 174, pi. xxvi, fig. 23. 



1873-5. Raphitoma decussata, Segueuza, Boll. E. Com. Geol. Ital., vol. iv, p. 296, no. 91. 1873; 



vol. v, p. 276, no. 34, 1874; vol. vi, p. 210, no. 231, 1875. 

 1878. Raphitoma nuperrimum, Tiberi, Test. Nov., p. 14, pi. ii, figs. 6, 7. 

 1883-98. Raphitoma nuperrima, Bucquoy, Dautzenberg et Dollfns, Moll. mar. Rouss., vol. ii, p. 792, 



1898. 

 1892. Raphitoma nuperrima, Locard, Goq. mar. Cotes de France, p. 59, fig. 47. 

 1905. Raphitoma nuperrimum, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. iii, p. 385, pi. xcviii, 



fig. 7. 

 1878. Raphitoma nuperrima, Monterosato, Enum. e Sinou. Conch. Medit. (Griorn. Sci. Nat. ed. Econ. 



Palermo, vol. xiii, p. 45). 



Specijir Characters. — Shell small, elongato-fusiform, slender, delicate; whorls 

 8, more or less convex, obtusely angulate above, the last excavated below, passing 

 almost without break into a narrow canal ; spire attenuate ; suture well-marked ; 

 ornamented by about 12 flexuous longitudinal costse, and by fine, well-marked 



1 The name P. decussatum had been previously used (in 1839) by Couthouy for a North American 

 shell. 



