RAPHITOMA CURTISTOMA. 271 



Specific Characters. — Shell slender, subfusiform ; spire elongate, regularly- 

 tapering ; whorls 7, but slightly convex, subturreted ; ornamented by nine or ten 

 oblique, longitudinal costse, not very prominent, which extend to the base of the 

 shell and to the suture ; suture oblique, well marked but not deep ; mouth narrow, 

 showing plainly the labial notch, passing almost without break into a short and 

 open canal. 



Dimensions. — L. 10 — 12 mm. B. 3 — 5 mm. 



Distribution. — Fossil: Coralline Crag: near Orford. Waltonian : Little Oakley. 

 Probably elsewhere in the Red Crag. 



RemarJiS. — The present shell, which comes from my Oakley collection, agrees 

 more or less nearly with that figured by Philippi, and one of those of Prof. Kobelt. 

 That form was referred by its author to the Mangelia Hriolata of Scacchi, but, as 

 explained on p. 249, the latter had been identified by him with Risso's species of 

 the same name, a prior and different species. Whether Scacchi's identification was 

 wrong or whether the mistake was Philippi's, it is impossible now to discover. I 

 associate the Crag fossils with Philippi's shell, therefore, and not with that of 

 Scacchi. As striohita has been already used, I propose a slightly different name 

 for the present form. 



The specimen figured by Wood, moreover, may be referred to Philippi's species 

 and not to that described on p. 248 as Mangelia Smithii. 



Raphitoma curtistoma (A. Bell). Plate XXX, figs. 27 — 29. 



1871. Ph'urotoma curtistoma, A. Bell, Ann. Mag. Nat. Hist. [4], vol. vii, p. 357. 



1879. Plenrotoma curtistoma f, S. V. Wood, Men. Crag Moll., 2nd Suppl., p. 17, pi. ii, fig. 9. 



Specific Characters. — Shell slender, subfusiform ; whorls 8, but moderately 

 convex, regularly diminishing in size, the last about half the total length ; orna- 

 mented by about ten strong, but not very prominent longitudinal ribs, Avhich 

 reach the base, and by very fine spiral lines, only visible by the aid of a lens ; spire 

 elongated, regularly tapering; suture slight; mouth short, oval, rather wide, with 

 the canal about one-third the length of the shell ; canal very short and open ; 

 outer lip thin, regularly curved. 



Dimensions. — L. 14 mm. B. 7 mm. 



Distribution. — Not known living. 



Fossil : Coralline Crag : Gedgrave, Boyton. Waltonian : Little 

 Oakley. /^ 



Remarks. — The type specimen of this fossil is in the Reed collection at the 

 York Museum, associated with a label to that effect in Mr. Bell's writing. I have 

 several others from Oakley, which seem to be the same. Jeffreys regarded it as 



