256 PLIOCENE MOLLUSCA. 



Brocclii. Although broken it is in fresh condition and shows no sign of 

 derivation. 



Dr. Cipolla includes this species in the genus Peratotoma. Fischer regarded it 

 as the type form of Rapliitoma. 



Raphitoma atteauata (Montagu). Plate XXX, figs. 8, 9. 



1803. Murex attenuates, Montagu, Test. Brit., pt. i, p. 266, pi. ix, fig. 6. 



1836-44. Pleurotoma graciJe, Philippi, Enum. Moll. Sicilise, vol. i, p. 198, pi. xi, fig. 23, 1836; 



P. attenuata, vol. ii,p. 160, 1844 

 1853. Mancjelia attenuata, Forbes and Hauley, Brit. Moll., vol. iii, p. 488, pi. cxiii, figs. 8, 9. 

 1867. Pleurotoma attenuata, Jeffreys, Brit. Conch., vol. iv, p. 377, pi. xc, fig. 2. 

 1873-5. Raphitoma attenuata, Seguenza, Boll. E. Com. Geol. Italia, vol. iv, p. 298, no. 97, 1873 ; 



vol. V, p. 276, no. 35, 1874 ; vol. vi, p. 210, no. 225, 1875. 

 1877. llaphitoma attenuata, Bellardi, Moll. Terr. Tei'z. Piein., pt. ii, p. 315. 

 1883. Raphitoma attenuata, Bucquoy, Dautzenberg et Dollfiis, Moll. mar. Rouss., vol. i, p. 101, pi. 



xiv, fig. 25. 

 1890. Raphitoina attenuatum,'^ Cams, Pi-od. Faun. Mfdit., vol. ii, p. 422. 

 1905. Raphitoma {VilliersieUa) attenuatum, Kobelt, Icou. schalentrag. europ. Meeresconch., vol. iii, 



p. 380, pi. xcvii, figs. 11—14. 

 1910. Raphitoma attenuata, CeruUi-Irelli, Palaeont. Ital., vol. xvi, p. 70, pi. vi, figs. 52 — 58. 

 1914. DaphneJla (Raphitoma) attenuata, Cipolla, Palaeont. Ital., vol. xx, p. 165, pi. xiv, figs. 14, 15. 



Specific CJtaracters. — Shell slender, attenuated at both ends; whorls somewhat 

 convex, slightly angulated above, the last four-sevenths the total length ; ornamented 

 by narrow, flexuous ribs extending to the sitture and to the base of the shell ; spire 

 long and gradually tapering ; snture deep ; mouth narrow, contracted, passing into 

 a long and straight canal ; pillar nearly straight. 



Dimensions. — L. 10 — 14 mm. B. 3 — 4 mm. 



Distrihittioii. — Recent : British coasts, especially to the sonth and west. South 

 Sweden. Mediterranean. Adriatic, ^gean. 



Fossil : Coralline Crag : Ged grave, Sutton. Waltonian : Little 

 Oakley. Butleyan : Butley. Pleistocene : Belfast, 



Upper Pliocene : Colle Astesi, Valle Andona, Altavilla, Monte Mario, Biot. 

 Pleistocene: Italy — Reggio, Valle Biaia; Sicily — Ficarazzi, Monte Pellegrino. 



Remarks. — This British species, characteristic of the Upper Pliocene deposits 

 of Italy and generally diffused as a Recent shell in the Mediterranean, may be 

 regarded as mainly a southern form. The typical variety has not been noticed 

 hitherto in our Crag deposits, that figured by Wood under the present name 



' The use of the neuter gender has been recently revived for the specific names of the genera 

 Raphitoma, Pleurotoma, etc. Althougli more correct, its general adoption would require such an 

 enormous disturbance of the long-established nomenclature that it seems to me undesirable and, as I 

 think, unnecessarv. 



