34 SUPPLEMENT TO THE CRAG MOLLUSCA. 
PLEUROTOMA GasTaLDII, Sismonda. Syn. Method. Pied. Foss., p. 33, 1847. 
— ao Bellardi. Mon. Pleurot. Foss. Pied., p. 44, t. xi, fig. 19, 1848. 
— NIVALIS? Jeffreys. Brit. Moll., vol. iv, p. 388, pl. xci, fig. 4, 1867. 
Localities. Cor. Crag, near Orford, and Ramsholt. 
I have given two fresh views of this species of specimens from the Cor. Crag, near 
Orford, as they are variable in ornament; one is nearly smooth and the other shows a 
row of prominent nodules in the middle, formed by the thickened margin of the back of 
the sinus. ‘I'he specimen previously figured, ‘Crag Moll.” vol. i, Tab. VII, fig. 1, is of 
an intermediate character. » 
M. Bellardi (p. 44, as above) has given the date of 1842 to the name of Gastaldii. I 
am not able to determine the right to priority. My copy of ‘Syn. Meth. Pied. Foss.,’ 
referred to, is dated 1847. 
Pievrotoma TARENTINI,? Philippe. Supplement, Tab. ILI, fig. 5. 
PLEUROTOMA TaRENTINI, Phil. En. Moll. Sic., vol. ii, p. 175, t. xxvi, fig. 26. 
Locality. Cor. Crag, near Orford and Sutton. 
The specimen figured was sent to me by the late Dr. 8S. P. Woodward some years since, 
as having been found in the Coralline Crag, near Orford, and with it was the name of Pleuro- 
toma Renieri, Phil. Some fragments of the same species have been long in my cabinet, 
but I had imagined them to be the young state of Pl. turricula, Broc. (P. turrifera). 
Mr. A. Bell has sent to me, since my figure was engraved, a specimen in better condition, 
accompanied by the name of P/. Zarentini, while I have myself obtained another, and as 
I think it corresponds with that species rather than with P/. Renzerz, I have so referred it, 
although probably the two species may be united. It is ornamented with spiral ridges, 
the two upper ones being larger and further apart than the others; these ridges are 
continued over the base of the volution, but the upper part is not carinated. The 
sinus appears to be broad and shallow, curving towards the suture; the apex of the 
shell is obtuse, and the two first volutions smooth. 
Piuvroroma moptonA, Jan. Crag Moll., vol.i, p. 54, Tab. VI, fig. 2 (as P. carinata). 
Fusus Mopio.us, Jan. Catal., p. 10, No. 17, 1832, fide Hornes. 
PinuroroMa mMopioLA, Bellardi. Mon. Pleurot. Foss. Pied., p. 68, t. ii, fig. 9, 1841. 
= —  MHornes. Foss. Moll., Vienna, vol. i, p. 366, t. xxxix, fig. 12, 
1856. 
Localities. As in Crag Moll. 
My Crag shell was referred to P/. cariuata, Phil., which, being subsequent in date to the 
above, I have here adopted the older one. I have not been able to find a specimen since 
