GASTHROPODA. 23 
TRopHon Saini, Hancock. Supplement, Tab. II, fig. 15. 
Locality. Upper Glacial, Bridlington. 
A species is introduced into Dr. Woodward’s list of Bridlington fossils under this name, 
but to which no authority is attached. J presume the shell belonging to Mr. Leckenby 
figured here was the one intended. It is given asa distinct species by Dr. Woodward, and I 
have followed him. ‘This is the shell, I suppose, referred to by EH. Forbes in ‘ Mem. Geol. 
Surv., p. 426, No. 119, 1846, from the Irish Drift, as well as from Bridlington, but he has 
given to his fossil the name of 7. Sabini, Gray. Buc. Sabinii, Gray, is another species. 
The present shell seems more slender than Z. Jslandicus, with rather a deeper suture 
and a smaller apex, and it is, I imagine, the same as a shell figured by Gould, ‘ Invert. 
Massach.,’ p. 284, fig. 199, called /. Uslandicus, var. pygmaeus. 
Tropuon autus, S. Wood. Crag. Moll., vol. 1, p. 47, Tab. VI, fig. 18; and Supplement, 
Tab. I, fig. 17, a, 6. 
Localities. Red Crag, Butley. Fluvio-marine Crag, Bramerton. 
I have here given representations of two specimens which, I believe, belong to the 
fossil I previously figured and described, with the above name, im ‘Crag Moll.’ 
One is an elongated variety, with obsolete costa, which I found in the Red Crag 
at Butley ; the other is a shorter and more inflated shell, without ribs or strize, found by 
Mr. A. Bell also at Butley. The nearest approach to this species, as pointed out by Mr. 
A. Bell, is a specimen in the British Museum from Newfoundland, named /. cretaceus, 
Reeve, and Mr. Bell has sent to me for examination some fossil specimens he has received 
from Dr. Dawson with the locality of “ Riviere du Loup,” which appear to be identical 
with the Crag shell, differmg from / cretaceus,in having an obtuse or mammillated 
apex, and attached to them is the name of Buccinofusus Kroyeri. This Canadian fossil is, I 
think, the same as the Crag shell, and it appears to present the same difference from 
cretaceus of Reeve (the one having an obtuse apex, while the other is pointed) as is 
considered specifically to distinguish /. Islandicus from F. propinguus. I think the 
Canadian fossil is not the Kroyeri of Mdller. 
This Crag fossil was originally called Mwrew pullus by S. Woodward, and I would have 
adopted the specific name, but it is neither the pud/us of Linné nor the pudlus of Pennant, 
and, in order to avoid confusion, I have thought it best to give it a new name. 
