GASTEROPODA. 25 



Chemnitzia similis (' Crag Moll.,' vol. i, p. 84, tab. x, fig. 11) strongly resembles the 

 representations of a shell called Scalaria ? {Pyrgiscus) Leunisii, Phil., from the upper 

 oligocene given in Speyer's work, ("Die conch der Casseler Tertiarbildungen." p. 180, 

 tab. xxiv, figs. 10 — 12), but I have not been able to compare my shell with the original 

 of this. The apex of my shell is obtuse or slightly reversed as in the shell represented by 

 Dr. Speyer, and has ten volutions, with 12 — 17 upright or slightly sloping costulee, 

 traversed by six or seven spiral lines. The Crag shell, similis, though abundant, is seldom 

 in perfection (the surface being often worn down or decorticated), and it is rather more 

 cylindrical than the German species represented by Dr. Speyer. 



Scalaria torulosa, Brocchi. 2nd Sup., Tab. II, fig. 13. 



Tubbo tobulosus, Broc. Conch. Foss. Subap., vol. ii, p. 377, tab. vii, fig. 4. 

 Scalaria torulosa, Homes. Vienna Foss., p. 488, taf. xlvi, fig. 13 a, b. 



Length 1 inch. 



Breadth 4 lines. 



Locality. Cor. Crag ?, Boy ton. 



A single specimen of this species has been obligingly sent to me by Dr. Reed, and he 

 tells me he obtained it from Mr. Charlesworth, who says it was turned out of the phos- 

 phatic nodule workings at the edge of the Butley river in the Parish of Boyton, to which I 

 have already (p. 3, footnote) referred, and its reference to a particular division of the Crag 

 is therefore somewhat uncertain, but unless it be a specimen from the nodule bed itself 

 (in which case it would in all probability be derivative from a formation older than the 

 Coralline Crag), it is to that division rather than the Red that I should refer it. I 

 have little doubt but that it may safely be referred to the fossil called as above by 

 Brocchi ; it is also present in the Vienna beds. Our specimen appears to have been 

 a good deal rubbed (which favours its derivative origin), and the fine striae with which 

 it was originally ornamented are nearly obliterated. I have also received from Mr. 

 R. Bell a fragment of this species, with a notification that it came from the Red Crag 

 of Waldringfield. This fragment is much mutilated and abraded, and evidently of 

 derivative origin. 



Scalaria fimbriosa, 8. Wood. Crag. Moll., vol. i, p. 91, Tab. VIII, fig. 12; 2nd Sup., 



Tab. Ill, fig. 17 a, b. 



Locality. Cor. Crag, near Orford. 



The specimen now figured presents some differences from that figured in Tab. viii 



4 



