60 Notes on the Geology of South Ferriby. 
“a fine Section of the Holaster subglobosus-zone, exhibiting an 
abundance of Discoidea cylindrica, capped by the ‘“ black band,” 
here rft. 6in. to 2ft. thick,* and vielding Actinocamax [ Belemnitella] 
plenus, and this again overlain by 18 feet of yellowish-grey, marly, 
flintless chalk, containing Inoceramus mytiloides ; and the whole 
crowned by white flinty chalk yielding Terebratulina gracilis. 
The orthodox succession is here well shewn, and the ‘ black band’ 
is clearly the normal development of the Actinocamax plenus zone 
in this area. It will be noted that the thickness of the Rhynchon- 
ella cuvieri zone at Barton (15ft. to 18 ft.) is also usually small, 
though greater than that on the Yorkshire coast.” 
Amongst the fossils collected in South Ferriby quarry on this 
occasion were Echinoconus castanea, Rhynchonella cuviert, Tevebra- 
tula semiglobosa, T. cayvnea, and Inoceramus mytiloides. Dr. Rowe 
also records an example of Salenia granulosa in the next quarry 
towards Barton.{ 
A few other interesting records have been made in the Ferriby 
quarry. In the Transactions of the Hull Geological Societyt 
Mr. J. W. Stather records a specimen of Teredo amphisbaena, 
which, though not rare in the southern counties, does not appear 
to have been previously noticed in the north. ‘Teredo is a burrow- 
ing shell, and the species referred to above is allied to the well- 
known ‘ ship-worms’ which played such havoc by boring into the 
old timber-built vessels. 
In the same Society’s Transactions for the preceding year is 
recorded the fin of a teleostian fish from the Ferriby quarry. This 
was obtained about 30 feet above the black band, and is the first 
record of the species it represents (Protosphraena fevox) in the north 
of England. 
A further interesting discovery of fish remains was made so 
recently as 1905§ by Mr. H. C. Drake. It included a slab of marl 
with vertebra, fins and other remains of a fish in very fair preser- 
vation. It was taken from the uppermost beds of the Lower chalk, 
“Only the centre of this zone is really black. 
TLoe. cit. p. 242. 
TVol. 5. pt. 2. 1899-1900, pp. 41-42. 
SNaturalist, Cctober 1905, pp. 518-319, 
rh a phd, 
