457 
proposes to designate it by the name of C. decussata. ‘The collection 
of the late Mr. Crow, now in the Canterbury Museum, contains three 
specimens of this fossil, which, with two others presented by Mr. E. 
Crow to the Geological Society, are said by the author on the au- 
thority of that sentleman, to have been found in digging a ha-ha at 
Nash Court, about two miles from Faversham. Mr. Trimmer like- 
wise mentions as independent evidence of these fossils having been 
found at Nash Court, that it is stated on both editions of Mr. 
Greenough’s Map, that siliceous fossils occur there. 
A careful examination of the specimens presented to the Geologi- 
cal Society by Mr. E. Crow, has verified the correctness of Mr. 
Parkinson’s opinion, that the Faversham shell is plage) distinct 
from the Cucullzez of the greensands. 
The strata of Nash Court, Mr. Trimmer says, undoubtedly belong 
to the lowest sands of the London clay, and to that portion which is 
very near the junction with the chalk. 
In the village of Boughten, not far from Nash Court, Mr. Trim- 
mer has examined two sections situated to the east and west of the 
50th mile-stone, and nearly on a level with the ha-ha, in which the 
Cucullea decussata was found. ‘The strata consisted of white and 
ferruginous sand with layers of ferruginous clay, in some parts con- 
siderably indurated. He did not observe any organic remains, but 
shells are reported to have been found im the eastern section. Ata 
greater elevation on the side of Boughton Hill, and a little below 
the junction of the sands with the brown clay, which forms the sum- 
mit of the hill, are courses of geodes of a ferruginous sandstone very 
like some of the Wealden sandstone, and lined with mammillary sili- 
-ceous deposits and quartz crystals. Casts of plastic clay shells are 
oceasionally found in the:sandstone, but more abundantly in the al- 
ternate layers of indurated ferruginous clay. From a bed four feet 
thick of this sandstone worked in a quarry in the wood on the side 
of Boughton Hill, Mr. Trimmer obtained casts of Calyptrea trochi- 
formis, ‘Rostellaria Sowerbu (Strombus pes Pelicani of Mr. Parkinson), 
Potamides intermedium, and a Venus which has been considered a 
variety of V. ovalis, but is clearly distinct. Similar remains are stated 
by the author to occur in the upper part of the cliffs at Reculver, 
_ either in loose masses, or sand slightly indurated. In conclusion, 
Mr. Trimmer acknowledges the assistance which he received in pre- 
paring the communication. 
4. “A description of a portion of the skeleton of the Cetiosaurus, 
a gigantic extinct Saurian Reptile occurring in the Oolitic forma- 
tions of different portions of England,” by Professor Owen, F.R.S., 
F.G.S. 
The remains described in this memoir consist of vertebre and 
bones of the extremities obtained by Mr. Kingdon from the oolite 
quarries of Chipping Norton, in Oxfordshire ; of vertebree and other 
bones from the oolite of Blisworth, near Northampton, transmitted 
to the author by Miss Baker; and of other remains from the oclite 
of Staple Hill, Wotton, three miles north-west of Woodstock ; from . 
the oolite near Buckingham ; the Portland stone at Garsington and 
