184-6.] PRESTWrCH on the isle OB' WIGHT TERTIARIES. 229 



Sedgwick in 1822, and in 1839 Mr. Bowerbank enumerated fourteen 

 species*. 



From this localitj' I procured the following twenty species, besides 

 teeth of Squalus : — 



Dentalium (Ditrupa) planum. Pyrula tricostata ? 



Pectunculus brevirostris. Lutraria oblata ? 



Pholadomya margaritacea. Rostellaria lucida ? 



Panopaea intermedia. Cerithium, sp. 



Rostellaria Sowerbii. Fusus, sp. 



Turritella imbricataria. Cytherea, sp. 



Vermetus Bognorensis. Ostrea, sp. 



Pinna afRnis. Corbula, sp. 



Calyptraea trochiformis. Venericardia, sp. 



Pleurotoma undata ? Natica, sp. 



At White CliiF Bay this stratum is considerably thicker, but the 

 fossils in it are neither so abundant nor so well-preserved. I believe 

 they have been hitherto overlooked t« Owing to the very rainy 

 weather during my stay there, I found it difficult to preserve spe- 

 cimens. They are sufficient however to prove the identity of the 

 bed with that at Alum Bay. The species which most abound are 

 characteristic, such as 



Dentalium (Ditrupa) planum. Panopaea intermedia. 



Pectunculus brevirostris. Rostellaria Sowerbii. 



Turritella imbricataria. Pholadomya margaritacea. 



In the 750 feet of varied and brilliantly coloured strata between 

 this stratum and stratum " B " at Alum Bay, no animal remains have, 

 I believe, yet been found. Traces of vegetable matter in the shape 

 of lignite, and some few impressions of leaves are however common J, 



Without a careful examination of this part of the series at various 

 points in its range from Alum Bay to White Cliff Bay, it M^ould be 

 premature to decide whether these beds thin out or whether they 

 become fossiliferous, and are represented by strata Nos. 5 to about 



16 at the latter place §. This is a point which, if I could have found 

 leisure, I had purposed to investigate more fully ; I beg however to 

 direct attention to it as one of considerable interest. 



* The species enumerated by Mr. Bowerbank (Geol. Tr. 2nd Ser. vol. vi. p. 172) 

 are as follows : — 



Venericardia planicosta. Nucula amygdaloides. 



margaritacea. Turritella conoidea. 



Mya (Panopaea) intermedia. elongata. 



Ostrea, sp. edita. 



Venus, sp. Murex innexus. 



Cardium semigranulatum. Buccinum desertura. 



Nucula similis. 

 He also mentions that he found a well-preserved specimen of the Cancer 

 Leachii, and I have since seen in his collection the Cardium semistriatum, Na- 

 tica labellata, Rostellaria Sowerbii, R. rimosa, and two species of Pleurotoma. 



t Since the above was written they have been fully noticed by Prof. E. Forbes 

 and Capt. Ibbetson ; and a notice concerning them was read at the York meeting 

 of the British Association. 



X Mr. Pratt has recently obtained some beautiful impressions of leaves in abed 

 of white and red clay, corresponding, as well as 1 can make out, with the stratum 



17 of my section. 



§ The latter case is the more probable. 



