326* PROCEI^DW>}GS W-fME GEOLOGICAL SOCIETY. 



the purposes of geology. But the reduction of it to the present 

 ^ scale has absolutely excluded such a representation of the features of 

 the coast, as I could have wished to exhibit. 



Under the circumstances above described, no addition to my col- 

 lection of species was to be expected ; but I obtained and have added 

 to the Table some new localities of the species already known. The 

 principal of these additions came from a point on the east of Black- 

 Gang Chine indicated in the upper section of the Table by the word 

 *' Fossils" ; — where a bed of sand, part of No. 42, apparently un- 

 mixed with calcareous matter, was disclosed at the foot of the cliff. 

 This I suppose to represent, or to be near the site of, the calciferous 

 nodules on the east of Shanklin, described at pp. 318, 319, as abound- 

 ing in fossils. 



The specimens obtained here include several of the species most 

 common in the middle portion of the present section, especially in 



- No. 35 and No. 45 : — Thetis, Gervillia, Trigonia (alceformis), jRos- 

 teUaria, Natica ; — with Ammonites Mm^tini ? and another Ammonite, 

 possibly A. Deshayesii. 



- The new places of species thus added to the Table will necessarily 

 ^^roduce some difference from the numbers mentioned in the sum- 

 J binaries given at pp. 320 and 321 ; but not such as materially to affect 

 ^ the general results, or to invalidate the argument connected with them. 



Since my return to London, Mr. Saxby, of Mountfield near Bon- 

 church at the eastern extremity of the great " Undercliff," a zealous 

 and judicious collector, has been so good as to send me some speci- 

 mens from his cabinet, which include the following species, previously 

 unknown upon this coast : — 



1 . A new and very well characterized species of Nautilus. This 

 Mr. Morris will describe, under the name of Nautilus Saxbianus. 

 It comes from the lower bed of the Crackers' group. No. 4. 



2. Pinna Gallienil (of D'Orbigny) ; — in a calcareous mass, said to 

 be from No. 14, the sand between the Lower Gryphaea and the Sca- 

 phites groups. 



From the opposite extremity of the great Undercliff — 



3. Pleurotomaria gigantea (Geol. Trans. 2nd Series, vol. iv. pi. xiv. 

 fig. 16), from Red-Cliff, Sandown Bay; the species being apparently 

 the same with P. Pailletteana of D'Orbigny — Terrains Cretaces, 

 vol. ii. pi. 189 ; — where, however, the former name and plate have 

 escaped the notice of the author. 



4. Trigonia carinata, also from the Red-Cliff — same place. 



5. With the foregoing species from the Lower greensand is a 

 waterworn mass, found loose upon the shore near Rocken End, and 

 consequently of uncertain original site. It seems to have formed a 

 portion of a Clathraria ; and, when carefully examined, will probably 

 afford some valuable information respecting that fossil genus. 



My friend Mr. Lonsdale informs me that he has ascertained the 

 existence of three new genera and some new species of corals, in my 

 collection of specimens from the vicinity of Atherfield. He will, I 



