23: 



II. CATALOGUE 



OF 



LOWER GREENSAND FOSSILS, 



EST THE MUSEUM OF THE GEOLOGICAL SOCIETY, 



WITH NOTICES OF SPECIES NEW TO BRITAIN, CONTAINED IN OTHER 

 COLLECTIONS. BY PROFESSOR EDWARD FORBES, F.R.S.* 



[In the following list, after the name of the founder of the species, the best 

 figure in a British work, or if there be none, in a foreign work, is quoted. 

 Wherever there is a possibility of doubt, a note of interrogation is affixed. The 

 localities quoted are those from which there are specimens in the collection. 

 Other localities are given between brackets. The donors' names will be given 

 in a list'at the termination of the catalogue.] 



MOLLUSCA. 



Acephala Lamellibranchiata. 



1. Teredo. Sp. 

 Loc. Hythe. 



2. Gastrochcena. Sp. (an Gastrochaena dilatata Deshayes in 



Leymerie, t. v. pi. 3. f. 1. ?) 



Loc. Faringdon, Atherfield, Hythe, Peasemarsh. 



3. Pholas? priscus Sowerby, Min. Conch, t. 581. 

 Loc. Hythe, Maidstone. 



4. Solecurtus Warburtoni. Sp. nov. PI. 2. f. 1 . 



S. testa elongato-oblonga, depressa, concentrice striata, 

 postice subexpansa, antice striis subtillissimis ex umbone 

 radiantibus, umbonibus submedianis. 



Lon. 0^ unc. Lat. 2^- unc. f 



Loc. Atherfield (Cracker bed). 



This species, which bears a distant resemblance to the living 

 & coarctatus, presents some remarkable characters. The shell is 

 depressed, nearly aequilateral, and is rather broader at one ex- 

 tremity than at the other. The surface is finely striated by lines 

 of growth, which are crossed at the anterior and narrower ex- 

 tremity by regular very minute radiating striae, obscure traces of 

 which are seen also on other parts of the shell. In a large spe- 

 cimen the striae are replaced in the centre by smooth longitudinal 



* This Catalogue is referred to, and the general result given, in the previous 

 number of the Geological Journal, p. 78. 



f In the measurements of bivalves in this list, by length is understood the 

 distance between the cardinal and anterior margins; by breadth, the transverse 

 measurement parallel to those margins. 



