and Fossil RemaiNs near Londot. 333 



21 1 ^Jig. 45, and is assumed by Gmelln, as Anomia spondylodes. The 

 other shells, fig. 46, of the same plate, referred to bj 6melln as 

 Anomia ps'ittacea^ appear to be mutilated specimens of the same shell. 

 This opinion is corroborated, by the tint given by the accurate 

 artists, to the whole of the shells contained in this plate, agreeing 

 wdth the dark colour of the Essex fossil ; and by the circumstance 

 ,of their being generally found in the mutilated state in which they 

 are here figured by Lister. Besides, neither of .Lister's specimens 

 at all agrees with the pellucid shell, with a triangular foramen, of 

 Anomia psittaceo^ but they all agree with the oval antiquated shell, 

 with an obtuse canaliculated beak, of Anomia spondylodes. 



In consequence of this agreement, it seems proper to consider 

 this fossil shell as forming the species, Anomia spondylodes. But 

 as the channelled beak is not natural to it, but is the consequence of 

 injury ; ^nd as this part, in its natural state, is pierced with a large 

 round foramen, a correspondent change should be made in the des- 

 cription, and it may be placed under the more appropriate genus 

 of terebratula, as, Terebratula spondylodes^ with an oval antiquated 

 shell, the beak pierced by a large round foramen. 



This shell is, in general, about an inch and a half long, thick, 

 neai'ly oval, roughly striated tninsversely, and has its large foramen 

 defined by a distinct border. It appears to differ from every known 

 recent or fossil terebratula. 



Another of the probably lost shells of this stratum is the fossil 

 oyster^ figured Organic Remains, &c. vol. III. pi. XIV. fig. 3, and 

 which is there conjectured to be the same oyster as that which is 

 described by Lamarck as Ostrea deformis. 



The volute^ Organic Remains, vol. III. pi. V. fig. 13. is another 

 shell belonging to this stratum, of which it is believed that no recent 

 analogue has been yet found. This ovate and rather fusiform, 



