J, F. BLAKE ON THE KIMMERIDGE CLAY OF ENGLAND, 231 



very well for Phillips's shell ; but the figure of P. midas, given by 

 Dollfus (Faune Kimmeridienne, pi. 14. figs. 1-3), corresponds to 

 another form common in the Passage-beds at Weymouth, in which 

 there are gentle radiating risings more conspicuous in one valve 

 than the other. It is to this I have kept the name P. midas, using 

 P. nitescens for a smooth shell from the Lower Kimmeridge, which is 

 found in collections as P. demissus (Ph.). 



Pecten lens (Sow.). 



The shells so named are not in a state to be distinguished by ears 

 &c. ; but the ornament on them can in no way be distinguished from 

 that of true Forest-marble P. lens. 



Pecten Quenstedti, Blake. 



Pecten dentatus, Quenstedt, ' Jura/ tab. 92. fig. 3 (non Sow.). 



Quenstedt having wrongly identified this shell with Sowerby's, a 

 new name is required. 



Anomia Dollfitsii, Blake. 



Anomia, sp., Dollfus, ' Faune Kimmeridienne de la Heve/ pi. 15. 

 fig. 5. 



Dollfus having refrained from naming this very distinct form, I 

 assign his own name to it. 



. It is very similar to Spondylus ovatus and Posidonia suprajurensis 

 of Contejean, but is without doubt an Anomia. 



Bare in Lower Kimmeridge, Lincolnshire and Hartwell. 



Ostrea glbbosa (LesUeur), Dollfus, I. c. pi. 17. fig. 5. 



This is the shell generally named 0. Iceviuscida (Sow.) ; it is very 

 common at Market R-asen and elsewhere. 



Bhynchonella pinouis (Rom.). 



A doubtful identification; the ribs are obsolete near the umbones ; 

 and the shell makes a quick bend near the inferior side ; it is not so 

 " fat " as Ebmer's figure : but the specimens are rather imperfect. 



DlSCINA ELEVATA, n. sp. 



It is important to distinguish this from I), latissima on account of 

 their distribution. It is more oval, smaller, with the apex more 

 elevated, and more eccentric. 



Moderately common in the Lower Kimmeridge of Lincolnshire. 



Vermiculaeia contorta, n. sp. 



Whorls in one plane, separated from each other by spaces equal 

 to their breadth, round, without ornament. 



From the Kimmeridge Clay (? Upper or Lower), Ely. In the 

 Cambridge Museum. 



Serpula intestinalis (Ph.). 



S. variabilis, Sowerby, in Fitton's 'Strata below the Chalk/ tab. 23. 

 fig. 7. 



