RELATIONS TO OTHER .BRITISH DEPOSITS. 65 



Cythercea. Trigonia Keepingi, Lycett. 

 Avicula. „ Tealby ensis, Lycett. 



Area. „ ingens, Lycett. 



Astarte and Myacites. Cuctillcea Donningtonensis, Kpng. 

 Lima Tombeckiana, d'Orb. ,, errans, Kpng. 



Trigonia Robinaldina, d'Orb. Cardium subhillanum, Leym. 



,, (dfedaloid form). Pecten orbicularis, Sby. var. mag- 



,, alcformis, Sby. var. nus, Keeping. 



The middle series, or Tealby series proper, is very rich in fossils, 

 which include the following Upware species: 



Belemnites pistilliformis, Blainv. Avicula Cornueliana, d'Orb. 



„ subquadrahts, Roem. Lima Tonga, Roem. 



Chemnitzia (with spiral grooving at Lima Tombeckiana, d'Orb. 



base). Astarte, sp. 



Ostrea Coidoni, d'Orb. Terebratula Tomasensis, d'Arch. 



„ macroptera, Sby. ,, depressa, Lam. 



Pecten orbicularis, Sby. Waldheimia Juddii, Walker. 



Our Waldheimia Woodwardi is represented by W. Mppopus in 

 Lincolnshire. 



This list forms but an unimportant and insignificant pro- 

 portion of the Tealby species, and they convey the impression 

 that these beds are somewhat less nearly allied to our Ironsand 

 and Phosphatic series than the Atherfield clay. 



Unfortunately I have not been able to obtain many indigenous 

 fossils from the Upper Neocomian sands of Lincolnshire, but it is 

 to these I look as being the probable representatives of the Potton, 

 Upware, and Hunstanton beds. 



In our account of the phosphatic nodule beds (ante p. 10) we 

 have already described the phosphatic nodule beds which occur in 

 the Lincolnshire area, both at the lower junction with the Jurassic 

 Clays and at the upper junction with the Red Chalk. But in spite 

 of the close resemblance of the nodules in these beds to those of 

 the Cambridgeshire and Bedfordshire district, I cannot regard either 

 of them as having been synchronous with the Upware nodule bed. 



Twenty-four of the Upware and Brickhill species are common 

 to the Speeton area, and of these five are Lower, nine Middle, and 

 eleven Upper Neocomian. The most noteworthy of these species in 

 the lower beds are Belemnites pistilliformis, B. subquadratus and 

 Exogyra Coidoni; in the middle series Belemnites pistilliformis, B. 

 subfusiformis and Ostrea macroptera; and in the upper beds Belem- 

 nites subfusiformis, Ammonites Deshayesii, Ostrea macroptera, Tere- 

 k. 5 



