JURASSIC AND TRIASSIC BRACHIOPODA. 203 



193. Rhynchonella Lycetti, Dav. Ool. Mon., p. 81, PI. XV, fig. 6. 



Nothing new. Middle division of Inferior Oolite, Minchinhampton ; and Oolite- 

 marl, Leckhampton Hill, Cheltenham. 



194. Rhynchonella Moorei, Dav. Ool. Mon., p. 82, PL XV, figs. 11—14. 



Prof. Tate, in his table showing the distribution of British Liassic Brachiopoda, ' Geol. 

 Mag.,' December, 1869, quotes this species from the Am. spinatus Zone, Middle Lias; 

 also from the Zones of Am. bifrons and Am. jurensis, Upper Lias. 



195. Rhynchonella sub-variabilis, Dav. Ool. Mon., p. 80, PL XV, fig. 7, and 



PL XVIII, fig. 11. 



Rhynchonella sub-vaetabilis, De Loriol. Mon. Pal. et Geol. des Stages sup. Jur. 



Bas-Boulonnais, p. 239, pi. xxv, fig. 2, 1872. 



This shell has been found in the Kimmeridge clay in the Sub-Wealden boring at 

 Netherfield, near Battle, in Sussex ; Mr. Seeman obtained it likewise at Hartwell, near 

 Aylesbury. It does not appear to be a very abundant fossil in England, nor is it very 

 common in the middle beds of the Portland of Boulogne-sur-Mer, where I found it 

 for the first time many years ago. M. de Loriol observes that this species is easily 

 distinguishable by its wide compressed shape, and by its sculpture which is formed of 

 radiating striae intersecting undulating, concentric, slightly raised laminae. 



196. Rhynchonella acuta, Sow. Dav., Ool Mon., p. 76, PL XIV, figs. 8, 9. 



I still adhere to my statement at p. 76 of the ' Oolitic Monograph,' and consider Rh. 

 acuta a good and distinct species (as species go, or are viewed by palaeontologists). It is 

 easily separable from Rh. cynocephala, Rh. bidens, and triplicata, Phillips, and conse- 

 quently I cannot agree with the views expressed by Mr. John Jones, of Gloucester, 

 at p. 313, &c, vol. i, of the ' Geologist' for 1858, where he considers the three forms 

 above named to be simple variations in shape of a single species, a view, however, which 

 is reciprocated by Dr. D. Brauns. I do not deny that some rare exceptional examples are 



