BRITISH DEVONIAN BRACHIOPODA. 57 



Genus — Davidsonia, Bouchard, 1849. 



57. Davidsonia Verneuilii, Bouchard. Dav., Dev. Mon., PI. XI, figs. 13 — 16, and PI. 



XV, fig. 18. 



This shell is still found to be very rare in our British Devonian rocks. I have never 

 seen more than three or four examples of its attached valve ; the upper or unattached 

 valve never having turned up. A complete example has, however, been described and 

 figured by Dr. Kayser in pi. xii, fig. 9, of his 'Die Brach. des Mittel- und Ober-Devon. 

 des Eifel,' 1871, which will serve to complete the characters of the species. 



Genus — Calceola, Lamarck, 1799. 



58. Calceola sandalina, Linne, sp. Dav., Dev. Mon., PI. XX, fig. 13. 



Calceola seems still to be a very problematical fossil, but it is by almost general 

 consent excluded from the Brachiopoda. Calceola sandalina was for a long time consi- 

 dered to be a very rare English Devonian fossil, but it has since been found by Mr. 

 Arthur Champernowne to be tolerably abundant in the Middle Devonian at Daddyhole 

 Cove, Torquay, east side, Devonshire ; see a paper by Mr. Champernowne in the 

 ' Transactions of the Devonshire Association for Advancement of Science and Art,' 

 March, 1874. 



