﻿TERTIARY BRACHIOPODA. 



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The species is equally rare in Belgium. One specimen was found by M. Vincent 

 in the Lower Laeckenian Sands of Dieghem, near Brussels, and another by the late 

 Dr. Stacquey in beds of a similar age at Gand. M. Nyst informs me that they are the 

 only examples hitherto discovered. In Prance, on the contrary, it has been often found 

 in the Lower and Middle Calcaire Grossier at Grignon, Parnes, Mouchy, Chaumont, 

 Le Vevray, Les Groux, Chaussy, Vaudancourt. Also at Biarritz, Mont Alaric, Maigon, 

 Fabrezan (Pyrenees), and at Kressemberg in Bavaria. It has been well described by 

 M. Deshayes at p. 145 of the Supplement to his 'Coquilles fossiles des Environs de 

 Paris.' 



7. Terebratula grandis, Blum. Dav., Supplement, PI. II, figs. 1 — 4. 



Terebbatula grandis, Dav. Tert. Mon., p. 16, pi. i, fig. 18 ; pi. ii, fig. 8 ; 1852. 

 — — S.Wood. Sup. to the Crag Mollusca, p. 168, pi. xi, fig. 5 a — g; 



from the Cor. Crag, Sup., pi. viii, fig. 1 1 a — c ; 

 from the Red Crag, 1874. 



The exterior and muscular impressions have been fully described and illustrated in 

 my Monograph and elsewhere ; but formerly I was not acquainted with the complete 

 apophysary system or loop. In June, 1861, M. E. Deslongchamps was able to 

 develop the entire loop from a French specimen obtained by him from the neighbour- 

 hood of Nantes, and of which he published an excellent illustration in his ' Etudes 

 critiques sur des Brachiopodes nouveaux ou peu connus,' pi. viii, figs. 15, 16, Caen, 

 August, 1809. Early in 1862 Mr. S. Wood and Dr. S. P. Woodward were able 

 to work out the complete loop, with its long slender crura, of a large specimen that 

 had been obtained by the former from the Coralline Crag of Ramsholt. Of this 

 specimen, now in the British Museum, a figure will be found in PI. II of this 

 Supplement. A drawing of the loop has likewise been given by Quenstedt in his 

 ' Petrefactenkunde Deutschlands ; Brachiopoden/ pi. xlviii, fig. 23, 1871. 



Some ten examples with the loop complete have also been found by M. Nyst in the 

 Crag of Belgium ; and, in addition to these, I may mention that Mr. A. Bell has obtained 

 from the Red Crag of Waldringfield, near Woodbridge, a large number of perfect 

 bivalve specimens, with a rather more globose or elongated shape than is usual with 

 those specimens that occur in the Coralline Crag. In the Red Crag variety, which 

 does not appear to have attained the dimensions of the Cor. Crag species, the lines of 

 growth are strongly marked and projecting in some examples ; but the loop and muscular 

 impressions, which I was able to develop, entirely agree with those observable in the 

 specimens found in the Coralline Crag. T. grandis has been also obtained from the 

 Cor. Crag of Sutton and near Orford, and in the Red Crag of Walton-on-the-Naze and 



