﻿LINGULA. 



105 



Genus Lingula. 



Lingula squamitormis, Phillips. PI. XX, figs. 11, 1:2. 



Lingula squamifoemis, Phillips. Geol. of Yorkshire, vol. ii, pi. ix, fig. 14, 183G. 



— — Dai\ A Monograph of British Carboniferous Brachiopoda, 



Sec, p. 20."i, pi. xlix, figs. 1—10, 1863. 



— m ola, Salter. Quarterly Journal of the Geol. Soc, vol. xix, p. 480, 1SG3. 



Sjjcc. Char. Shell longitudinally oblong, one third or less longer than wide, with 

 sub-parallel sides, the broadest towards the anterior extremity. The anterior portion is 

 gradually curved on either side, the beak being slightly angular at its extremity in the 

 dorsal valve. The valves are slightly convex, but somewhat depressed along the middle. 

 The external surface in both valves is covered with numerous fine concentric stria) or lines 

 of Growth. Dimensions variable — 

 Length 9, width 5 lines. 



Obs. This shell, which I cannot distinguish, when well-shaped, from the Carboni- 

 ferous Lingula squamiformis occurs in vast numbers, together with Discina nitida, in the 

 greenish shales of Sloly or Plaistow Mill quarry, parish of Shirwell, in North Devon. It 

 is, however, difficult to obtain specimens preserving their natural shape, almost every 

 example being deformed, or put out of shape from the effects of pressure or cleavage. 



Genus Calceola, Lamarck. 



Calceola sandalina, Linn, (sp.) PI. XX, fig. 13. % 1 



Anomia sandalium, Linn. Gmel. Syst., p. 3349, 1/88. 

 Calceolites sandaiinus, Schlot. Petrif., i, p. 173, 1820. 

 Calceola sandalina, Lam. Syst., p. 139, 1801. 



— — Phillips. Pal. Foss., pi. Ix, fig. 102, 1841. 



— — Davidson. Introd. Brach., vol. i, pi. ix, figs. 224—228, 1853. 



Within the last few years the researches of Professors Suess and Lindstrom have 

 thrown considerable doubt as to this genus and species belonging to the Brachiopoda, 

 among which it had found a home during so many years. If a Brachiopod, it seems the 

 most abnormal of all its genera. 



We will therefore merely mention its existence in our British Devonian rocks, 

 where it was found many years ago by Mr. Godwin- Austen, at Ogwell, near Chircombe 

 Bridge, in Devonshire. It is a common fossil in the Devonian Rocks of Couvin, in 

 Belgium ; in the Eifel ; and at Nehou, in France, &c. 



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