58 



POMPECKJ. JURASSIC FAUNA OF CAPE FLORA. [NORW. POL. EXP. 



DISCINA, Lamarck. 



Discina reflexa Sow. sp. 



PI. I. fig. 6, 7, 8, 9, (10?). 



1829. Orbicula reflexa J. D. G. Sowerby, 'Mineral Gonchology of Great 



Britain,' vol. VI. p. 4, pi. DVI. fig. 1. 

 Davidson, 'Monograph of the British fossil Brachio- 

 poda,' vol. I. part III. 'A monograph of the British 

 Oolitic and Liassic Brachiopoda,' p. 10, pi. X. fig. 8. 

 A. Oppel, 'Die Juraformation,' 53, No. 247. 

 F. A. Quenstedt, 'Der Jura,' p. 325, pi. 45, fig. 2. 

 ? H. Trautschold, 'Der Moskauer Jura verglichen mit 

 dem westeuropaischen,' Zeitschr. d. Deutsch. geol. Ges. 

 p. 390]. 

 , F. A. Quenstedt, 'Petrefactenkunde Deutschlands,' II. 



Die Brachiopoden. p. 660, pi. 60, fig. 97101. 

 , R. Lepsius, 'Beitrage zur Kenntniss der Juraforma- 

 tion im Unter-Elsass,' p. 46. 



Th. Davidson, 'Monograph of the British fossil Bra- 

 chiopoda,' vol. IV. Suppl. to the British Jurassic and 

 Triassic Brachiopoda, p. 82, pi. X. figs. 16. 

 , R. Tate and J. F. Blake, 'The Yorkshire Lias.,' p. 



414, pi. XV. figs. 5, 6. 



, E. W. Benecke, 'Beitrag zur Kenntnis des Jura in 

 Deutsch-Lothringen.' Abh. z. geol. Spez.-Karte v. 

 Elsass-Lothringen, N. F., part I. 1898, p. 22, pi. 

 I. fig. 1. 



Convex valves of Discina reflexa Sow. sp. were found together with Lin- 

 gula Beani Phill. but less frequently than that species. 



The specimens before me correspond for the most part closely with Eng- 

 lish specimens from Yorkshire. The form of the valves both in the English 

 specimens and in those found in the neighbourhood of Gape Flora, is very 

 variable; side by side with high, more conical specimens with a steeper in- 

 clination from the apex to the posterior margin, (PI. I. figs. 7, 8) occur lower, 

 cup-shaped forms (PI. I. fig. 6). The shell is ornamented with close-set, fine, 

 distinct lines of growth. The upward curve of the shell and of the lines of 



1850. 



1856. Disoina 

 1856. Orbicula 

 [1861. 



1871. 



1875. Discina 



1876. 



1876. 



1898. 



