NO. 2.] DESCRIPTION OF THE FOSSILS. 55 



1844. lAngula Beani. J. Morris, 'Catalogue of the British Fossils.' 2nd edit. 



p. 138. 

 1856. „ „ A. Oppel, 'Die Juraformation,' § 53, No. 248. 



1856. „ „ F. A. Quenstedt, 'Der Jura,' p. 3.^2, pi. 47, fig. 17. 



[1861. „ „ ? H. Trautschold, 'Recherches geologiques aus environs 



de Moscou.' Bull de la Soc. imper. des Natural, de 



Moscow, p. 68, pi. V. fig. 1]. 

 [1861. „ „ ? H. Trautschold, 'Der Moskauer Jura verglichen mit 



dem westeuropaeischen.' Zeitschr. der Deutsch. geoi. 



Ges. p. 389]. 

 1869. „ „ 0. Terquem et E. Joudry, 'Monographie de I'Etage 



Bathonien dans le departement de la Mo.selle.' Mem. de 



la Soc. geol. de France (2), vol. IX. p. 135. 

 1869. „ „ D. Brawns, 'Der mittlere Jura im Nordwestlichen 



Deutschland,' p. 292. 

 1871. „ „ F. A. Quenstedt, 'Petrefactenkunde Deutschlands.' II. 



Die Brachiopoden, pi. 60, figs. 80—82 (not 83). 



1875. „ „ R. Lepsius, 'Beitrage zur Kenntniss der Jura-Forma- 



tion im Unter-Elsass,' p. 45, pi. 11. fig. 2. 



1876. „ Th. Davidson, 'Monograph of the British fossil Brachio- 



poda.' Vol. IV. Suppl. to the British Jurassic and Trias- 

 sic Brachiopoda, p. 78, pi. IX. figs. 10—12, (14 ?). 



1882. „ „ H. Haas und C. Petri, 'Die Brachiopoden der Jurafor- 



mation von Elsass-Lothringen.' Abhandl. z. geol. Spe- 

 zialkarte v. Elsass-Lothringen, vol. II. p. 311, pi. 

 XVII. figs. 5-10. 

 Remains of Lingula Beani Phill. occur in abundance, but generally only 



in fragments. The most perfect, and, for purposes of specific identification, 



most important pieces are figured on PI. I. figs. 2—5. 



The external surfaces of these pieces, which vary considerably in size 



(up to 25 mm in length), show the close-set narrow but distinct lines of 



growth. On the large valve of full-grown individuals, the mesial longitudinal 



ridge, issuing from the beak along the middle, can be clearly distinguished. 



From this ridge the valve slopes gently towards the lateral edges. In the middle 



