RHYNCHONELLA CONCINNA. 65 



BRACIIIOPODA. 



Terebratula biplicata Brocchi sp. 



Anomia biplicata Buocchi, 1814, Concliiologia Fossile Subapemiina, p. 4-69, PI. x, fig. 8. 

 Terebratula biplicata Sowerby, 1815, Min. Conch. Gr. Brit., I, p. 201, PI. xc, and V, p. 53, PI. ccccxxxvii, 

 figs. 2, 3, 1825. 



" •• D'Orbigny, 1847, Paleont. Prang., Terr. Out, IV, p. 95, PI. dxi, figs. 9-15. 



" " Davidson, 1852-55, Monogr. Brit. Foss. Braeh., I, Pt. ii, p. 55, PI. vi, figs. 1-49. 



Three specimens, complete, of the form represented by Davidson's figures 

 8 and 9. Coll. Bird. 



Locality and Position. — Vicinity of Abeih ; referred by Fraas to the 

 Glandarius zone of the Cenomanian, the lowest of his nine zones of Lebanon 

 si rata. D'Orbigny speaks of the species as '■ caracteristique ties couches les 

 plus inferieures de l'etage cenomanien." (loc. cit.) Davidson states that 

 in England it is found in the Gault, Upper Greensand, and Lower Chalk ; 

 upon the Continent, in the Gault and Upper Greensand. 



Rhynclionella concinna Sowerby sp. 



Terebratula concinna Sowerby, 1815, Min. Conch. Gr. Brit., I, p. 192, PI. Ixxxiii, fig. 0. 



" " Vox Btjch, 1838, Class, et Dcsrr. des Terebrat, Mem. Soc. Geol. France, III, p. 144, 



PI. xiv, fig. 14. 

 Rhi/nchonella concinna D'Orbigny, 1847, Prodrome, I, p. 315. 



" Davidson, 1851-52, Mom.gr. Brit. Foss. Brach., I, Pt. Ill, p. 88, PI. xvii, figs. 6 1 -' 



Five specimens, in the best condition and of typical form, admirably 

 figured by von Buch. Four adult, one younger. Coll. Bird. 



Locality and Position. — Fraas recognized this well-known European 

 species in the Older Brown Jura bed of Mejdel esh Shems, whence these 

 specimens were probably obtained. D'Orbigny refers the species to his 

 Bathonian stage. Davidson mentions it as "abundant in the Great Oolite 

 of many localities in England." (loc. cit.) 



