40 brachiopoda. 



84. Terebratula antiplecta. 



Shell obovate, ventricose, smooth ; margin strongly sinuated 

 in front ; dorsal valve convex, with two front and two lateral de- 

 pressions ; ventral valve with three depressions in front ; beak 

 not prominent ; foramen minute ; deltidium double, triangular. 

 Lon. 8, lat. 7, alt. 5 lines. 



Terebratula antiplecta. Buck, 1834, Ueher Ter. 80. t. 2. f. 39 ; 

 Mem. Soc. Geol. Fr. 1838-39, 1. 1 11. p. 187, pL 1 7- f. 8. 

 Bronn, Index, p. 1229. 

 Quenst. 1851, Handb. p. 465. 

 Fossil. Jura {Alpenkalk"?). Near Salzburg, T3rrol. 



85. Terebratula inversa. B.M. 



Shell pentagonal, deeply folded, smooth ; margins strongly 

 3-plaited ; dorsal valve flat near the umbo, with two deep angular 

 furrows in front ; ventral valve with a central and two lateral 

 depressions ; beak small. Lon. & lat. 6, alt. 3^ lines. 



Terebratula inversa, Quenstedt, 1851, Handb. p. 465. t. 37. f. 22. 



Fossil. Trias {Alpenkalk). Ilallstadt. 



S^. Terebratula reflexa. 



Shell small, subpentagonal, tumid, smooth ; dorsal valve much 

 depressed in front, with a small longitudinal ridge in the middle ; 

 ventral valve with two longitudinal rounded ridges divided by a 

 small centi'al furrow, sides depressed ; beak small, cur\'ed ; aper- 

 ture minute ; area very wide. Lon. 4, lat. 4, alt. 2^ lines. 



Terebratula reflexa, Koninck, 1844, Descr. p. 298. pi. 20. f. 4. 

 D'Orb. Prod. i. p. 151. 



Fossil. Curb. Belgium. 



■B* 



87? Terebratula nucleata. B.M. 



Shell subcircular, smooth, with a deep,tfounded sinus in the 

 centre of the dorsal valve in front ; ventral valve with a slight 

 dorsal ridge ; beak very prominent, inflated, recurved ; foramen 

 moderate ; deltidium concealed ; loop very small. Lon. 8, lat. 8, 

 alt. 6 lines. 



Terebratula nucleata, Schlotheim, 1820, Petr. p. 281. 



Buck, Man. Soc. Geol. Fr. iii. pi. 20. f. 10. 



Zieten, 1830, Petref. p. 53. pi. 39. f. 10. 



Quenst. Handb. p. 469. t. 3/. f. 40-45. 

 Fossil. Coral Rag. Germany ; France. 



