26 brachiopoda. 



28. ?Terebratula incisa. 



Shell oval, longer than wide ; dorsal valve convex near the 

 umbo, with a shallow sinus in front ; beak recurved ; foramen 

 minute ; deltidium distinct. Lon. 1-li inch. 

 Terebratula incisa {Munster), Schlotheim, Cat. p. 75. n. 71. 



Buck, 1834, Terebrat. p. 95 ; Mem. Soc. Geol. Fr. iii. p. 204. 



Bronn, Index, p. 1238. 



Pusch, Polens Pal. t. 3. f. 16. p. 19 ?. 

 Fossil. Chalk. Poland ; Faroe. 



29. Terebratula obesa. B.M. 

 Shell oblong, ventricose, smooth ; front margin with a wide 



and shallow central depression and two angular lateral depres- 

 sions ; sides obscurely striated ; beak short and thick, incurved, 

 truncated by a large round foramen ; deltidium concealed ; loop 

 short and simple. Lon. 2\, lat. 2, alt. H inch. 



Terebratula obesa, Sow. 1825, Min. Con. v. p. 54. t. 438. f. 1. 



Broivn, lllust. Conch, pi. 54. f. 28, 29. 



B'Orb. Ter. Cret. iv. p. 101. pi. 513. f. 1-4. 



Davidson, Mon. Cret. p. 33. pi. 5. f. 13-16. 

 Fossil. U. Chalk, U. Greensand. England; France. 



30. Terebratula sulcifera. B.M, 



Shell oval, inflated, smooth, ornamented with numerous im- 

 bricating lines of growth in regvdar series from the umbones to 

 the margin ; valves nearly equally ventricose ; margins sinuous, 

 elevated in front ; beak short, very thick, rounded and recurved ; 

 foramen large and round; deltidium concealed. Lon. 22, lat. 16, 

 alt. 16 lines. 



Terebratula sulcifera, Morris Sf Dav. 1847, Ann. Nat. Hist. 1847, 

 p. 254. pi. 18. f. 7. 



D'Orb. Prod. ii. p. 172. 

 Terebratula ovoides, Raemer, 1843, Kreid.-p. 42 (not Sow.). 



Alth, Geoff. Lemberg {in Raid. Abhandl. 1850), p. 258. 



t. 13. f. 5. 

 Geinitz, Petref. 1850, t. 8. f. 5. 



Fossil. Chalk-Marl. England; Germany. 



31. Terebratula albensis. B.M. 

 Shell oval, inflated, smooth, with obscure lines of growth, be- 

 coming more distinct towards the margin ; margins flexuous, the 

 front straight, wide, angularly elevated ; dorsal valve convex, cir- 

 cular in young specimens ; ventral valve gibbose ; beak thick, 

 rounded, recurved; foramen moderate, round; deltidium con- 

 cealed. Lon. 19, lat. 14, alt. 12 lines. 



