BUACHIOPODA. 37 



men moderate ; dcltidiuni trianf^ular, coacave ; looj) short, simple. 

 Lou. IM, lat. 1L>, alt. 10 lines. 



Terebratula snluvroiilalis, Sow. 1825, Min. Con. v. p. 41). t. 4',i5. 

 f. 3. 



DesloiKj. IS.'}/, Soc. Lin. Normand. 



Morris, Cut. p. \'M). 



irOrh. Prod. i. p. 2S7. 



Ddv. Mon. Ool. p. ^(i. pi. 11. f. !», 1 1, 12, 13. 

 Fossil. Inferior Oolite. Eu^laiul ; France ; Germany. 



74. Terebratula fimbria. B.M. 



Shell orbicular, smooth when younjj ; margins more or less 

 plaited when adult ; plications rounded, numerous, often sub- 

 divided ; beak short, recurved, nearly concealing the deltidium ; 

 foramen large and round ; loop simple, short. Lon. 20, lat. 18, 

 alt. 13 lines. 



Terebratula fimbria. Sow. 1823, Min. Con. iv. p. 27. t. 326. 



Davidson, Mon. Ool. p. (il. pi. 12. f. 6-12. 

 Fossil. Inferior Oolite. Gloucestershire; France (Sart he). 



75. Terebratlla plicata. B.M. 



Shell elongated, oval, smooth when young ; margins more or 

 less plaited when adult ; plaits short, simple, rounded ; umbo of 

 dorsal valve gibbose ; larger valve with a short, scarcely recurved 

 beak ; foramen round ; deltidium small ; loop short, simj)le. 

 Lon. 33, lat. 22, alt. 1/ hnes. 



Terebratula plicata, Biickman, lS4r>, Geol. Chelt. pi. 7- f- 6. 

 Davidson, Mon. Ool. p. 60. pi. 12. f. 1-5 (not Lam.). 

 Terebratula subplicatella, D'Orb. 1849. Prod. i. p. 28/. 

 Fossil. Inferior Oolite. England ; France. 



76. Terebratula suborbicularis. B.M. 



Shell oval, inflated, smooth at the umbones, rather shaqily 

 plaited round the border; beak laterally compressed, thick, cm^ed, 

 truncated by a rather large foramen. Lon. 8, lat. 6, alt. 43 hnes. 



Terebratula suborbicularis, Miinst. 1841, Beitr. iv. p. 56. pi. 6. 

 f. 4. 



D'Orb. Prod. i. p. 204. 

 Terebratula semiplicata, Klipstein, 1844, Beitr. p. 214. pi. 15. f. 3. 

 llhynchonella ! semiplicata, D'Orb. Prod. i. p. 203. 



Fossil. Trias. Tyrol. 



