68 BRACHIOPODA. 



loop simple, nearly reaching the front margin. Lon. 20, lat. 13, 

 alt. 12 lines. 



Terebratnla comuta. Sow. Mm. Con. 1825, v. p. 66. pi. 446. f. 4. 



Davidson, Mon. Ool. p. 29. pi. 3. f. 11-18. 

 Terebratnla vicinahs. Buck, 1838, 2Iem. Soc. Geol. France, iii. 

 p. 192. pi. 17. f. 5 (not Schloth.). 



Rcemer, Nordd. Ool. p. 47. 

 Fossil. lAas. England ; France ; Germany. 



38. Waldheimia bidentata. 



Shell small, oblong, ventricose, contracted and indented in 

 front ; valves smooth, each with a deep mesial furrow in front ; 

 dorsal valve inflated ; beak very small, keeled; foramen minute. 

 Lon. 7> lat. 4, alt. 4 lines. 



Terebratnla bidentata, Zieten, 1830, p. 59. pi. 44. f. 3 (not His.). 

 Terebratnla sub-bidentata, D'Orb. Prod. i. p. 288. 

 Fossil. Inferior Oolite. Germany. 



39. Waldheimia vicinalis. B.M. 



Shell trigonal or oval, truncated and indented in front, smooth ; 

 valves equally convex, each with a shallow sinus in front, between 

 very obtuse corresjionding ridges ; edges thick, obtuse ; margins 

 quite even ; beak small, recm-ved, sharply keeled at the sides ; 

 foramen minute; loop elongated, reflected. Lon. 11, lat. 9, 

 alt. 6^ lines. 

 Terebratnla vicinalis, Schl. 1820, Petref. p. 281*. 



Buck, Mem. Soc. Geol. France, iii. p. 192 (excl. plate). 

 Terebratnla digona, Zieten, pi. 39. f . 8 ? (not Sow.). 

 Terebratnla comuta, Earner (not Sow.). 



Terebratnla numismalis 8, Quenst. Handb. p. 467. t. 37. f. 26. 

 Fossil. Lias. Wurtemberg. 



40. Waldheimia Rehmanni. 



Shell vndely ovate, or subpentagonal, truncated and slightly 

 indented in front, rounded at the sides, ventricose, smooth ; beak 

 small, recurved, sharply keeled ; foi'amen minute ; deltidium 

 triangular, solid. Lon. 10, lat. 9, alt. 6 lines. 



Terebratnla Rehmanni (Buch), Rcemer, 1839, Nordd. Ool. p. 21. 



1. 18. f. 11. 

 Fossil. Lias. Saxony. 



* The reference made by Schlotheim to Parkinson, iii. 16. f. 4, shows 

 that he did not intend the shell afterwards named T. comuta by 

 Sowerby. 



J 



