BRACHIOPODA. 
67 
34. Waldheimia numismalis. B.M. 
Shell depressed, somewhat pentagonal, smooth, with distant 
concentric striae ; both valves with a sinus in front ; beak short, 
keeled; foramen minute ; deltidium wide and short ; loop elon- 
gated, reflected. Lon. and lat. 11-13, alt. 4-6 lines. 
Terebratula numismalis, Val. in Lamk. 1819, Hist. vii. 334. n. 1/. 
Brug. Encyc. Me'th. t. 240. f. 1. 
Buell, Mon. Tereb. 84. n. 4. 
Desk. E. M. hi. 2028. n. 18. 
Zieten, Petref. t. 39. f. 4. 
Davidson, Mon. Ool. p. 27. pi. 5. f. 1-3. 
Ratmer, Nordd. Ool. p. 47. 
Quenst. Handb. p. 467- 1. 37- f. 32, 33. 
Terebratula orbicularis {Schlotheim), Zieten, Petref. Wiirt. t. 39. 
f. 15. 
Terebratula Cor, Val. in Lam. Hist. Nat. 
Dav. Ann. Nat. Hist, June 1850, pi. 15. f. 22. 
Terebratula pentagona, Munster, in Cambridge Museum ? 
Terebratula quadrifida, Quenst. Handb. p. 467. t. 37- f. 28. 
Fossil. Lias. Britain; France; Wurtemberg. 
35. Waldheimia quadrifida. B.M. 
Shell broader than long, somewhat pentagonal, depressed, pro- 
duced into four angles in front ; valves with corresponding ridges 
and depressions ; beak small, with acute lateral ridges ; foramen 
moderate; deltidium double, obtuse ; loop elongated, reflected. 
Lon. 14, lat. 18, alt. 7 lines. 
Terebratula quadrifida, Val. in Lam. 1819, An. sansVert. vi. p. 35. 
Buck, Mem. Soc. Geol. France, hi. p. 190. pi. 17. f. 3. 
Davidson, Mon. Ool. p. 28. pi. 3. f. 8-10; Ann. Nat. Hist. 
June 1850, pi. 14. f. 35. 
Fossil. Lias (Maidstone). England; France. 
36. Waldheimi.\ Causoniaxa. 
Allied to T. cornuta, but always much wider, and the two pro- 
jections from the pallial region wider apart. 
Terebratula Caiissonia, D’Orb. 1847, Prod. i. p. 221. 
Fossil. Lias. France. 
37. Waldheimia cornuta. B M. 
Shell smooth and shining, irregularly pentagonal, longer than 
wide ; valves equally convex, deeply indented in front, with cor- 
responding projections and depressions ; beak large, recurved, 
with strong lateral ridges ; foramen moderate ; deltidium double ; 
