DRACIIIOPODA. 76 



Terel)ratula Rakerisc, Dav. Mon. Ool. Brack. 1851, p. 38. pi. 5. 



f. II. 

 Tori'hmtulu IL-yscaim, Dunkerl 

 Fossil. Inferior Oolite. Northampton (Brit. Mus.). 



GJ. W.M.nnKiMiA IIkyskana. B.M. 



Shell transverse, soinewliat trij^onal, win}j;o(l, smooth ; dorsal 

 valve slightly convex, deeply de])ressed in the centre in front ; 

 ventral valve more convex, with a jjromincnt central rounded 

 ridgi- ; l)eak depressed, curved, shar])ly keek-d ; foramen minute ; 

 deltidium triangular. Lou. 5, hit. <), alt. 3 lines. 



Terehratula Ilevseana, Ihinker, 1S47, Pal. i. p. 129. pi. 18. f. 5. 



Q,u',i><l. Hdmll). p. -171. t. 37. f. 47. 

 Terel)ratuhi resupinata, Raemer, 1836, Nordd. Ool. p. 55. t. 12. 



f. 7 (not Sow.). 

 Fossil. Lias. Germany. 



68. WaLDHEI-MIA HEMISPHiERICA. B.M. 



Shell minute, hemispherical, striated ; dorsal valve flat, or 

 slightly concave ; ventral valve convex ; beak recurved, with 

 lateral rid<;es, forming a small flattened hinge-area ; foramen 

 rather huge, round, incomplete ; deltidium plates disunited. 

 Lon. 4, lat. 3j, alt. 2 lines. 



Terebratula hemisphjerica, Sow. 1829, Min. Con. vi. p. 69. t. 536. 

 f. 1. 



Desk. 1837, Soc.Lin, Normandie. 



Daridsoii,Mon. Ool. p. 64. pi. 13. f. 17, 18. 

 Terebratella hemisphjerica, D'Orb. Prod. i. p. 316. 

 Fossil. Bath Oolite. England; France. 



69. Waldheimia pala. B.M. 



Shell oval when young, afterwards elongated, and truncated 

 in front ; sides parallel, straight ; valves smooth, or with a few 

 lines of growth near the margin ; margins even ; dorsal valve 

 flat, with a longitudinal fuiTOAv, l)ecoming wide and shallow in 

 front ; beak prominent, recurved, laterally keeled ; foramen mi- 

 nute ; deltidium wide, sohd ; internal septum elongated, pro- 

 minent. Lon. 12, lat. 7, alt. 6 lines. 



Terebratula pala. Bitch. 1843, dber Terebrateln, p. 115. t. 3. 

 f. 44 ; Mem. Soc. Geol. Fr. iii. p. 228. pi. 20. f. 9. 

 Bronn, Index, p. 1244. 

 Quenst. Handb. p. 469. t. 37. f. 46. 

 Fossil. Alpenkalk. Tyrol. 



E2 



