56 
BRACHIOPODA. 
vex ; dorsal valve flat ; beak small ; foramen minute ; loop — ? 
Lon. 4, lat. 4 lines. 
Terebratella Bourgeoisii, D’Or5. 1847, Ter. Cret. iv. p. 124. t. 518. 
f. 10-16. 
Terebratulina gracilis, Schl. var. ? 
Fossil. Chalk. France. 
23. Terebratulina? echinulata. 
Shell ovate-oblong, depressed, closely radiately striated ; striae 
slightly prickly ; margins bisinuated in front ; foramen round, 
complete; deltidium solid, concave. Lon. 18, lat. 13, alt. 9 
lines. 
Terebratula echinulata, Dujardin, 1836, Mm. Soc. Geol. France, 
ii. p. 223. f. 222. 
Terebratulina echinulata, D’Orb. Ter. Orel. iv. 63. t. 503. f. 7-11. 
Fossil. Chalk. France. 
24. Terebratulina Santonensis. 
Shell oval, depressed, radiately ribbed ; ribs granulose, curved, 
diverging towards the sides; ventral valve convex; area very 
small ; foramen small ; dorsal valve nearly flat. Lon. 9 lines. 
Terebratula Santonensis, D’JrcA. 1837, Mem. Soc. Geol. Franco, 
ii. p. 181. pi. 13. f. 14. 
Terebratella Santonensis, D’Orb. 1847, Ter. Cret. iv. p. 123. 
t. 518. f. 5-9. 
Fossil. Chalk. France. 
25. Terebratulina parracena. 
Shell rounded ; not truncated in front. 
Terebratulina parracena, (Talavignes) D’Orb. Prod. ii. p. 308. 
Fossil. U. Chalk. Fi-ance. 
26. Terebratulina megatrema. Bristol Mus. 
Shell “ moderately convex, transversely obovate, with a few' 
distinct ribs ; the beak is large and produced, with a very large 
perforation.” Lon. 3, lat. 3 lines. 
Terebratula megatrema, J. Smv. 1836, Geol. Trans, iv. p. 242 
& .343. pi. 18. f. 3. 
D’Orb. Prod. ii. p. 172. 
Fossil. U. Greensand. England. 
27. Terebratulina substriata. B.M. 
Shell oval or subpentagonal, radiately striated ; striae unequal, 
very fine, dichotomous, crossed by frequent lines of growth; 
