BRACHIOPODA. 
65 
19. Terebratulina biauriculata. 
Shell angularly ovate, depressed, radiately ribbed ; ribs ele- 
vated, angular, irregularly fasciculated ; beak tapering ; front 
truncated ; ears short. Lon. 4 lines. 
Terebratulina auriculata, D’Orh. 1847, Ter. Cret. iv. p. 58- 
pi. 502. f. 3-7 (not Ramer). 
Terebratulina biauriculata, D’Orb. Prod. ii. p. 85. 
Terebratulina striata, Wahl. var. ? 
Fossil. Neocomian. France. 
20. Terebratulina Floridana. 
Shell subpentagonal, with obscure radiating strife ; valves 
slightly biplicated ; beak produced, straight ; foramen small. 
Lon. 7i, lat. 6| lines. 
Terebratula Floridana, Morton, 1834, %«. Cref.p.72. pi. IG. f. 7- 
Terebratulina Floridana, D’Orb. Prod. ii. p. 238. 
Fossil. Chalk. Alabama, U.S. 
21. Terebratulina gracilis. 
Shell orbicular, striated ; dorsal valve flat or concave ; ventral 
valve convex; beak small, recurved; foramen small; deltidium 
rudimentary; ears small; striae fine, very variable in number 
(18-50), granulated, augmenting in number by the intercalation 
of smaller ribs towards the margin. Lon. 5^, lat. 5, alt. 2 lines, 
Terebratulites gracilis, Schl. 1813, Leonh. Min. Tasch. vii. p. 1 1 2. 
t. 3. f. 3 ; Petref. p. 270. no. 35, 1820. 
Terebratula gracilis, Schl. 1832, Petref. 
Buch, Mem. Soc. Geol. France, \st ser. hi. p. 167.pl. 16. f. 1 1. 
Geinitz, Petref. Kreid. pi. 16. f. 13; GrundrissVerst .\i\. 21. 
f. 10. 
Reuss, Bohem. Kreid. p. 49. pi. 26. f. 1, pi. 42. f. 24. 
Pur/gaard, Bull. Soc. Geol. France, vii. p, 634. 
Quenst. Handh. p. 462. t. 37- f. 8, 9. 
Terebratulina gracilis, D’Orb. inMurch. Russia, ii. p. 499. pi. 43. 
f. 24-26 ; Ter. Crtd. iv. p. 61. t. 503. f. 1-6. 
Dav. Mon. Cret. p. 38. pi. 2. f. 13-16. 
Terebratula ornata, Ramer, 1840, Nord. Kreid. p. 40. no. 26 
pi. 7. f. 10. 
Terebratulina ornata, D’Orb. Prod. ii. p. 258. 
Terebratula rigida, Sowerby, 1829, Miw. CoM.vi. p. 69. pi. 536. f. 2. 
Dav. Mon. Cret. pi. 2. f. 17- 
Fossil. Chalk. England; Belgium; France; Germany; Russia. 
22. Terebratulina? Bourgeoisii. 
Shell minute, orbicular, depressed, radiately striated ; strife 
smooth, curved, diverging towards the sides ; ventral valve con- 
