100 



BRACHIOPODA. 



Magas pumila, Sow. Thes. vii. p. 62. pi. 1. f. 7-9. 

 Dav. Ann. Nat. Hist. v. pi. 15. f. 2, 1850. 

 Quenst. Handb. p. 476. t. 38. f. 15. 

 Magas truncata, Rose, in Woodw. Geol. Norf. t. 6. f. 9. 

 Magas magna et punctata, Woodw. Synopt. Table, p. 22. 

 Terebratula concava, Lamarck, 1819, An. sans Vert. \i. p. 251. 

 no. 26. 



Dav. Ann. Nat. Hist. v. June 1850. 

 Desk. Lam. ed. 2. vii. no. 26. 

 Terebratula (G.) magas, Blainv. Man. Malac. p. 512. t. 54. f. 1, 



1825. 

 Terebratula pumila, Buck, Mem. Soc. Geol. France, iii. 1st ser. 

 p. 216. pi. 19. f. 5. 



Fossil. Chalk. England; Belgium; France; Russia. 



5. Magas orthiformis. 



Shell semicircular, wedge-shaped, depressed, ornamented with 

 obscure, unequal radiating plaits, crossed by distinct lines of 

 growth ; hinge-line straight, nearly as wide as the shell ; dorsal 

 valve flat ; ventral valve convex, truncated at the beak ; area 

 flat; foramen a wide, angular notch, bored by the deltidia. 

 Lon, 4, lat. 4^, alt. 3 lines. 



Terebratula orthiformis, D'Archiac, 1847, Mem. Soc. G4ol. Fr. 



2 ser. p. 333. pi. 22. f. 4. 

 Terebratclla orthiformis, D'Orb. Prod. ii. p. 173. 

 Orthis niillepunctata, Koninck. 

 Magas orthiformis, Dav. Monogr. Cret. Brach. p. 22. 



Fossil. U. Greens and. Belgium. 



« 



7. BOUCHARDIA. 



Shell with a minute foramen at the apex of the beak ; delti- 

 dium solid ; apo])hysis anchor-shaped, the central septum being 

 furnished with two short lamellae. 



Terebratula, § E, Blainv. D. S. N. liii. 145, 1828. 

 Bouchardia (rosea), Davidson, Bull. Soc. Geol. France, 1849; 

 Ann. Nat. Hist. 1852, p. 372. 



King, Permian Fossils, p. 81, 1850. 



