BRACHIOPODA. 
99 
separate ; dorsal valve depressed in the centre ; loop elongated, 
doubly attached ; central septum more or less elevated, some- 
times touching the opposite valve. Lon. 7> lat. 7> alt. 4 lines. 
Terebratula crenulata, G. Sowerby, Thes. Conch, vii. p. 358. t. 71 • 
f. 96, 97, 98. 
Terebratella crenulata, Dav. Ann. Nat. Hist. 1852, p. 368. 
Hab. Santa Cruz. 
2. Magas Evansii. 
Shell subovate, uith a few unequal, bifurcating ribs, pale red ; 
beak tapering, slightly recurved, with well-defined lateral ridges; 
foramen incomplete ; deltidia small ; area flattened ; dorsal valve 
rather flat ; loop elongated, doubly attached ; septum produced, 
nearly touching the opposite valve. Lon. 4, lat. 3^, alt. 1^ lines 
(figs. 11, 12). 
Terebratella Evansii, Davidson, 1852, Ann. Nat. Hist. p. 368 ; 
Proc. Zool. Soc. p. . pi. . f. 7-9. 
Hab. New Zealand. (Mus. Cuming.) 
3. Magas Cumingii. 
Shell oval, thick, smooth, white, shghtly tinged with red ; beak 
produced, tapering, slightly ciuved, grooved to the summit ; area 
triangular, concave ; deltichum obsolete ; dorsal valve with a 
prominent muscular fulcrum ; loop doubly attached ; sejjtum 
elevated, reaching the ventral valve. Lon. 5, lat. 4, alt. 2i lines. 
Terebratella Cumingii, Davidson, 1852, Ann. Nat. Hist. p. 368; 
Proc. Zool. Soc. p. . pi. . f. 10-16. 
Hab. New Zealand. (Mus. Cuming.) 
4. Magas pumila. B.M. 
Shell oval, smooth, ornamented with radiating coloured bands; 
dorsal valve nearly flat, or slightly concave ; ventral valve deep, 
w’ith a well-defined hinge-area ; beak recmwed ; foramen minute ; 
deltidium rudimentary. Lon. 4, lat. 3, alt. lines (figs. 9, 10). 
Magas pumila, Sowerby, 1818, iT/ire. Con. ii. p. 40. t. 119. f. 1-5. 
Park. Org. Rem. p. 227. ph 7. L 14. 
Brongn. Env. Paris, pi. 4. f. 9. 
Defr. Diet. Sc. Nat. xxviii. p. 13. f. 1. 
Bronn, Leth. Geog. p. 662. pi. 30. f. 1. 
D’Orb. in March. Russia, ii. p. 495. pi. 43. f. 27-30; Ter. 
Crdt. iv. p. 54. pi. 501. 
Bouchard Sf Dav. Bull. Soc. Geol. France, v. 2nd ser. p. 139. 
pi. 2. f. 1-11. 
F2 
* 
