48 
BRACHIOPODA. 
114. Terebbatula Abchiaci. 
Shell subcircular, depressed, smooth; edges sharp; margins 
even ; ventral valve rather more convex than dorsal ; beak slightly 
curved; foramen apical, minute; deltidium triangular; interior 
of dorsal valve with a cardinal process, dental pits, and elongated 
adductor impressions. Lon. 26, lat. 25, alt. 9i lines. 
Terebratula Archiaci, Verneuil, 1850, Bull. Soc. Geol. Fr. t. vii. 
p. 40. pi. 2. f. 2. 
Fossil. Devonian. Astm-ias. 
115. Terebbatula Haimeana. 
Shell circular, depressed, smooth, with obscure lines of growth ; 
valves nearly equally convex ; margins even ; beak obtuse, late- 
rally keeled, recurved, truncated by a small round foramen ; del- 
tidium nearly concealed, solid. Lon. 28, lat. 30, alt. 16 lines. 
Terebratula Haimeana, Dav. April 1852, Ann. Not. Hist. pi. 14.f. 1 . 
Fossil. Devonian. Prussia. 
2. TEREBRATULINA. 
Shell finely striated ; valve auriculate ; beak straight ; delti- 
dium usually rudimentary; foramen incomplete; loop short, 
rendered annular by the union of the oral processes (fig. 4). 
Terebratulae striatse, Morris, 1846, Journ. Geol. Soc. p. 385. 
Terebratulinalcaput-serpentis),H’Or6. 1848, Sc. Nat.Vm. 67 . 
Dav. 1852, Ann. Nat. Hist. p. 365; Mon. Cret. p. 34. 
Terebratulse annuliferse, Quenstedt, 1851, Handbuch, p. 462. 
Terebratulina caput-serpentis. 
Fig. 4. Fig. 5. 
Fig. 4. — Dorsal valve of a young specimen in which the oral processes are not 
yet completely developed. 
Fig. 5. — Shell with the animal ; the intestine is seen projecting above the oral 
aperture and fringe. The oesophagus passes through the annular part of the loop. 
