18 BRACHIOPODA. 



Kuster, Conch, vii. 21. t. 2. f. 11-13 ; t. 1. f. 13. 14. 

 Davidson, Ann. Nat. Hist. 1852, p. 364. 

 Terebratula (a) sub-vitrea {Leach), Blainv. Diet. Sci. Nat. liii. 



135. 1828. 

 Terebratula euthyra, Phil. 1844, Moll. Sicil. ii. p. 68. 1. 18. f. 8 ? 

 Gryphus vitreus, Megerle, Berl. Mag. 1811, 64. 

 Habitat. Mediterranean, iu 90 to 250 fathoms, on nuUipore 



mud (Forbes). 

 Fossil. Pliocene. Sicily. 



2. Terebratula sphenoidea. 



Shell triangularly-ovate, truncated in front, smooth ; margins 

 even, obscurely bisinuated in front ; dorsal valve convex near the 

 umbo, depressed in front ; beak prominent, scarcely curved, 

 foramen moderate, round ; deltidium conspicuous j loop short, 

 simple. Lon. 12, lat. 10, alt. 6 lines. 



Terebratula sphenoidea, Phil. 1844, Moll. Sicil. ii. p. 6/. 1. 18. f. 6. 



Broun, Index, p. 1251. 

 Fossil. Pliocene. Sicily. 



3. Terebratula septata. 



Shell oval, subquadrate, ventricose, smooth ; valves gibbous, 

 rather truncated in front, sides nearly parallel ; dorsal valve vi'\t\i 

 the front margin rather bent dowTiwards, beak prominent, thick ; 

 foramen moderate, round; deltidium soUd. Lon. 10, lat. 9, alt. 

 7 Hues. 



Terebratula septata, Phil. 1844, Moll. Sicil. ii. p. 68. t. 18. f. 7. 

 Bronn, Index, p. 1250. 



Fossil. Pliocene. Sicily. 

 4? Terebratula uva. 



Shell narrowly-oblong, gibbous, smooth, slightly translucent, 

 pale horn-colour ; margins even ; beak produced, truncated ; 

 foramen large, deltidium small, concave; loop short?. Lon. 13, 

 lat. 7, alt. 6 lines. 



Terebratula uva, Brod. 1833, Proc. Zool. Soc. 124. 



G. B. Sow. Thes. Conch, ^'ii. 353. t. 70. f. 53-55. 



Dav. Ann. Nat. Hist. 1852, Lx. p. 364. 

 Hab. Gulf of Tehuantepec (Mus. Cuming). 



5. Terebratula grandis. B.M. 



Shell oval, ventricose, smooth, becoming very thick with age ; 

 front margin obscurely biplicate; beak produced, slightly re- 

 curved, lateral ridges indistinct ; foramen large and round ; del- 



