URACIilOl'UDA. Wt) 



Tercltnitulii liiim. Di-frmice, Dirt. Sr. Nat. 1828, t. liii. p. 15(i. 



]y()rh. Tt-r. Crc'l. iv. p. !'S. pi. ."j12. 1'. 1-,";. 

 TtTi-bnitulu pentiinguiiita. Woodward, Geol. Norf. 1833, pi. (i. 



i: 10. 

 TtMrhratula vcntro-plnim, Ramer, Nordd. Ool. p. 51. t. 2. 1'. 7- 

 Tcnl)nitiil!t Il.'licitiiiiiii, irOrb. 1817, 7Vr. Crr't. pi. oil. f. o, 11. 

 Tcrcbratulu s|)iiuilusu, Morris, 1817, Ann. Nat. Hist. .\.\. p. 2r».'<. 



pi. 18. f. 6. 

 TfiThratiilu sex-radiiitu, J. Sow. 1850, Dixoii^s Geol. Susseu, 



p. 318. pi. 27. 1". 10. 

 Kin<;eiia lima, Davidson, Mon. Cret. p. 42. pi. 4. f. 15-28; pi. 5. 



f.'l-J. 

 ? Terebratula arenosa, Deshayesii, subconcava, et subarenosa, 



D'Archiac, 1847, Mem. Soc. Geol. Fr. ii. pt. 2. 



Fossil. Gault, Upper Greensand, Chalk. England ; France. 



*** Doubtful species. 



5. Megkhlia? Wacoensis. 



Shell subpcnta<;onal, ventricose, smooth ; margins even, front 

 straight ; dorsal valve convex, with indications of a long internal 

 septnm ; ventral valve gibbose ; beak obtuse, recnrved, laterally 

 keeled ; foramen small and round ; deltidium distinct. Lon. 9, 

 lat. 8, alt. 6^ lines. 



Terebratula Wacoensis, Runner, 1852, Kreid. Texas, p. 81. t. (i. 

 f. 2. 



Fossil. Chalk. Guadaloupe. 



6. Megerlia? ovata. B.M. 



Shell oval or elongated, depressed ; surface ornamented with 

 minute, wavy, spinulose striae ; dorsal valve nearly tiat, with a 

 central depression in front, increasing with age ; ventral valve 

 convex ; beak jiroduced, nearly straight, lateral ridges distinct ; 

 foramen moderate, circular; deltidmm snuill, complete. Lon. \\), 

 lat. 13, alt. 11 lines (large specimen). 



Terebratula ovata, Sowerhy, 1812, Min. Con. i. j). 46. t. 15. f. 3. 

 Davidson, Mon. Cret. p. 47. t. 4. f. 6-13 (not Mantell, Geol. 

 S. Downs, 1822). 

 Terebratula lachrymosa, D'Orb. 1847, Ter. Cr^t. iv. p. 99. pi. 512. 



f. 6-11. 

 Terebratula Keyserlingi, D'Arch. 



Fossil. Upper Greensand. England; France. 



¥5 



