106 



BRACHIOPODA. 



7. MeGERLIA? ARCUATA. 



Shell oval, attenuated posteriorly, slightly truncated in front, 

 oniamented with diverging spinulose strije ; dorsal valve gibbous 

 at the umbo, depressed in front ; beak pointed, foramen minute, 

 deltidium elongated, triangular, double. Lon. 5, lat. 3i, alt. 3 

 lines. 



Terebratula arcuata, Rcemer,\MO, Nordd. Kreid. p. 44. t. 7- f- 1^- 



Bronn, Index, p. 1229. 

 Fossil. Neocomian {Hilsconglomerate). Westphalia. 



8. MeGERLIA? RUGULOSA. B.M. 



Shell oblong, front margin ti'uncated or slightly indented, sur- 

 face minutely wTinkled ; dorsal valve convex, sometimes de- 

 pressed in front ; ventral valve deep ; beak rather produced, la- 

 teral ridges obscure ; foramen large, cii-cular ; deltidium small ; 

 loop ? Lon. 11, lat. 8, alt. 7 lines. 



Terebratula rugulosa, Morris S)- Davidson, 1847, Ann. Nat. Hist. 



XX. p. 253. pi. 18. f. 5. 



Dav. Mon. Cret. p. 49. pi. 4. f. 14. 

 Terebratula disparialis (part.), D'Orb. Ter. Cret. 1847, iv. p. 100. 



pi. 512. f. 12, 13 (not 16, 17, which represent T. squamosa). 

 Fossil. U. Greensand; Chalk-marl. England; France. 



9. Megerlia? Verneuili. 



Shell oval, elongated, depressed, ornamented with squamose 

 lines of growth and (hverging spinulose strise ; margins slightl\- 

 tlexuose in front ; beak produced, nearly straight, truncated by 

 a large circular foramen ; deltidium elongated. Lon. 5, lat. 3, 

 alt. 2 lines. 



Terebratula VemeuiU, D'Arch. 1847, Mem. Geol. Sac. Fr. ii. 

 p. 326. pi. 20. f. 4. 



D'Orb. Prod. ii. p. 172. 

 Fossil. 17. Greensand. Belgium. 



10. Megerlia? NANA. B.M. 



Shell small, orbicular, depressed, smooth, with obscure radiating 

 furrows, and numerous lines of growth near the mai-gin ; punc- 

 tation conspicuous ; dorsal valve flat, with a strong internal me- 

 dian plate ; ventral valve convex ; beak rounded, much recurved ; 

 foramen small ; deltidium concealed *. Lon. 6, lat. 5i, alt. 3i 

 lines, 



* Three species having been sent with this name, by Dr. Braun, the 

 description is taken from the specimen to which the label was aflbced. 



