106 
BRACHIOPODA. 
7. MeGERLIA? ARCUATA. 
Shell oval, attenuated posteriorly, slightly truncated in front, 
ornamented with diverging spinulose striae ; dorsal valve gibbous 
at the umbo, depressed in front ; beak pointed, foramen minute, 
deltidium elongated, triangular, double. Lon. 5, lat. 3-2, alt. 3 
lines. 
Terebratula arcuata, Earner, 1840, Nordd. Kreid. p. 44. t. 7. f- 18. 
Bronn, Index, p. 1229. 
Fossil. Neocomian {Hilsconglomerate). Westphaha. 
8. MeGERLIA ? RUGULOSA. B.M. 
Shell oblong, front margin truncated or shghtly indented, sur- 
face minutely wrinkled ; dorsal valve convex, sometimes de- 
pressed in front ; ventral valve deep ; beak rather produced, la- 
teral ridges obscure ; foramen large, cu’cular ; deltidium small ; 
loop ? Lon. 11, lat. 8, alt. 7 lines. 
Terebratula rugulosa, Morris 8f 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. Crdt. 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 diverging spinulose striae; margins shghtly 
flexuose in front ; beak produced, nearly straight, truncated by 
a large circular foramen ; deltidium elongated. Lon. 5, lat. 3, 
alt. 2 lines. 
Terebratula Vemeuih, D’Arch. 1847, Mem. Geol. Soc. Fr. ii. 
p. 326. pi. 20. f. 4. 
D’Orb. Prod. ii. p. 172. 
Fossil. U. Greensand. Belgium. 
10. Megerlia? nana. B.M. 
Shell small, orbicular, depressed, smooth, with obscure radiating 
furrows, and numerous lines of gi-owth near the margin ; punc- 
tation conspicuous ; dorsal valve flat, with a strong internal me- 
(han plate ; ventral valve convex; beak rounded, much recurved ; 
foramen small ; deltidium concealed *. Lon. 6, lat. Si, alt. dj- 
lines. 
* Three species haring been sent with this name, by Dr. Braun, the 
description is taken from the specimen to which the label was afiixed. 
