29. Lituola nautiloidea 



30. Rotalina Voltziana 



32. umbilicata 



396 Mr. Weaver 07i M. Alcide d'Orbigny's Vie*m 



Localities. 



28. Cristellaria Gaudryana Only at St Germain: rare, 



' Very common at Sens in the complete state, at 



St. Germain only young, and adult very 



rarely at Meudon. Occurs also in the chalk 



of England. 



Very common at Meudon, St. Germain, and in 



England. 



_, ■».. , V . f Common at St. Germain, Meudon, and in 



31. Micneliniana ... ■< t7> i j ^ c. 



X England ; rare at Sens. 



' Common at Meudon and St. Germain ; rare at 



Sens and in England ; common also in the 



tertiary tracts of Austria. Its analogue is 



found living at Rimini in the Adriatic, there 



being no difference between the fossil and 



living species. 



St. Germain, Meudon, and England : rather 



33. crassa j ^^^^^ » 



r" J- • /St. Germain, England, and upper chalk of 



34. Lordieriana ...-j^ Maestricht. 



35. Globigerina cretacea St. Germain and England. 



3g. elevata Common near Sens; rare in England. 



37. Truncatulina Beaumontiana. Meudon and England : rare. 



^„ _ ,. T • r Common at St, Germain and Meudon ; rare at 



38. Rosahna Lorneiana j Sens and in England. 



39. Clemen tiana Rare at St. Germain, more common in England. 



40. Valvulina gibbosa St. Germain : rare. 



41. Verneuilina tricarinata St. Germain and Sens : rather rare. 



-, ,. , ,^ r Very common at Meudon : rare at St. Germain 



42. Bulimma obtusa | ^^^ j„ England. 



, ,. f Very common at Meudon, St. Germain, Sens, 



43. obhqua | J^^ -^ England. 



• L-T r Very common at Sens : rare at Meudon, St. 



44. vanab.hs | Germain, and in England. 



, . f Very common at Meudon, St. Germain, and 



45. brevis | g^^^^ 



46. Murchisoniana ...St. Germain and England: rare. 



47. Uvigerina tricarinata Sens: very rare. 



,„ _ ,. . ^ r Very rare at Sens and St. Germain ; very com- 



48. Pyrulma acuminata | mon at Meudon. 



,^ _ J . f Meudon, St. Germain, and Sens : rather com- 



49. Gaudryma rugosa -j ^^^ ' 



.J f Rather common at Meudon, Sens, St. Germain, 



^' P"P°^^^^ 1 and in England. 



51. TextuLaria trochus Only at Meudon. 



r Sens, Meudon, St. Germain, and England, 



53. Baudouiniana St. Germain and Meudon: rare. 



54. Sagrina rugosa St. Germain and Meudon. 



From the preceding list it appears, that of the fifty-four 

 species found in the white chalk of the Paris basin, thirty- 

 eight occur at Meudon, thirty-three at Saint Germain, and 

 twenty-eight at Sens: of these numbers, nine are peculiar to 

 Meudon, two to Saint Germain, and six to Sens, while all 

 the others are simultaneously common to two or three locali- 

 ties, thus proving the perfect identity of the beds. It will be 

 seen also, that of these fifty-four species, twenty-two are com- 

 mon to the white chalk of England also. 



" "* v^ithout being common 



