Nomenclature of the Foraminifera. 39 



O. macropora is common in the Bryozoan Chalk of Maestricht, 

 and appears there as the first representative of a genus and spe- 

 cies which (with some others, namely Lagena, Rotalia Turbo, 

 Calcarina Spengleri, Planorbulina Poeyi, and Amphistegina vul- 

 garis), first occurring in that deposit, have continued through 

 the Tertiary period to our own day. 



36. Orbulites Pileolus. Hist. An. s. Vert. vol. ii. p. 197, No. 6. 

 " O. uno latere convexa, altero concava ; margine sulco exarato. 



Habite : fossile de . . . . Mon cabinet. Ses pores ne sont point 

 apparens." 



This is probably a thick and conical individual of Orbitolina 

 concava. Lamarck gives no locality for his specimen. 



37. Orthocera Acicula. Hist. Anim. s. Vert. vol. vii. p. 594, 

 No. 5. 



" O. testa recta, superne peracuta, subaciculari ; striis longi- 

 tudinalibus rectis. Habite : dans la Mediterranee ? Mon cabi- 

 net. Coquille tres-droite, et remarquable par sa forme aciculee. 

 Sa longueur est de 4 lig. trois quarts." 



This delicate, tapering, costated shell will be catalogued as 

 Nodosaria Raphanus, Linn., var. Acicula, Lam. 



" Orthocera " is not required as a generic or subgeneric name 

 for any of the Nodosaria. 



38. Nodosaria dentalina. Hist. Anim. s, Vert. vol. vii. p. 596, 

 No. 2. 



" N. testa elongato-subulata, leviter arcuata ; articulis tumi- 

 diusculis, glabris. Habite ? Mon cabinet. Cette coquille, un 

 peu arquee, et n'offrant qu'un leger renflement dans ses articu- 

 lations, rappelle en quelque sorte la forme d'une tres-petite Den- 

 tale. Ayant environs 2 lignes de longueur." 



This is evidently the same smooth, delicately acicular, and 

 gently bent variety of Nodosaria which was subsequently named 

 Dentalina communis by D'Orbigny. N. dentalina, however, is a 

 very apt and serviceable name. Besides this well-marked and 

 not uncommon form, there is a host of closely-allied varieties, 

 fossil in many clays and other deposits of Tertiary, Secondary, 

 and even Palaeozoic age, and living in the present seas*. N. 

 dentalina flourishes on muddy sea-bottoms at a depth of about 100 

 fathoms ; but it extends also in its range from shallow water to 

 700 or 800 fathoms or more. 



39. 40, 41. Nodosaria Raphanus, Linn., Vaginulina Legumen, 

 Linn., and Nodosaria Radicula, Linn., are figured in the Tableau 

 Encyc. et Meth. pi. 465. figs. 2-4, and catalogued in Hist. 

 Anim. s. Vert. vol. vii. pp. 593, 595, & 596; but the figures 

 are bad copies of older engravings (after Plancus), and nothing 

 new is added in the descriptions. 



* Ann. Nat. Hist. ser. 3. vol. iv. p. 345. 



