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 
coneava. Lamarck gives no locality for his specimen. 
37. Orthocera Acicula. Hist. Anim. s. Vert. vol. vil. p. 594, 
No. 5. 
« Q. testa recta, superne peracuta, subaciculari; striis longi- 
tudinalibus rectis. Habite: dans la Méditerranée? Mon cabi- 
net. Coquille trés-droite, et remarquable par sa forme aciculée. 
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 Nodosarie. 
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 
u arquée, et n’offrant qu’un léger renflement dans ses articu- 
ions, rappelle en quelque sorte la forme d’une trés-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. WN. 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 Palzozoic age, and living in the present seas*. WN. 
dentalina flourishes on muddy sea-bottoms at a depth of about 100 
fathoms; but it extends also m its range from shallow water to 
700 or 800 fathoms or more. 
39, 40, 41. Nodosaria Raphanus, Linn., Vaginulina Legumen, 
Limn., and Nodosaria Radicula, Linn., are figured in the Tableau 
Encyc. et Méth. pl. 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. 
