On the Nomenclature of the Foraminifera. 161 



to examine. It is very inferior in size to the C. nutans of Sars, 

 and the number of tentacles is somewhat smaller; but in all 

 other points it agrees with that species. 

 [To be continued.] 



EXPLANATION OF PLATE VI. 



Figs. 1-4. Halecium tenellum, natural size and magnified. 

 Figs. 5, 6. Coryne fruticosa, magnified. 



Figs. 7, 8. Sertulariafusiformis, natural size and magnified : 7 «, gonothcea 

 magnified. 



XVII. — On the Nomenclature of the Foraminifera. 



By*W. K. Parker, M. Micr. Soc, and T. R. Jones, F.G.S. 

 [Continued from vol. vi. p. 347.] 

 Part. VI. Alveolina. 

 The nomenclature of this genus serves to illustrate the confusion 

 of terms in which these and others of the Foraminifera have been 

 entangled. Deshayes and D'Orbigny have each given an account, 

 but the following history is fuller and more complete. 



Fortis* and Delucf wrote of fossil Alveolina about the same 

 time (1801 and 1802). The former figured and described three 

 varieties (from Gerona, Roussillon, and Grignon), and treated of 

 them as members of his comprehensive group Discolithus (Disc. 

 xi, xi a, Scxib). Deluc described and figured one from Bengal X 

 and one from Grignon §, and remarked that they must be varie- 

 ties of one species, which he referred to as "le petit fossile ovoide 

 a cotes de melon." 



In 1802, a short paper appeared in the 'Bullet, des Sciences 

 Soc. Philom.' no. 61. p. 99, signed C. V., noticing two minute 

 shells which Bosc had found in calcareous sandstone near the 

 village of Auvert (or Anvers), near Pontoise, in the valley of the 

 Oise, and which he referred to Lamarck's Alveolites (a genus of 

 Corals, instituted in 1801). These are named || respectively 

 " Alveolitc grain de fetuque" % and " Al. grain de millet." The 



* Journ. de Phys. vol. lii. p. 106 &c. pi. 2. figs. 7,8, 9, 1801; and Me- 

 moire snr les Discolithes, 1802, in the Mem. Hist. Nat. Italie, vol. ii. p. 112 

 &c. pi. 3. figs. 6-11, pi. 4. fig.4. In 1770, Guettard figured what appears 

 to be a spheroidal Alveolina (Memoires sur diff. part, des Sciences et Arts, 

 vol. iii. p. 430, pi. 12. fig. 15), under the name of "Madrepore globulaire 

 feuille." 



f Journ. de Physique, 1802, vol. liv. p. 176 &c. pi. 1. figs. 11-14. 



X Alveolina ovoidea, D'Orb. § Alveolina Boscii, Defr. 



|| See also Bosc's Hist. Nat. Coq. 1802 (Buffbn de Deterville), and his 

 article "Alve'olite" in the ' Nouveau Diet. Hist. Nat.' 1816. 



^T The figure given of this was subsequently referred to by Brongniart 

 (1822), in Cuvier's ' Ossemens Fossiles,' ii. p. 270, as Alveolites Milium, 

 Bose. It ought to be A. Fesfuca, the other being A. Milium. 



Ann. cV Mag. N. Hist. Scr. 3. Vol. viii. 11 



