162 Messrs. W. K. Parker and T. R. Jones on the 



figures accompanying the note show that the former (pi. 5. fig. 3) 

 is a fusiform Alveolina, the latter (fig. 4, very bad) being possi- 

 bly a shorter and thicker ovoidal Alveolina (although Defrance 

 refers to it subsequently as being his Fahdaria discolithes). 

 These are noticed by G. L. Duvernoy in the 'Diet. Sc. Nat/ 1816, 

 vol. i. p. 557, in the article "Alveolite," where the Alveolites of 

 Bosc are still confounded with Lamarck's genus of Corals of the 

 same name. In the Supplement to the same volume (article 

 "Alveolites/' p. 136), Defrance observes that "l'espece a grain 

 de fetuque " is Fortis's Discolithus* xi b, and that Fortis's Disc. 

 xi a, from Vendemiers in Iloussillon, is a larger form. Defrance 

 here states that both the foregoing and the " Alveolite grain de 

 millet " occur abundantly near Paris, in the " calcaire coquillier 

 grassier," at Grignon, Montrouge, Meudon, Valognes, and 

 Courtagnon, and at Chaumont also; but here the "Al. grain de 

 fe'tuque " is the biggest, the other being very small. He adds, 

 provisionally, another species [Alveolites Larva), from Valognes, 

 smooth, pointed at the ends, and sometimes 18 millimetres 

 (8 lines) in length. In 1820 (Diet. Sc. Nat. vol. xvi. pp. 103, 

 104), Defrance separated the so-called "Alveolites" of Bosc 

 from Lamarck's genus of Corals, and named one of them (grain 

 de fetuque) " Oryzaire-Bosc " (Oryzaria Boscii), and the other 

 (grain de millet) " Fabulaire-discolithe" (Fabularia discolithes-f). 

 The type of the latter J he had from Grignon, and a variety from 

 Valognes; and from Chaumont he had another, which he named 

 " Fabulaire spheroide." 



In 1803, Fichtel and Moll § figured and described two fossil 

 forms (from Austria and Hungary), which they termed Nautilus 

 Melo, a. and (5. 



In 1808, De Montfort || published new generic and specific 

 names (Borelis melonoides and Clausulus Indicator) for the two 

 varieties figured by Fichtel and Moll, and a binomial appellation 

 (Miliolites sabulosus) for the fossil fusiform variety common at 

 Grignon. 



* Fortis's terra "Discolithus " has been generally overlooked by natural- 

 ists, and the French form of the plural, " Discolithes," misused for it. 



t This is the Discolithus ix. of Fortis (op. cit. p. 109, pi. 2. fig. Zj ; 

 and, as it was named Nummulites ovata by De Roissy in 1804 (Hist. Nat. 

 Mollusques, Suite de Ruffon, vol. v. p. 5!)), it had already a specific 

 name. 



X From the published figures given by De Rlainville and D'Orbigny, we 

 know the species that Defrance here refers to. Rose's " Alveolite grain de 

 millet" (Rullet. Soc. Philom. no. 61. pi. 5. fig. 4) is most probably an 

 ovoidal Alveolina. 



§ Test. Microscop. &c. ; see Annals of Natural History, 3rd ser. v. 

 p. 182. 



|| Conchyliolog. Systemat. ; see Ann. Nat. Hist. 3rd ser. vi. p. 342. 



