Nomenclature of the Foraminifera. 433 



some gently striated, that have the septal lines coated with exo- 

 genous shell-matter to a great extent, or, in other words, are 

 intensely limbate. One specimen in particular, a smooth form 

 intermediate to D. communis, D^Orb., and Vaginulina Legumen, 

 has the clear exogenous septal bands of nearly equal width with 

 the intervening portions of the chamber- walls. Soldani has 

 figured such a limbate Dentaline Nodosaria (named A^. interrupta 

 by D'Orbigny, Ann. Sc. N. vii. p. 252, no. 11) in his 'Testaceogr/ 

 vol. i. pt. 2. pi. 102. vas 236. fig. B, and described it, at page 96, 

 as fossil near Sienna. 



At Rimini there are also other Nodosarians that are nearly as 

 strongly limbate as the above-mentioned, and which might be 

 classed, some with Nodosaria Raphanus, Linn, sp., others with 

 DentalinaAcicula, Lam. sp., and others withZ). communis, WOrh.; 

 but it is to be noticed that, whenever a specimen of either of 

 these three groups (to the first or second of which Nodosaria 

 Fascia, Linn, sp., probably belongs) becomes strongly limbate, 

 it is sure to be passing into Vaginulina Legumen. 



17. Nodosaria (Orthocerina) Clavulus, Lamarck, sp. Page 255, 

 no. 48. Modele no. 2. This is Valvulina triangularis, D'Orb., 

 var. Clavulus; the same as Spirolina cijlindracea, var. yS [recta], 

 Lamarck, and Nodosaria Clavidus, Lam. Ann. N. H. ser. 3. v. 

 p. 287 & p. 468. 



Though the one species here mentioned does not belong to it, 

 yet Orthocerina is kept as a genus, to which Orthocerina quadri- 

 latera, D'Orb. (For. Cuba, pi. 1. f. 11, 12), O. Murchisoni, Reuss, 

 sp. (Denkschr. Akad. Wien, vii. pi. 25. f. 1, 2), O. anomala, 

 Reuss, sp. (Sitzungs. Akad. Wien, xl. pi. vii. f. 5), 0. Rmneri, 

 Reuss, sp, [ibid. f. 6), and O. globulifera, Reuss, sp. [ibid. f. 7), 

 belong. We regard the second of these as the type. See Car- 

 penter's 'Introd. Foram.' p. 166. 



18. Nodosaria Radicula, Linn, sp. Page 252, no. 3. Modele 

 no. 1. A simple form of Nodosaria. Ann. N. H. ser. 3. iii. 

 p. 479. 



19. Nodosaria spinulosa, Montagu, sp. Page 253, no. 15. A 

 delicate, spiny, Dentaline variety of N. Raphanus, Linn. sp. 

 From the London Clay. Ann. N. H. ser. 3. iv. p. 346. 



20. Nonionina asterizans, F. & M. sp. Page 294, no. 22. A 

 Nautiloid Nonionina with a radiating growth of exogenous shell- 

 matter around the umbilicus. As it stands between the smooth 

 forms and those with much astral limbation, we take it as the 

 type of the Nonionine subgroup of the Polystomella genus. 

 Ann. N. H. ser. 3. v. pp. 101, 103. 



21. Nonionina Auricula, F. & M. sp. Page 295, no. 24. This 

 is Pulvinulina repanda, F. & M. sp., var. Auricula. Ann. N. H. 

 ser. 3. v. p. 176. 



