216 NOYACULIlfA. 



NEVEEITA. Eisso, 1826. Natica glaucina, and similar spfecies. 



NISSO. Eisso, 1826. The perforate species of Eulima ; Genus 

 BoNELLiA, Deshayes, 1836. 



NITIDELLA. Sw. A genus of " ColumbellinEe," Sw. thus 

 described : " BuQciniform, small, ovate, smooth, glassy ; aperture 

 effuse ; outer lip slightly thickened, faintly inflexed, and gene- 

 rally striated internally ; inner lip somewhat flattened above ; 

 base of the piUar with one or two slight internal folds, or a 

 single angular projection. Columbella nitida, Lam. (fig. 17, c. 

 151.)" Sw. p. 313. PI. xsvi. fig. 560. 



NOBIA. Leach, Order, Sessile Cirripedes, Lam. This genus 

 resembles Pyrgoma, Auct. consisting of a conical paries, sup- 

 ported upon a funnel-shaped cavity in the madrepore, but differs 

 in its operculum, which consists of two valves, whereas that of 

 Pyrgoma has foiu'. N. grandis, PI. i. fig. 29. 



NODOSAEIA. Lam. and Oethoceea have been united by 

 Sowerby under the name of the first. Fam. Orthocerata, Lam. 

 and Bl. — Bescr. Straight, chambered, elongated ; chambers more 

 or less ventricose ; septa perforated by a central siphon. — Obs. 

 This genus consists only of fossils found in sub-appeniue tertiary 

 beds. It is placed by De Blainville in one of his divisions of 

 the genus Orthoceras, which is characterized as " species not 

 striated, and with chambers very much iuflated." N. sequalis. 

 PI. xxii, fig. 465. 



NODOSE. Having tubercles or knobs. 



NOGrEOBS. Montf. A fossil appearing from the figure and de- 

 scription to resemble Belemnites. 



jS'OJ^ION, Montf. A genus of microscopic Eoraminifera. 



NONIONINA. D'Orb. A genus of microscopic Eoraminifera. 



NOTEEMA, Eafinesque. A shell described as composed of 

 three integral valves, concerning which De Blainville puts the 

 query, "ne seroit-cepas plutot une Balanide malobservee ?" 



NOVACULINA. Benson. {Novacula, a razor.) Fam. Solen- 

 acaea, Lam. — Bescr. Equivalve, inequilateral, transversely 

 elongated ; external ligament communicating with the interior 

 of the shell by an oblique chaimel ; beaks prominent ; hinge line 



