26;: 



15. M. denticulata, Comad, Jouni. Ac. Nat. Sci. riiil. vi, 



22."), pi. 9, f. 21, 1830. 

 Conrad, Foss. Mod. Tort. Form. U. S. p. Sfi {not pi. 49, f. 

 10),* 1838. 

 Porcellana {Glabella) denticulata, Conrad, Cat. in Proc. Ac, 

 Nat. Sci. 18G2, p. r)()4, 18G2. Miocene : Maryland. 



16. M. dentifera, Lam., Ann. du Mus. ii, 01, 1803. 

 Roissy, BufFon, Moll, vi, 10, 1805. Lam., Anim. sans Vert. 



1st ed. vii, 359, 1822. Defrance, Diet, des Sci. .Nat. 

 xxix, 145, 1823. Desh., Coq. Foss. de Paris, ii, 707, 

 pi. 95, f. 27-29, 1824. Desh., Encycl. Moth. Vers, ii, 

 413, 1830. Desli. ed. Lam. Anim. sans Vert, x, 442, 

 1844. Middle Eocene ; Paris Basin. 



17. M. Deshaysii, Michelotti, Foss. Mioc. de I'ltalie Sept. p. 



321, pi. 17, f. 16, 1847. 

 31. glabella (not Linn.), Sismonda, Syn. Metli. p. 46, 1847. 

 M. Besliaysii, Desh., Traite Elementaire, pi. 123, f. 10. ? 1850. 



Miocene ; Piedmont. 

 M. DISTANS, Conrad, in Cat. Proc. A. N. S. 1862, p. 563, 

 is undescribed and unidentified. 



18. M. eburnea, Lam., Ann. du Mus. ii, 61, 1803. 



Lam., Ann. du Mus. vi, pi. 44, f. 9, 1805. Roissy, Bufion 

 Moll, vi, 9, 1805. Lam. Anim. sans Vert. 1st ed. vii, 

 359, 1822. Defrance, Diet, des Sci. Nat. xxix, 145, 

 1823. Brongn., Foss. Terr. Tert. Vicentin, pi. 44, f. 9, 

 1823. Desh., Coq. Foss. do Paris, ii, 707, pi. 95, f. 14 

 —16, and 20—22, 1824. 



M. hordeola, Desh., Coq. Foss. de Paris, ii, 708, pi. 95, f. 26 

 —29, 1824. 



M. eburnea, Desh., Encyel. Meth. Vers, ii, 413, 1830. Desh. 

 ed. Lam. sans Vert, x, 441, 1844. 



M. hordeola, Desh. ed. Lam. sans Vert, x, 455, 1844. 



M. eburnea, Edwards, Eocene Moll. Gr. Brit. p. 137, pi. 18, 

 f. 1 a, b, c, 1852. Eocene; England and Prance. 



M. EBURNEA, Grat., is M. subeburnea, Orb. 



M. EBURNEA, Beyrich, is M. intumescens, Koenen. 



19. M. eburneola, Conrad, Journ. Ac. Nat. Sci. Phil, vii, 



141, 1«34. 

 Conrad, Foss. Med. Tert. U. S. p. 86 {not pi. 49, f. ll),t 

 1838. 



* The reference to this figure in Conrad's text is evidently wrong, 

 t Wrong reference in Conrad's text. 



36 



