126 * MoUnsca. 



Marcia H et A. Adams. Gen. II. 423. 1858. (Chioiu.) , . . . BIVALVIA. 

 Margarita, Forbes et Hauly iii Hist. of Brit. Moll. 1850. . GASTEROPODA. 

 Margaron'Lea inSyn. of Naj.Ed.IIL 1852. = Margarila, Lea. BIVALVIA. 

 Mariaella,'Gray iu Cat. Pulmou. Brit. Mus. 62. 1855. . . GASTEROPODA. 

 Marmorana, Hartmann iu Gast. der Schweiz. 210.1844. = 3Macularla, 



Alb GASTEROPODA. 



Marpessa Gray in Med. Repos. XV. 1821. (Clausilia.) GASTEROPODA. 

 Marsenina, (Gray) Bergh. in Act. Soc. Dau. III. 5. 1853. GASTEROPODA. 

 Massyla H. et A. Adams. Gen. L 278. 1858. (Cancellaria.) GASTEROPODA. 

 Mastonia, Hiuds in Auu. Mag. N. H. 1843. (Triphoris.) . GASTEROPODA. 

 MastTlla, Lowe in Proc. Zool. Soc. 213. 1854. (Pupa.) . . GASTEROPODA. 

 Matheria Billings iu Canada Geol. Sury. Dc. L 39. 1859. BIVALVIA. Foss. 



Mathilda, Semper in Joum. Conch. XIII. 1865 GASTEROPODA. 



Maugena Gray in Guide Moll. Brit.M. 183.1857. = Chaetoplenra, Shttlw. 



GASTEROPODA. 

 Manritia, Troschel in Gebiss d. Schuecken. 5. 201. 1863. GASTEROPODA. 

 Mazza, Klein iu Tent. meth. ostr. 1753. = Turbinella. . GASTEROPODA. 

 Mazzalina, Courad in Philad. Ac N. Sc Journ. IV. 295. 1860. 



GASTEROPODA. Foss. 

 Mecynodon, Keferstein in Deutsch. Geol. Zeitschr. 1857. BIVALVIA. Foss. 

 Medora, H. et A. Adams. Gen. 11. 183. 1858. (Clausilia.) , GASTEROPODA. 

 Medyla, Albers iu Heliceen. 2. Ausg. 47. 1860. (Nanina.) GASTEROPODA. 

 Meekelia, White et H. Johu in Mon. Jowa City. 1867, BRACHIOPODA. Foss. 

 Meekia, Gabb in Geol. Surr. of Calif. Palaeont. I. 1864. . BIVALVIA. Foss. 

 Megalomus, J. Hall in Geol. of New-York. II. 343. 1854. BIVALVIA. Foss. 

 Megambonia, J. Hall In Contr. Pal. New-York. 1859. . BIVALVIA. Foss. 

 Megapelta, Morch in Journ. Cuch. VL 282. 1857.(Limax.) GASTEROPODA. 

 Megara, H. et A. Adams. Gen. I. 306. 1858. (Vibex.) = Strephobasis, Lea. 



GASTEROPODA. 



Megasiphonia, D' Orbigny . . . mi. = Aturia ? Foss. 



Megasystropha, Lea in Pliilad. Ac N. Sc Proc 5. 1864. = Carini/er, 



Binney GASTEROPODA. 



Megathyris, D' Orbiguy in r Inst. XXV. 193. 1847. . . . BRACHIOPODA. 

 Megerlea, Kiug. 1850. DaTidsou iu Aun. Mag. N. H. 1852. BRACHIOPODA. 

 Megistostoma, Whitney in Geol. Surr. of Cal. 1 865. GASTEROPODA. Foss. 

 Meiocardia, H. et A. Adams. Gen. IL 461. 1858. (Bucardia.) . BIVALVIA. 

 Meioceras, Carpenter iu Proc, Zool. Soc 438. 1858- . . . GASTEROPODA. 

 Melanatria, Bowdich in Elem. of Conch. 1822. = Pirena, Lam. 



GASTEROPODA. 

 Melaniella, Pfeiffer in Mon. Hel. IV. 465. 1859. (Bulimus.) G ASTEROPODA. 



Melantho, BowdichiuElem. of Couch, 27. 1822 GASTEROPODA. 



Melapium, H. et A. Adams. Geu. L 1858 GASTEROPODA. 



Melasma, H. et A. Adams. Gen. I. 1858. (Melania.) . . . GASTEROPODA. 

 Melia, Albers in Heliceeu. 195. 1850. (Achatina.) = Varicella, Pf. 



GASTEROPODA. 



Melibe, Rang. = Melibaea GASTEROPODA. 



Menestho, (Miiller) Conrad in Philad. Ac, N. Sc. Journ. IV. 254, 1 860. = 



Pasithea, Lea GASTEROPODA. Foss. 



Menetus, H. et A. Adams, Gen, IL 262. 1858.(Plauorbis.) GASTEROPODA, 

 Menippe, Jeffreys in Brit. Conch, IV, 107. 1867. = Pherusa, Jeffr. 



GASTEROPODA, 

 Mentissa, H. et A. Adams. Gen. II. 185. 1858. (Clausilia.) GASTEROPODA, 

 Merdigera, Held iu Isis, 917. 1837. = Ena, Leach. . . . GASTEROPODA. 

 Merdigerus, Albers. = Merdigera. 



