yrs ssnitt:.. 26. - FEL 
ihyreia,H. & AvAd. IL 
Iiyrias Gray. ..\. II 
. Lyriodon, Sowb. . LI 
Lyriopecten, Hall.. III 
Lyrodesma, Conr. . III 
Lyrodus, Gld. Il 
Lyropecten, Conr.. III 
Lyroscapha, Conr.. II 
Lyrostoma, Mch. Til 
Lyrostoma, Swn. UGC 
Lysianassa, Mun. Ill 
Lysinoe, H, & A. ay II 
Lysis, Gabb. II 
ce oe m . UGE 
Lytoceras, Suess. II 
Macalia, A. Ad.. Ii! 
Macandrellus,Carp. II 
Macandrevia, King. III 
Macandrewia,Schloen. IIT 
Macedonica, Bott. . III 
Macgillivraya, Frbs. II 
Macgillivrayide. didi 
Macha, Oken. Ill 
Machera, Gld. III 
Macheroplax, Friele. II 
Machomya, Loriol. III 
Maclurea, Les. II 
ce 73 II 
Macluride. ET 
Macoma, Leach. . III 
Maerceallista, Meek. III 
Macroceramus, Guild. III 
Macrocheilus, Phil. —_ II 
66 ec Il 
Macrochilina, Bayle. II 
Macrochlamys, Bens. III 
Macrocyclis, Beck. III 
Macrocycloides, Mart.III 
Macrodon, Lyeett. III 
Macrodonta, Desh. III 
Macrodontes, Swn. III 
Macrogastra, Strebel. III 
Macron,H.& A.Ad. II 
Macrophragma, Carp. II 
* 
INDEX. 
PAGE 
29 
2595 
167 
245 
291 
258 
Macrophysa, Meek. IIT 
Macroptychia, Bott. III 
Macroscaphites, Meek. IT 
Macroschisma, Swn. IT 
Macrospira, Swn. Iil 
Mactra, Linn. Iil 
Mactrella, Gray. Iil 
Mactride. . EDI 
Mactrine. . EEE 
Mactrinula, Gray. Il 
Mactrodesma, Conr. III 
Maciromeris, ‘Cone: III 
Mactromya, Agas.. III 
a ef Ill 
ce ce IIL 
be cc III 
6c 66 JOULE 
Mactropsis, Conr. . III 
Macularia, Albers.. III 
Madrella, ‘A, & iH. II 
Meeonia, Dana. Tie 
Magas, Sowb. III 
Magasella, Dall. Iil 
Magdala, Leach. . III 
Magellania, Bayle.. III 
Magilina, Vel. . ih 
Magillus, Montf. A 
Malea, Val. 1a 
Malicolimax. . Iil 
Malinastrum. Iil 
Malino, Gray. Iit 
Malletia, Desm. . Lit 
Malleus, Lam. . 1 
Mamilla, Schum. Li 
Mamillana, Crosse. DE 
Mamma, Klein.. . II 
Mancinella, Link. . II 
Mancinella, Mus. Berl. II 
Mangelia, Leach. Ha 
M: ingelia, Rye ii 
Mangiliella, Ib. D. &D: eh 
Mannia, Daw. . . III 
Ms: intellum, Bolten. III 
Manzonia, Brus. II 
Maravignia, Aradas. II 
Marcia, H.& A. Ad. III 
