obtusa 

 obtusa 

 obtusus 

 obtusus 

 obtusa 

 obtusa 

 obtusa 

 obtusus 

 obtusa. 



obtusus 

 obtusa 

 obtusa 

 obtusa. 

 obtusus 

 o btusus 

 obtusa 

 obtusus 

 obtusa 

 obtusa 

 o btusa 

 o btusus 

 obtusa 

 obtusus 

 obtusa 

 obtusa 

 obtusa 

 o btusa 

 obtusa 

 obtusa 

 obtusa 

 obtusus 

 obtusa 



obtusa 

 obtusum 

 obtusus 

 obtusum 

 obtusa 

 obtusa 

 obtusa 

 obtusa 

 obtusa 

 obtusa 

 o btusus 

 obtusa 

 obtusus 

 obtusa 



obtusa 

 obtusa 

 obtusa 



obtusa 

 obtusa 

 obtusus 

 obtusa 



obtusus 



45 0 7 



Lingula, J. Hall, X. H. Xew York (Pal. I.) 1847, 98. 

 Liogaster, H. '-. 
[eyer, X. Jahrb. f. 
Iin. r844, 567. [Aug. 1829, 33 2 . 

 Lipeurus, J. F. Stephens, Xom. Brit. Ins., Aug. 1829, 64; & Syst. Cat. Brit. Ins., 

 Lithodomus, A. d'Orbigny, Pal. Franç., Crét. III (Lam.) 1845, 296. 

 Litogaster, H. v. :\Ieyer, Palaeontographica, I (3) July 1847, 137.-Liogaster, 

 Lucina (Axinus), E. Beyrich, Arch. f. min. XXII. 1848, 58. [ 18 44. 

 :\[arginella, G. B. Sowerby, II., Thes. Conch. I (7) ante 27 Xov. 1846, 374. 

 l\larmorosaurus, R. Owen, Odont., Expl. pIs. (r845), 20. 

 l\lartinia (Sow.), F. :\['Coy in Griffith, Syn. Carbo Lst. foss. Ireland, 1844, 1..$.0.- 

 Spirifero 

 
[astus (Drap.), H. Beck, Index :\[oll. 
Ius. Ch. Fred. (r) 1837, 73.- Pu pa. 

 Melania, I. Lea, P. Amer. Phil. Soc. II (16) Feb. 1841, 13. 

 l\IeIanopsis, G. P. Deshayes, Descr. Coq. foss. Paris, II. 1825, r23. 

 l\fembracis, J. C. Fabricius, Syst. Rhyng. r803, II. 

 l\Iicropeplus, E. Newman, Entom. :\Iag. II (2) Ap. 1834, 201. 

 Millericrinus, A. d'Orbignv, H. X. Crinoides (3) 
Iay 1841, 75. 

 l\Iodiola, J. Hall, X. H. Xev\"' York (Pal. I.) 1847, 40. 

 )Ionoceros (Desh.), H. G. Bronn, Index Pal. 1848, 741.-Buccinum. 

 Morica, Latr.; Dejean, CataI. Coléopt., ed. 2 (3) 1834, 182 [no n.]. 

 :\Iorica, A. J. J. Solier, Ann. Soc. Ent. France, V (4) post Jan. 1837, 650. 

 l\Iormidea, C. J. B. Amyot, Ann. Soc. Ent. France, III (4) r846, 449. 

 l\Iyacites, G. A. Goldfuss, Petref. German. II (7) 1840, 261. 

 Xatica (Sow.). A. d'Orbigny, Prodr. Paléont. II [Xov.] 1850, 3II.-Globulus. 

 Xaupactus, Hellw.; J. Sturm, Catal. Ins. SammI. 1826, 172. 

 Keritina, \V. H. Benson, J. Asiat. Soc. Bengal, V. 1836, 749 [no n.]. 

 Xucula, J. De C. Sowerby, Tr. Geol. Soc. London [2] IV. 1836, 342. 

 Xummularia, J. De C. Sowerby, Tr. Geol. Soc. London [2] V. r840, expI. pI. xxiv. 

 Xummulites, J oly & Leymerie, )[ém. Ac. R. Sci. Toulouse [3] IV. 1848, 187 & 217. 

 Ophisurus, W. S\\'ainson, X. H. Fishes etc. II. July 18 39, 395. 

 Ophiura, E. Eichwald, Siluro Schichtensyst. Esthland, 18 4 0 , 193. 

 Opsonais, P. Gervais, Bull. Ac. Roy. Brux. V. 1838, 17 [n. n.]. 

 Oreaster, E. Forbes, :\lem. Geol. Surv. Gt Britain, II (2) 1848, 468. 

 Orthis (Pand.), E. de Yerneuil in :\[urchison, V. & K., Geol. Russia, II. Aug. 1845, 

 212.-Productus. 

 Orthocera, T. Brown, Trans. :\Ianchester GeoI. Soc. r841, 219. 

 Otarion, F. l\I'Coy in Griffith, Syn. Silurian foss. Ireland, 18 46, 54. 

 Otiorhynchus, Boheman in C. J. Schoenherr, Gen. et Sp. Curc. VII (I) 18 43, 356. 

 Ovulum, G. B. Sowerby, I., Zool. Journ. n- (14) Oct. 1828, 156. 

 Oxyuris, Hemprich & Ehrenberg, Sym. Phys. (:\Iamm.) Hyrax, 1828, sign. f. 

 Paludina, F. H. Troschel, Arch. f. Xaturg. III (I) 18 37, 173. 

 Paludina, I. Lea, P. Amer. Phil. Soc. II (17) .\p. 18 4 1 , 34. 

 Pandora, Lamarck, An. S. "ert. V. 1818, 499. 

 Pandora, G. B. Sowerby, I., in Broderip & S., Spec. Conch. I (I) 1830, 2. 

 Panopaea (Goldf.), A. d'Orbigny, Prodr. Paléont. I. 1849 [Jan. r850], 173.- 

 Pasimachus, J. Sturm, Catal. Ins. SammI. 1826, 182 [no n.]. [
Ivacites. 

 Patiria, J. E. Gray, Proc. Zool. Soc. London, XV (174) June 3 0 , r847, 82. 

 Pentamerus, C. H. Pander, Beitr. Geogn. Russ. Reichs, 18 3 0 , 94. 

 Periploma, S. Hanley, Ill. enlarged & Engl. ed. of Lamarck's Species of Shells 

 (I) 1843, List of Ill. to pI. ii. 

 Phil a, V. V. :\[ochulski (? ex Dej. 
IS), Kaefer RussI., post 
Iay 18 5 0 , 14. 

 Pholadomya (J. Sow.), J. De C. Sowerbv, :\Iin. Conch. VI. 1827, 86.-Cardita. 

 Phycis, A. H. Haworth, Lepidopt. Brit. (3) 1811, 495.-Tinea obtusella, Huebn. 

 179 6 . 

 Phycita (Haw.), J. Curtis, Brit. Entom. V (58) Oct. 1828, no. 233.-Phycis. 

 Pimelia, \V. Turton, Linnaeus, Syst. 
at. II. 1802, 491. 

 Planorbis, J. Sowerb,', :\Iin. Conch. II. 1816, 91. 

 [Pleuraster] (Goldf.), L. _\.gassiz, l\Iém. Soc. Sci. 
at. Xeuchâtel, I. 18 35 (1836), 

 191.-Asterias. 



