Cephalapoda. 'Y'V Aptychus. 



fragilis, M. & H. (Trigonellttes), Proc. Acad. 1816, 421. 

 Gollevilliensis, Sharpe (Trigonellites), Foss. Moll, of Chalk, 



56, 24, 5. 

 Icenicus, Sharpe (Trigonellites), ibid. 57, 24, 7. 

 insignis, Hebert (Trigonellites), M. G. S. F. 2d s. vol. iv, 



367, 28, 6. 

 leptophyllus, Sharpe (Trigonellites), Foss, Moll, of Chalk, 



55, 24, 1. 

 ohtusus, Heb. (Trigonellites), M. G. S. F. 2d s. vol. iv, 367, 28, 7. 

 peramplvH, Sharpe (Trigonellites), Foss. Moll, of Chalk, 58, 24, 10. 

 Portlocku, Sharpe (Trigonellites), ibid. 56, 24, 2-4. 

 rugosus, Sharpe (Trigonellites), ibid. 57, 24, 8. 



BACULINA, d'Orb. 1847. 

 Rouyana, d'Orb. Prod. 66. Fr. K. 



BACULITES, Lam. 1799. 



anceps. Lam. An. Sans. Vert. vol. vii, 648. E., F., G., Sweden, 



Chili, India, N, Jersey, Del., Ala., Miss., Tenn. C. 



annulatus. Con. Proc. Phil. Acad. vol. vii, 265. Texas. C. 



asper, Morton, Synopsis Cret. 48, 1, 12-13. Ala. C. 



asperoides. Meek & Hayden, 1860, Proc. Acad. 421. Neb. C, 



baculoides, Mant. Geol. Suss. 123, 23, 6, 7. E., F., G., Sw. C. 

 carinahis, Morton (anceps), Syn. 44, 13, 1. 

 columna, Morton (Hamites), Syn. 44, 19, 8. 

 compressus. Say, 1821, Am. Jour. Sci. vol. ii, p. 41. N. J., 



Del., Ala., Miss., Tenn., Nebraska. C. 



cylindracea, Defr. (Hamites), Diet. Sc. Nat. p. 160, t. 4. 

 dissimilis, Desm. (anceps). Jour, de Phys. p. 48, pi. 85, pi. 2, 



f. 4-6. 

 Faujasii, Haan, Mon. Am. et Goniat, p. 155. E., G., Sw., Fr. 31., C. 

 gigas, Rouss. Yoy. dans Russ. Mer. vol. ii, 784, 12, 3. Crimea. C. 

 gracilis, Shumard, Trans. St. Louis Acad. 1860, 596. Texas. C\ 

 grandis, H. & M. Mem. Am. Acad. Boston, vol. v, 402, pi. 6, 



7, and 8. Nebraska. C. 



incurvatus, Dujard, N. G. S. F. vol. ii, 232, 118, 1-3. Fr. C. 



labyrinthicus, Morton, Synopsis, 44, 13, 10. Ala. C. 



Lyelli, d'Orb. Voy. Astrolabe et Zelee, pi. 4, f. 3-7. Chili. C. 



magnum, Woodw. Geol. Norf. p. 49. E. C. 



