312 



DESCRIPTION OF A COLLECTION OF FOSSILS, 



Ciet. ; Brazil. 



Cret.; Brazil. 

 Cret.; Colombia. 



Cret.; Venei. 

 Jurassic; Peru. 



Cret.; Venez. 

 Cret.; Col. 



Cret.; Colombia. 



Lias.; Peru. 



flatter cross section. Strange to say, although it lias been quoted half a dozen times, nobody 

 has had more than imperfect fragments, and the septum is, as yet, unknown. Perhaps the impres- 

 sion named by Dana A. Pickeringii (q. v.) should be placed here. 

 A. Halli, Meek & Hayden, Proc. Phila. Acad., 1856, p. 10. 

 Fhylloceras? id.^ Meek, Rep. Haydeu's Survey, p. 458, PI. 24, f. 3, a, &, c 



Id. Hyatt, Hartt's Brazil, p. 388. 



A. Hartti, Hyatt (sp.). 

 Ceratites id., Hyatt, Hartt's Brazil, p. 886. 

 A. HopKiNSii, Fbs., Q. J. G. S., v. 1, p. 116. 

 A. HuGARDiANUS, d'Orb., p. Fr., T. Cret., v. 1, p. 291, PI. 86, f. 1. 



Id. V. Buch, Zeits. D. Geol. GeselL, v. 2, p. 342. 



A. Hyatti, Gabb, new sp. 

 A. iNFLATTJS, Sby., M. Con., p. 178. 



Id. V. Bucli, Zeits. D. Geol. Gesellschaft, v. 2, p. 341. 



A. Leonhardinus, Karst., Geog. Verb., N. Gren., p. 106, PI. 2, f. 5. 

 A. LiGATUS, d'Orb., Pal. Fr., Terr. Cret., p. 126, PI. 38. 

 ^. Irtca, Fbs., Q. J. G. S., V. 1, p. 116. 

 A. LoscoMBi, Hyatt (sp ). 



Phylloceras id., H., Proc. Bost. N. H. Soc, v. 11, p. 368. 

 A. MACROCEPHALUS, Sclilot., Taschenb., p. 10. 

 Id. Hup., Gay's Chile, p. 36. 



A. corrugatus, Hup., on plate. 



Stephanoceras id., Hyatt, P. B. S. N. H , v. 11, p. 368. 

 A. macrocephaluH, Gabb, present paper. 

 A. Mayorianus, d'Orb., P. F., T. Cr., v. 1, p. 261, PL 19. 



Id. Y. Buch, Zeits. D. Geol. Gesell., v. 2, p. 342. 



A. MiSERABiLis, Quenst., Jura, p. 11. 

 Arnioceras id., Hyatt, P. B. S. N. H., v. 11, p. 361. 

 A. NoEGGERATHii, Karst., Geog. Verb., N. G., p. 104, PI. 1, f. 6. 

 A. MosQUERiE, Karst., Geog. Verb. N. G., p. Ill, PI. 4, f. 4. 

 A. OcoiDENTALis, Lea, Tr. A. P. S , 2 s., v. 1, p. 254, PI. 8, f. 4. 

 A. Vanuxememis, Lea, loc. cit., p. 254, PI. 8, f. 5. 

 A. Alexandriyms, d'Orb., A. Mer., p. 15, PL 11, f. 8-11. 

 A. Ollonensis, Gabb, new sp. 



A. ORBiGiNYi, Gabb, 1861, Proc. A. Phil. Soc, Syn. Cret., p. 14. 

 A. alternatus, d'Orb., A. Mer., p. 11, PL 1, f. 5-6. 

 Not id., Woodward, nor Portl. 

 A. Ortoni, Hyatt (sp.). 



Caloceras id., Hyatt, Pr. B. Soc. N. H., v. 11, p. 361. 

 A. PERARMATTJS, Sby., M. Con., PL 352. 



Id. Philippi, Atacama, p. 141. 



A. Peruvianus, V. Buch, Petr., p. 5, f. 5-1. 



OoL; Chile, Bolivia, Peru. 

 Cret.; Venez. 



Lias.; Bolivia. 

 Cret.; CoL 

 Cret.; CoL 



Cret.; "Col. 

 Cret.? Peru. 



Cret.; Colombia. 



Jur.? Peru. 



Jur.; Chile. 

 Cret.; Colombia. 



