320 



DESCRIPTION OF A COLLECTION OF FOSSILS, 



Cret.; Col. 



Jurassic; Peru. 



Jurassic; Chile. 



Cret.; Chile. 

 Jur. ; Chile. 



Cret.; Chile. 



Trigonia abrxipta, V. Biich, Petr., p. It, f. 21-22. 



Id. d'Orb., Am. Mer., p. 86, PL 19, f. 4-6. 



T. Bronni, Agas. Etud., p. 18, PI. 5, f. 19. 

 Lyrodon clavellatum, Bronn, Leth., PI. 20, f. 3. 

 Not T. id., Sby., M. Con., PI. SI. 

 T. Bronni, Gabh, present paper. 

 T. CATENiFERA, Hup., Gay's Chile, p. 328, PI. 5, f. 8. 

 T. catena! a on plate. 

 T. Delafossei, Bayle & Coq , M. G. Soc. Fr., 2 s., v. 4, p. 31, PI. 8, f. 21. 



Id. Hup,Gay, p. 328. 



? T. DoMEYKANA, Phil., Atacama, p. 144, PI. 1, f. 5-6. 

 T. Hanetiana, d'Orl)., Am. Mer., p. 127, PL 12, f. 14-16. 

 Id. d'Orb., Ast. & Zel., PL 5, f. 23-24. 



Id. Hup., Gay, p. 327. 



T. obtusa, Hup., id., p. 327, PL 5, f. 9. 



T. GiBBONiANA, Lea, Tr. A. P. S., 2 s , v. 7, p. 255, PL 9, f. 7. 

 T. Hondaana, Lea, loc. cit., p. 256, PL 9, f. 9. 



Id. d'Orb., A. Mer., p. 85, PL 19, f. 1-3. 



T. BoussivgauUii, d'Orb., Foss. Col.', PL 4, f. 1-9. 

 T. Hondaana, d'Orb., loc. cit., p. 50. 



Not T. Qihhoniana, Gabb, PaL CaL, v. 1, p. 190, PL 17, f. 178; PL 31, f. 262. 

 Nor id. Gabb, loc. cit., vol. 2, p. 248. 



I have compared Mr. Lea's types of the two names and find they are undoubtedly the same 

 species, and on comparing them with the Californian form, they prove to be quite distinct. 

 T. HuMBOLDTii, Y. B., Petr., p. 9, f. 28-30. Cret. ; Col 



T. Lajoyi, Desh., Leym., M. G. S. Fr., v. 5, PL 8, f. 4. 



Id. d'Orb., A. Mer., p. 87, PL 19, f. 10-11. 

 T. longa, Agas., Etud. Trigon., No. 47, PL 8, f. 1. Cret. ; Col. 



T. LoRENTi, Dana, Wilkes' Exped., p. 721, PL 15, f. 2. 



Id. G., present paper. Jur.; Peru. 



T. sxJBCRENXTLATA, d'Orb., A. Mer., p. 87, PL 19, f. 7-9. Cret.; Col 



T. ToCAiMAANA, Lea, Trans. A. P. S., 2 s., v. 7, p. 256, PL 9, f. 8. 

 T. alseformis. Von Buch, Petr., p. 8, PL 1, f. 10. 

 Id. d'Orb., A. Mer., p. 88, PL 20, f. 1. 



Not id. Sby., M. Con., PL 3, f. 27. 



I had coincided with the two above-quoted authors in believing this shell to be the same as 

 the English form until, since I have been at work at the present paper, Mr. Lea kindly loaned me 

 his specimens, and I find, on a critical comparison with authentic English specimens, that there 

 are small, though constant specific differences. 

 Myophoria spiralis, Gabb, new sp. 

 PosiDONOMYA Becheri, var. Liasana, Bronn, Leth , p. 342, PL 18, f. 23. 



Id. Phil., Atacama, p. 144, PL 1, fig. 7. Li^^s. ; Chile 



Arca Araucana, d'Orb., A. Mer., p. 129, PL 13, f. 1-2. Cret 



Cret. ; Colombia. 



Lias.; Peru. 



Chile. 



