MADE BY DR. ANTONIO RAIMONDI IN PERU. 315 



Natica id., Leym., Mem. Geol. Soc. Fr., v. 5, p. 13, PI. 16, f. 8. 



Id. d'Orb., Pal. Fr., T. Cret., v. 2, p. 339, PI. 172, f. 1. 



Id. d'Orb., Am. Mer., p. 78, PI. 18, f. 1. 



Id. Von Buch, Zeits. Deutsch. G. GeselL, v. 2, p. 343. 



Id. H3-att, Hartt's Brazil, p. 385. Cret.; Venez., Col., & Brazil. 



Gyrodes Auca, d'Orb. (sp.). 

 Natica id., d'Orli., Ast. & Zel., PI. 4, f. 22-23. 



iV. C/iz7z?!a, d'Orb., Zoc. aY., f. 24-26. , Cret. ; Chile. 



I place both these names of d'Orbigny's as synonyms because, althoiigli the two sets of 

 figures seem to differ, I do not find the differences sustained by specimens from Chile in the 

 Academy's museum. The cross sections of the body whorl, the only character on which the 

 author relied, seem to vary even more than his figures, and to gradate from one form to the other. 

 G. CONTRACTA, Gabb, new sp. Lias.; Peru. 



G. LiRATA, Gabl), new sp. Cret.; Peru. 



RuMA Grangeanus, d'Orb. (sp.). 



Natica id., d'Orb., Ast. & Zel., PI. 4, f 18-19. Cret.; Chile. 



?Neverita phasianella, Bayle & Coquand (sp.). 

 Natica id., B. & C, M. G. S. Fr., 2 s., v. 4, p. 23, PI. 2, f. 9. 



Id. Huppd, Gay's Chile, p. 224. Cret.; Chile. 



Neverita striolata, Sby., Darwin's S. A., p. 255, PI. 5, f. 39. Cret.; Chile. 



Natica Orbignyi, Huppe, Gay, p. 224. Cret.; Chile. 



Scala (Opalia) auca, d'Orb. 



Scalaria auca, d'Orb., Ast. & Zel., PI. 4, f. 16-17. ' Cret.; Chile. 



?S. Chilensis, d'Orb., Am. Mer., p. 114, PI. 14, f. 1-2. 



Id. Hup., Gay's Chile, p. 152. Cret.; Chile. 



Possibly not a Scala, but figure and description are alike too poor to warrant an opinion. 

 S. (Clathrus) Pattoni, Gabb. 



S. (C.) Chilensis, Gabb, P. Phil. Acad. 1860, p. 197, PI. 3, f. 4. 

 Not S. Chilensis, d'Orb. 



Scala Pattoni, Gabl), Proc. A. P. Soc. Phila., vol. 8, p. 135. 



S. Gahhi, Remond, Pal. Chile, p. 31. Cret.; Chile. 



In ease d'Orbigny's species should prove to belong to another genus, then tlie old name for 

 this must be restored. 

 Tylostoma variabilis, Gabb, Pal. Cal., v. 2, p. 261, PI. 35, f. 6. 



Id. Gabb, present paper. Cret.; Peru. 



CiNULiA Chilensis, d'Orb. (sp.). 



^t'fiZ/ana iJ., d'Orb., Ast. & Zel., PI. 4, f. 32-34. Cret.; Chile. 



C. ANTiQUA, Gabb, new sp. 



AcTiEONELLA oviFORMis, Gabb, new sp. Cret;; Peru. 



LoxONEMA PoTOSENSis, d'Orb., Prod. Pal., v. 1, p. 172. 

 Chemnitzia Fotosensis, d'Orb., A. Mer., p. 60, PI. 6, f. 1-3. 



Melania, on plate. Trias.; Bolivia. 



PuGNELLUS UNCATUS, Forbes (sp.), Gabb, Syn. Cret., p. 72. 



