• Ortmann — Invertebrate Fossils from Patagonia. 379 



Gastropoda. 



12. Vermetus of. intortus (Lmck.). (Moerch. Proc. Zool. 

 Soc. London, 1861.) Known from Oligocene to Pliocene 

 deposits in Europe. The identification is not beyond doubt. 



Shell Gap; Lake Pueyrredon. 



13. Galerus araucanus (Phil.), (1. c, p. 92). Navidad beds 

 of Chile. 



Shell Gap ; Lake Pueyrredon. 



11. Aporhais araucana (Phil.), (1. c, p. 35). Navidad beds 

 of Chile. 

 Santa Cruz. 



15. Buccinum obesum (Phil.), (1. c, p. 48). Navidad beds 

 of Chile. 



Santa Cruz. 



16. Cancellaria cf. medinae (Phil.), (1. c, p. 68). Navidad 

 beds of Chile. Identification not quite certain. 



Santa Cruz and Mt. of Observation. 



Crustacea. 



17. Verruca laevigatas Sow. (Darwin, Monogr. Balan., 

 1851, p. 520). Living on the coast of S. America. 



Upper Rio Chalia. 



Remarks on Synonymy, etc. 



1. Magellania lenticularis (Desk). What v. Ihering men- 

 tions as M. globosa I take for M. lenticularis. 



2. Ostrea ingens Zitt. The large Patagonian oyster is abso- 

 lutely identical with the New Zealandian species described by 

 Zittel as O. ingens, and differs from O. patagonica of 

 d'Orbigny. The latter is not found at all in the Patagonian 

 formation. There is only one species in the Patagonian beds. 



3. Pecten proximus v. Ihering. This species has been called 

 byv. Ihering in his text (Rev. .Mus. S. Paulo, 189T, p. 229) by 

 the name of P. centralis Sow., but is different ; I accept for it 

 the name given by v. Ihering on the plate. 



4. Pecten geminatus Sow. Synonyms of this species are : 

 P. quemadensis v. Ih. and P . fissicostalis v. Ih. 



5. Cucullwa alta Sow. I cannot distinguish v. Ihering's 

 0. dalli from this species. 



6. Cucullcea darwini (Phil.). There is not the slightest 

 doubt, that Cucullaria tridentata of v. Ihering is this species. 



7. Pectunculus ibari (Phil.). Synonyms of this species are: 

 P.magellanicus Phil, and P . jpulvinatus cuevensis v. Ih. 



8. JVucula patagonica (Phil.). N. tricesima v. Ih. is only a 

 variety of this species. 



