oio Appendix to Part IL 



Pecten Paeanexsis. — D'Orbig. ' Voyage, Part-. Pal.' (PL III. 

 fig. 30 of this work.) 



This species has been figured and fully described by M. d'Or- 

 bigny, and has been accidentally refigured here. 



San Josef, San Julian, Port Desire, Patagonia; and St. Fe, 

 Entre Eios. 



Pecten- centralis. — PL III. fig. 31. 



Pecten testa subcirculari, depressd, radiis quinque squamuliferis cen- 

 trali eminentiore,lineis radiantibus asperis numerosisque ornatd; 

 auriculis magnis, subcequalibus f 



A single fragment of this remarkable species was found at 

 Port S. Julian : two others were brought from Port Desire. These 

 fragments are all of the same side, so that we are as yet but very 

 imperfectly acquainted with the species. 



San Julian, Port Desire, Santa Cruz, Patagonia. 



Pecten actinodes. — PL III. fig. 33. 



Pecten testa suborbiculari, co?ive.viusculd,tenui, valvis subcequalibus, 

 radiis principalibus subelevatis circa 36, intermediis 3-7 

 minoribus, otnnibus squamuliferis; auriculis incsqualibus, 

 radiatim squamuliferis, altera maynd, porrectd, altera par vd, 

 declivi. 



Remarkable for its principal ribs being numerous and only 

 slightly elevated, and for its intermediate ribs being very nu- 

 merous. 



San Josef, Patagonia. 



Pecten eudis.— PL III. fig. 32. 



Pecten testa suborbiculari, subincequicalci, crassiusculd, rudi, costis 

 radiantibus 22, rotundatis, interstitiis angustioribus ; intermediis 

 nonnunquam fere obsoletis ; margine valide undulato. 



The specimen is only a fragment ; another fragment accompanies 

 it, which may possibly be the opposite valve. 



Coquimbo, Chiloe. 



