264 PATAGONIAN EXPEDITIONS : PAL/EONTOLOGY. 



This adds 13 species, giving the total number of the Patagonian fossils 

 known up to this date as ng. 



Comparing our list of species (see pp. 257, 258) with that of the species 

 reported previously from the Patagonian beds, we see that of the 119 

 species known, 95 are represented in our collection, while 56 are added, 

 our list containing altogether 151 species. The following is the list of 

 24 species, reported previously, which are more or less well established, 

 but not represented in our collection : 



1. Leda glabra (Sow.), 1846, and v. Ih., 12. Gibbula margaritoides Cossm., 1899. 



1897. 13. Eulima subventricosa v. Ih., 1897. 



2. Pinna semicostata var. magellanica v. Ih., 14. Odontostomia euryope Cossm., 1899. 



1899. 15. Fossarus pillula Cossm., 1899. 



3. Venus patagonica Phil., 1887, and v. Ih., 16. Trichotropis patagonica Cossm., 1899. 



1899. 17. Tritonium dautzenbergi v. Ih., 1897. 



4. Tellina perplana v. Ih., 1897. 18. Tritonium obliteratum Cossm., 1899. 



5. Tellina patagonica v. Ih., 1897. 19. Marginella quemadensis v. Ih., 1897. 



6. Tellina santacruzensis v. Ih., 1899. 20. Marginella confinis v. Ih., 1897. 



7. Solen elytron Phil., v. Ih., 1897. 21. Valuta patagonica v. Ih., 1897. 



8. Mactra indistinc to, v. Ih., 1897. 22. Cancellaria vidali Phil., 1887. 



9. Panopea nucleus (v. Ih.), 1899. 23. Cancellaria ameghinoi v. Ih., 1897. 



10. Pholas paucispina v. Ih., 1897. 24. Peratotoma iheringi Cossm., 1899. 



11. Gibbula iheringi Cossm., 1899. 



This would bring up the total number of well established Patagonian 

 species to 775, to which we have to add the following doubtful forms : 



1. Pecten nodosoplicatus v. Ih., 1897. Too incompletely known. 



2. Fimbria {t} patagonica Phil., 1887. Too incompletely known. 



3. Venus cf. uncinata Phil., v. Ih., 1899. Casts only known. 



4. Mactra (?) rugata Sow., 1846. Too incompletely known, and never found again. 



5. Plwtinula detecta Roch. & Mab., 1885. Description unsatisfactory. 



6. PJwtimda resurrecta Roch. & Mab., 1889. Description unsatisfactory. 



7. Natica omoia Roch. and Mab., 1885. Perhaps identical with one of the other Naticce. 



8. Turritella elachista Roch. & Mab., 1889. Description unsatisfactory. 



9. Pyrula cf. hombroniana Phil., v. Ih., 1899. Material very poor. 



10. Fusus cf. nodosus Mart, v. Ih., 1897. Cast only. 



11. Trophon leucostomoides Sow., v. Ih., 1897. Identification beyond control. 



12. Valuta alta Sow., 1846, and v. Ih., 1899. Identification probably incorrect. 



13. Terebra undulifera Roch. & Mab., 1899. Perhaps = T. costcllata. 



Other species, especially some of those given by d'Orbigny, Sowerby, 

 and in Philippi's list (1887, p. 251) do not belong to the Patagonian for- 



