264 
PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
This adds 13 species, giving the total number of the Patagonian fossils 
known up to this date as ug. 
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 15 1 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., 
1897. 
2. Pinna semicostata var. magellanica v. Ih., 
1899. 
3. Venus patagonica Phil., 1887, and v. Ih., 
1899. 
4. Tellina pcrplana v. Ih., 1897. 
5. Tellina patagonica v. Ih., 1897. 
6. Tellina santacruzensis v. Ih., 1899. 
7. Solen elytron Phil., v. Ih., 1897. 
8. Mactra indistinct a v. Ih., 1897. 
9. Panopea nucleus (v. Ih.), 1899. 
10. Pholas paucispina v. Ih., 1897. 
1 1. Gibbida iheringi Cossm., 1899. 
12. Gibbida margaritoides Cossm., 1899. 
13. Eulima subventricosa v. Ih., 1897. 
14. Odontostomia euryope Cossm., 1899. 
15. Fossarus pillida Cossm., 1899. 
16. Trichotropis patagonica Cossm., 1899. 
17. Tritonium dautzenbergi v. Ih., 1897. 
18. Tritonium obliteratum Cossm., 1899. 
19. Marginella quemadensis v. Ih., 1897. 
20. Marginella confinis v. Ih., 1897. 
21. Voluta patagonica v. Ih., 1897. 
22. Cancellaria vidali Phil., 1887. 
23. Cancellaria ameghinoi v. Ih., 1897. 
24. Peratotoma 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 (?) 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. Photinula detecta Roch. & Mab., 1885. — Description unsatisfactory. 
6. Photinula 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. Voluta alta Sow., 1846, and v. Ih., 1899. — Identification probably incorrect. 
13. Terebra undulifera Roch. & Mab., 1899. — Perhaps = T. costellata. 
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- 
