ORTMANN ! TERTIARY INVERTEBRATES. 
303 
The result of the foregoing considerations is : We regard the Patago- 
nian beds as of Lower Miocene age ; contemporaneous deposits are found , in 
the southern hemisphere , not only in Chili (' within the Navidad series ), but 
also in New Zealand ( Pareora beds of Hutton ) and Australia , and the 
faunas of these three localities (South America , New Zealand, and Aus- 
tralia ) show unmistakable affinities with each other . We shall return to 
this fact below. 
The Magellanian Beds. 
The “ Magellanian beds," discovered by Mr. Hatcher near Punta 
Arenas, were first described by the present writer in 1898, and the term 
“Magellanian beds” was introduced by him in 1899, and accepted by 
Hatcher (1900 a, p. 97). The stratigraphical position of these beds has 
been ascertained positively by Hatcher: they are several hundred feet 
below the Patagonian beds, and separated from them by the Punta 
Arenas coal (Upper Lignites of Hatcher, 1 . c., p. 99). 
Ameghino (1899, p. 12) has referred to this Punta Arenas section, and 
has attempted to correlate it with his subdivisions of the Patagonian for- 
mation, and, indeed, practically identifies our Magellanian beds with his 
“ Patagonian formation.” 
It is hardly necessary to pay any attention to this entirely unwarranted 
opinion (see: Ortmann, 1899, p. 427, first footnote). In what Ameghino 
calls his Piso Juliense in the Punta Arenas section (our horizon I), not a 
single Juliense species is present, but only plant remains have been found. 
What he calls Piso Leonense (our horizon II) does not contain a single 
Leonense fossil ; what he calls transitional beds between Patagonian and 
Suprapatagonian formation (our horizon III) contains only a single Pata- 
gonian species (Cardita elegantoides spec, nov.), but no other Patagonian 
or Suprapatagonian fossils. Such correlations are simply ridiculous, not 
to mention the fact that Ameghino’s subdivisions, as has been demon- 
strated above, have no reality at all. 
The following is the fauna of the Magellanian beds. (11 = lower hori- 
zon, III = upper horizon.) 
Relations. 
x Ostrea torresi (III) 0. beUovacina, Low. Eocene, Europe. 
Cardita elegantoides (III) identical species in the Patagonian beds. 
Lucina neglecta (II) ... L. promaucana, Patagonian beds. 
