48 
PATAGONIAN EXPEDITIONS ! PALAEONTOLOGY. 
INTRODUCTION. 
T HE Tertiary Invertebrates collected by Mr. J. B. Hatcher in Pata- 
gonia come chiefly from the so-called Patagonian beds (including 
the Suprapatagonian beds of Ameghino), and from what should 
be regarded as the type-localities of these beds : the mouth of the Santa 
Cruz River, and the neighborhood of San Julian. Besides, there are 
smaller collections from deposits both below and above the Patagonian 
beds, especially from marine horizons first discovered by Mr. Hatcher, 
which have been called “Magellanian ” and “Cape Fairweather ” beds 
respectively. 
In order to give the most accurate indication of the localities that have 
yielded the fossils I shall point out here the position of the different places 
mentioned in the text, and shall refer the reader to the map of southern 
Patagonia published by Hatcher (1900 a, pi. 1), where most of the local- 
ities are indicated. 1 
1. Mouth of Santa Cruz River ; situated at about 50° S. L. on the east- 
ern coast of Patagonia; bluffs on the south side of the river, from water’s 
edge to about 250' above high tide. (See description of locality by Hatcher, 
1900 b, p. 264.) 
2. Pescadores ; a little below Las Salinas (see below), on the Santa 
Cruz River; ca. 50' above high tide. 
3. Paso del Rio Santa Cruz ; 2 miles above Las Salinas, at about high 
tide level. 
4. Las Salinas; 30 miles above the mouth of the Santa Cruz River; 
ca. 200 above high tide. 
5. Mount of Observation ; ca. 50 miles S. W. of Santa Cruz, on the 
eastern coast of Patagonia. 
6. San Julian , Oven Point; ca. 50 miles N. E. of Santa Cruz. 
7. San Julian , Darwin Station; ca. 10 miles to the south of the latter 
locality. 
1 The geographical location of “Jegua quemada,” “La Cueva,” and “Jack Harvey,” given 
frequently by v. Ihering (according to Ameghino) for Patagonian fossils is unknown. Mr. 
Hatcher has tried to ascertain their situation, but failed to do so. 
