274 
PATAGONIAN EXPEDITIONS ! PALAEONTOLOGY. 
locality that differs in the character of the deposits is the next, near San 
Julian. 
San Julian , Oven Point; near the water’s edge, not over io' above 
high tide. This horizon is distinctly lower than any of the beds at Santa 
Cruz. Facies : sandy, with shell-fragments. 
* Cidaris antarctic a. Heteropora pellicnlata. 
Toxopnenstes precursor. J * Terebratella patagonica. 
J Scutella patagonica. L & S * Ostrea ingens. 
J * Schizaster ameghinoi. J & S Pecten geminatus. 
Serpula patagonica. Mytilus magellanicus. 
Terebella magna. *Gibbula Icevis. 
* Aspidostoma gigauteum. * Infundibulum corrugatmn. 
* Turritella patagonica. 
S * Struthiol aria ameghinoi. 
J Siphonalia noachina. 
* Trophon patagonicus. 
* Voluta gracilior. 
Balanus varians. 
Although this locality represents the lowermost horizon of the whole 
series known on the coast of Patagonia, we have here no less than 3 
species, which are Suprapatagonian, according to Ameghino and v. Iher- 
ing. For the rest, Juliense species prevail. Of the 20 species, 12 
(marked *) have been found at Santa Cruz. 
San Julian , Darwin Station; at a higher horizon than Oven Point. 
Matrix resembling that of Santa Cruz. This horizon seems to be about 
the same as the lowermost part of the Santa Cruz section. 
* Cidaris antarctica. 
J Hypechinus patagonensis . 
Serpula patagonica. 
J * Terebratella patagonica. 
Heteropora pellicnlata. 
J * Pecten prcenuncius. 
J & S * Pecten geminatus . 
* Corbula hatcheri. 
* Panopea regular is. 
* Panopea quemadensis. 
* Dentalium sulcosum. 
S * Seal aria rugulosa. 
*Natica ovoidea. 
* Turritella sp. 
Vernietus incertus. 
S * Struthiolaria ameghinoi. 
* Py ml a Carolina. 
J Siphonalia noachina. 
Murex hatcheri. 
* Trophon patagonicus. 
Fusus archimedis. 
* Voluta gracilior. 
* Cancellaria gracilis. 
Scalpellum juliense. 
Balanus varians . 
* Geryon peruvianus. 
Of these 26 species, 17 are also found at Santa Cruz (marked *). Again 
here, Juliense species prevail ; typical Leonense species are wanting, but 
3 characteristic Suprapatagonian species are present. 
It is impossible to decide which one of these two localities near San 
Julian is to be regarded as the type-locality of Ameghino’s “ Piso Juli- 
ense.” Both contain a number of Juliense fossils (each 5), of which 3 
( Terebratella patagonica , Pecten geminatus , Siphonalia noachina') have 
been found at both. The fact that the matrix at Darwin Station ap- 
