PATAGONIAN EXPEDITIONS ! PALAEONTOLOGY. 
EXPLANATION OF PLATE XIII. 
Fig. I. SCHIZASTER AMEGHINOI V. Ih. . . ... . . 
Patagonian beds. 
i a. Upper view of an almost complete cast; Mouth of Santa 
Cruz River. 
ib. Upper view of fragment of shell, showing fasciole ; Oven 
Point, San Julian. 
Fig. 2. Serpula patagonica Ortm. ... . . . . . 
Patagonian beds; Oven Point, San Julian. Colony on a fragment of Pecte7i. 
Fig. 3. Melicerita triforis Ortm 
Patagonian beds ; Upper Rio Chalia. 
3#. Fragment of zoarium. 
3 b. Zooecia, enlarged. 
Fig. 4. Aspidostoma giganteum (Bsk.). ... . . . . 
Patagonian beds ; mouth of Santa Cruz River. Group of zocecia, with 
ooecium, enlarged. 
Fig. 5. Tennysonia subcylindrica Ortm. ....... 
Patagonian beds ; mouth of Santa Cruz River. 
m 
5 a. Zoarium. 
5 b. Fragment of branch, showing zooecia, etc., enlarged. 
Fig. 6. Heteropora pelliculata Wat. 
Patagonian beds ; Oven Point, San Julian. Zoarium. 
Fig. 7. Terebratella dorsata (Gmel.). ....... 
Patagonian beds ; Lake Pueyrredon, base. 
7#. Anterior view of a large individual. 
7<5. Front view of the same. 
7z. Anterior view of a smaller, oblique individual. 
7<Z Anterior view of an unusually elongate individual (transi- 
tional to T. patagonica). 
Fig. 8. Terebratella patagonica (Sow.). ....... 
Patagonian beds. 
8a. Anterior view of elongate variety ; Lake Pueyrredon, base. 
8b. Anterior view of a very large individual of usual outline ; 
Oven Point, San Julian. 
Fig. 9. Bouchardia zitteli v. Ih. ........ 
Patagonian beds : Lake Pueyrredon, base. 
9 a. Anterior view, natural size. 
9 b. The same, 2/1. 
All of the figures, unless otherwise stated, are natural size. 
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