PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
EXPLANATION OF PLATE XXX. 
Fig. i. Panopea regularis (Ortm.) ........ 
Patagonian beds. 
i a. Outer view of fragmentary left valve. Mouth of Santa Cruz 
River 250' above high tide. 
ib. Cardinal view of a double cast. Lake Pueyrredon, base. 
Fig. 2. Panopea quemadensis (v. Ih.) ........ 
Patagonian beds ; mouth of Santa Cruz River. 
Outer view of left valve. 
Fig. 3. Lutraria (?) undatoides Ortm. ....... 
Lower Magellanian beds ; Punta Arenas. 
Cast of left valve. 
Fig. 4. Corbula hatcheri Ortm. .... 
Patagonian beds ; mouth of Santa Cruz River. 
4 a. Outer view of right valve. 
4 b. Cardinal view of another, double individual. 
4 c. Ventral view of the same. 
Fig. 5. Martesia patagonica (Phil.) ........ 
Patagonian beds ; Mount of Observation, upper horizon. 
Outer view of right valve. 
Fig. 6. Martesia pumila Ortm. ........ 
Patagonian beds ; mouth of Santa Cruz River. 
6a. Outer view of cast of right valve. 
6b. The same, 2/1. 
Fig. 7. Patella pygmaea Ortm. ........ 
Upper Magellanian beds ; Punta Arenas. 
7a. Side view, natural size. 
7b. Upper view, natural size. 
jc. The same, 3/1. 
Fig. 8. Fissurella eurytreta Cossm. ....... 
Patagonian beds ; upper Rio Chalia. 
Upper view of cast. 
Fig. 9. Leptothyra philippii Cossm. ....... 
Patagonian beds ; mouth of Santa Cruz River. 
9 a. Side view of shell. 
9 b. The same, 4/1. 
Fig. 10. Liotia scotti Ortm 
'Patagonian beds ; mouth of Santa Cruz River. 
10a. Side view. 
10 b. Lower view. 
10c. Upper view, 3/1. 
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