PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 



EXPLANATION OF PLATE XXIX. 



PAGE 



Fig. i. MERETRIX(?) PSEUDOCRASSA (Ortm.) 142 



Upper Magellanian beds ; Punta Arenas. 

 i a. Outer view of right valve. 

 ib. Hinge of the same. 



Fig. 2. DOSINIA MERIDIONAI.IS V. Ih. . . . . . . . 145 



Patagonian beds ; mouth of Santa Cruz River. 

 2a. Outer view of left valve. 

 zb. Hinge of the same. 

 zc. Inner view of a smaller right valve. 



Fig. 3. TELLINA TEHUELCHA v. Ih 147 



Patagonian beds ; Shell Gap, Rio Chico, upper horizon. 

 Cast of left valve. 



Fig. 4. PSAMMOBIA PATAGONICA Phil. . . . . . . . 149 



Patagonian beds ; mouth of Santa Cruz River. 



Outer view of left valve. 

 Fig. 5. PANOPEA IBARI Phil. ......... 152 



Lower Magellanian beds ; Punta Arenas. 

 Two valves, imbedded in matrix. 



Fig. 6. PANOPEA SUBSYMMETRICA (Ortm.). 153 



Upper Magellanian beds ; Punta Arenas. 



Outer view of right valve. 

 Fig. 7. PANOPEA PILSBRYI Ortm. ...... . 154 



Cape Fairweather beds ; Cape Fairweather. 



Cast of right valve. 

 Fig. 8. MACTRA (?) DARWINI Sow. . . ... . . . . 1 49 



Patagonian beds ; mouth of Santa Cruz River. 



Outer view of right valve. 

 Fig. 9. MACTRA GARRETTI Ortm. ........ 150 



Patagonian beds; Mt. of Observation, upper horizon. 

 ga. Outer view of left valve. 

 9$. Inner view of the same. 

 gc. Hinge of the same, 2/1. 

 9</. Hinge of right valve, 2/1. 



All of the figures, unless otherwise stated, are natural size. 



(VOL. iv) 



