2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



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7. Fig. I. — Destruction of forest by rising waters of G3tun Lake. Fig. 



2. — Destruction of forest by rising waters of Gatun Lake 9 



8. Fig. 1. — Rio Tuyra at Boca de Cupe. Fig. 2. — Rio Cascajal near Porto 



Bello 10 



9. Fig. 1. — Cuipo tree (Cavanillesia platanifolia) . Fig. 2. — Base of Cuipo 



tree showing characteristic buttresses 11 



10. Fig. I. — Cana, eastern Panama, showing adjacent forested slopes. 



Fig. 2. — Cana, eastern Panama. Looking east across Cana Valley. . 14 



11. Fig. 1. — Humid Lower Tropical Zone near Cana. Fig. 2. — Humid 



Lower Tropical Zone forest interior at 300 feet altitude on northern 

 basal slope of Mount Pirre 15 



12. Fig. 1. — Arid Lower Tropical Zone near southern base of Cerro Azul. 



Fig. 2. — Humid Lower Tropical Zone near summit of Cerro Azul. 26 



13. Fig. 1. — Humid Lower Tropical Zone. An aquatic environment in the 



lower Chagres Valley near Bohio. Fig. 2. — Humid Lower Tropical 

 Zone. Typical section of forest interior near Gatun 27 



14. Fig. I. — Ivory nut palm (Phytelephas) , showing method of gathering 



nuts. Fig. 2. — Ivory nut gatherer's hut showing product of his 

 industry heaped in foreground 30 



15. Fig. 1. — Ferns of Humid Lower Tropical Zone near Cana. Polypodium 



aureum in center. Fig. 2. — Ferns of Humid Lower Tropical Zone, 

 near Cana. Largely Dicranopteris bifida 31 



16. Fig. 1. — Savanna near southern base of Cerro Azul. Fig. 2. — Savanna 



near Corozal 36 



17. Fig. 1. — Upper Tropical Zone at 3,500 feet altitude on Mount Pirre. 



Fig. 2. — Upper Tropical Zone near summit of Mount Pirre 37 



18. Fig. 1. — Chiriqui White-tailed deer (Odocoileus chiriquensis). Fig. 



2. — Allen's Opossum (Metachirus opossum fuscogriseus) 44 



19. Darien Pocket Gopher (Macrogeomys dariensis) 45 



20. Fig. 1. — Skull of Metachirus nudicaudatus dentaneus. Fig. 2. — Skull 



of Chironectes panamensis 246 



21. Fig. 1. — Skull of Peramys melanops. Fig. 2. — Skull of Marmosa 



invicta. Fig. 3. — Skull of Marmosa mexicana isthmica 247 



22. Fig. 1. — Skull of Bradypus ignavus 248 



23. Fig. 1. — Skull of Rheomys raptor. Fig. 2. — Skull of Neacomys pictus. 



Fig. 3. — Skull of Zygodontomys cherriei ventriosus. Fig. 4. — Skull 

 of Rhipidomys scandens. Fig. 5. — Skull of Peromyscus pirrensis. 

 Fig. 6. — Skull of Nectomys alfari efficax 249 



24. Fig. 1. — Skull of Orysomys (Orysomys) alfaroi dariensis. Fig. 2. — 



Skull of Orysomys (Orysomys) gatunensis. Fig. 3. — Skull of 

 Orysomys (Orysomys) bombycinus bombycinus. Fig. 4. — Skull of 

 Orysomys (Melanomys) caliginosus idoneus. Fig. 5. — Skull of 

 Orysomys (Orysomys) pirrensis. Fig. 6. — Skull of Orysomys 

 (Orysomys) tectus frontalis 250 



25. Fig. 1. — Skull of Heteromys desmarestianus panatnensis. Fig. 2. — 



Skull of Heteromys desmarestianus crassirostris. Fig. 3. — Skull of 

 Heteromys desmarestianus sonalis. Fig. 4. — Skull of Heteromys 

 australis conscius. Fig. 5.— Skull of Macrogeomys dariensis 251 



