NO. 5 



MAMMALS OF PANAMA GOLDMAN 



27 



respectively. While the total rainfall is more copious in the huniid 

 than in the arid division, the nujst important dift'erence between the 

 two sections is in the comparative continuity of the supply, and its 

 efTect on the fauna atid flora. Thus, in the humid division moisture 

 in the form of rain or foj^ is received at very short intervals through- 

 out the year, and when the nights are clear heavy dew exerts its 

 refreshing influence on the vegetation, whereas in the arid division 

 long periods of drought prevail. As a result of these contrasting 

 conditions the leaves are persistent and an evergreen forest, the 

 " rain-forest " of authors, uniformly overspreads the humid division, 

 while in the arid division the leaves are largely deciduous, the forest 

 turns brown during the dry season, and may be interrupted by open, 

 grassy savannas which become parched in appearance. These zonal 

 differences, so well reflected in the character of the flora, are asso- 

 ciated with corresponding changes in the fauna. 



Mamtnals of Lower Tropical Zone 

 [Species marked U. occur also in Upper Tropical Zone] 



panamensis, Panama Water 



Chironectes 

 Opossum. 



Didelphis tnarsupialis etensis, Eten Opos- 

 sum; Zorro. 



Didelphis tnarsupialis particeps, .San Miguel 

 Island Opossum. 



Didelphis tnarsupialis battyi, Batty's Opos- 

 sum. 



Marmosa tnexicana isthtnica. Isthmian Mar- 

 mosa. 



Marmosa tnexicana savannarutn, Savanna 

 Marmosa. 



Marmosa fulviventer, Fulvou»-bellicd Mar- 

 mosa. 



Marmosa invicta. Black Marmosa. 



Metachirus opossum fuscogriseus, Allen's 

 Opossum; Zorro. 



Metachirus nudicaudalns dentaneus, Brown 

 Opossum; Zorro. 



Philander laniger derbianus, Derby's Woolly 

 opossum. 



Philander laniger pallidus. Pale Woolly 

 Cjpossum. 



Philander laniger nauticus, Insular Woolly 

 Opossum. 



Peramys melanops, Panama Peramys. 



Uradypus griseut griseus. Gray Three-toed 

 Sloth. 



Rradypus ignavus, Panama Three-toed 

 Sloth. 



Cholocpus hoffmanni, IIofTmann's Two-toed 

 .Sloth; Pcrico Lijero. 



Cyclopes didactylus dorsalis, Costa Rican 

 Twotord Anteater. 



Tamanduas tetradactyla chiriquensis, Chiri- 

 qui Three-toed Anteater. 



Myrmecophaga tridactyla centralis. Central 



American Great Anteater. 

 Dasypus novemcinctus fenestratut, Costa 



Kican Four-toed Armadillo. 

 Cabassous centralis. Central American Five- 

 toed y\rmadillo. 

 Trichechus manatus. Manatee. 

 I'ecari anyulatus bangsi. Bangs' Collared 



Peccary; Zaiiino. U. 

 Tayassu pecari spiradens, Costa Rican 



White-lipped Peccary. U. 

 Odocoileus chiriquensis, Chiriqui White- 



taile'l Deer. 

 Odocoileus rothschildi, Rothschild's White- 

 tailed Deer. 

 Mazama sartorii reperticia, Canal Zone 



I'orest Deer. 

 Tapiretla hairdii, Baird's Tapir. U. 

 'I'ylomys panamensis, Panama Climbing; Rat. 

 Tylomys watsoni, Watson's Climbing Rat. 

 Zygodontomys cherriei cherriei, Cherrie's 



Cane Kat. 

 Zygodontomys cherriei ventriosus, Canal 



Zone Cane Rat. 

 y.ygodotttomys seors^is, Siw Miguel Island 



Cane Rat 

 Neacotnys pictus, Painted Bristly Mouse 

 Oryeomys gatunensis, Gatun Rice Rat. 

 Oryeomys alfaroi darientis, Darien Rice 



Rat. U. 

 Oryeomys bombycinus bombycinus. Silky 



Rice Rat. 

 Oryzomys talatnanc<r, Talamanca Rice Rat. 

 Orysomys tectus tectus, Bugaba Rice Rat. 

 Oryeomys tectus frontalis, ( iinizal Rice 



kat. 



