1 88 Bulletin American Museum of Natural History, [Vol. XIV, 

 PLATE XXIV. 



DIDELPHIS PERNIGRA, D. MARSUPIALIS TABASCENSIS, AND D. 

 RICHMONDI. 



All figures \ nat. size. 



Figs. i-ia. Didelphis pernigra, ? ad., No. 16071, Am. Mus., Inca Mines, 

 Peru. Type of the species. 



Figs. 2-2a. Didelphis marsupialis tabascensis, $ ad., No. 5 8687, U. S. Nat. 

 Mus., Mirador, Vera Cruz. 



Figs. 3-3^. Didelphis richmondi, $ ad., No. 45140, U. S. Nat. Mus., 

 Greytown, Nicaragua. 



PLATE XXV. 



YOUNG OF DIDELPHIS VIRGINIAN A AND D. MARSUPIALIS, TWO 



STAGES. 



Figures \ nat. size. 



Fig. I. Didelphis marsupialis, very young. No. 34502, U. S. Nat. Mus., 

 Etzaplan, Jalisco, Mex. Comparable with Fig. 3, D. virginiana. 



Fig. 2. Didelphis marsupialis, somewhat older than the specimen illustrated 

 in Fig. i, and comparable with Fig. 4. No. 34560, U. S. Nat. Mus., Tulan- 

 cingo, Hidalgo, Mex. 



Fig. 3. Didelphis virginiana, very young, corresponding in age to the 

 specimen illustrated in Fig. I. No. 36142, U. S. Nat. Mus., Hartshorne, 

 Ind. Ter. 



Fig. 4. Didelphis virginiana, somewhat older than the specimen shown in 

 Fig. 3, and comparable with Fig. 2. No. 34560, U. S. Nat. Mus., Marble 

 Cave, Mo. 



