PERAMYS. 1'HII \\DKR. 



region and between eyes mouse-gray; flanks blackish slate; underparts 

 and lower side of limbs silvery white; hairs on scrotum white to roots; 

 chin, lips and lower part of cheeks white-; untorbital spot black; wrists 

 and ankles dusky; tail above dark, beneath paler. Ex type in United 

 States National Museum. 



Measurements. Total length, 248; tail, 137; hind foot, 19. 

 Skull: Total length, 30.7; Hensel, 27.5; zygomatic width, 16; inter- 

 temporal width, 6.1; length of nasals, 13.8; length of upper molar 

 series, 11.2. Ex type in United States National Museum. 



Genus Peramys. 



Peramys Lesson, Nouv. Tabl. Regne Anim. Mamm., 1842, p. 187. 



Type, Didelphys brachyura Schreber. 

 Peramys melanops Goldman. 



Peramys melanops Goldm., Smith. Misc. Coll., LX, No. 2, 191:, 

 p. 20. 



Type locality. Cana, eastern Panama. Altitude 2000 feet. 



Color. Head and top of upperparts cinnamon, grading into almost 

 black at rump; cheeks and sides cinnamon; throat and sides of belly 

 mouse-color; a median stripe, buffy on neck, changes to white and 

 broadens out until it occupies most of the chest and then narrows 

 again from chest to root of tail; chin with a central white spot; hands, 

 feet and tail black; ears dusky. Ex type in United States National 

 Museum. 



Measurements. Total length, 168; tail, 60; hind foot, 16.5. 

 Skull: (broken). Total length, 26.8; Hensel, 25; length of nasals. 

 13.7; length of upper molar series, 9.5; length of mandible, 19.1: 

 length of lower molar series, 9.6. Ex type in United States National 

 Museum. 



Genus Philander. 



Philander Brisson, Reg. Anim., 1762, p. 207. Type Didclphis 



philander Linn. 

 Philander centralis Hollister. 



Philander centra! Is Hollister, Proc. Biol. Soc. Wash., XXVII, 



1914, p. 103. 



Type locality. Talamanca, Costa Rica. 



Gent. Char. Median facial stripe, orbital ring, stripe behind eye 

 and side of nose Prout's-brown ; muzzle, eheeks and forehead grayish 



