140 MACROPIDE.—CHIRONECTES. 
The Marmosr. Philander murinus. 
Cervical vertebre.............. fi 
Dorsal: 5. au asses eae 13 
amber ages ese eds waa eS 6 
aera Scie dora ems a wee EN 2 
Caldaligs ay duhwigassaenesae 37 
*q, Skull. §. America. 
6. Skeleton: male. Brazil. From M. Verreaux’s Collection. 
Merrian’s Opossum. Philander dorsigerus. 
*a. Skull. Para. Presented by R. Graham, Esq. 
*b. Skull. 
MICRODELPHYS. 
Microdelphys tristriata. 
Burm., Faun. Bras. taf. 11. fig. 7 (skull). 
THYLAMYS. 
: = . -1 = 
Teeth :—lIncisors es ; Canines s ; Premolars =; Molars = 3;=50. 
The Execant Parntrp Mouse. Thylamys elegans. 
Waterhouse, Nat. Hist. Mamm. i. pl. 22. fig. 3 (skull). 
a*—*d. Skulls. Chili. From Mr. Bridges’ Collection. 
é, f. Skeletons. Chili. From Mr. Bridges’ Collection. 
Thylamys agilis. 
Grymeomys agilis, Burm., Faun. Bras. taf. 11. fig. 6 (skull). 
CHIRONECTES. 
Teeth :—Incisors =e Canines G3 Premolars =; Molars 3=50. 
The Yapocx. Chironectes variegatus. 
ia et ag ae Burm., Faun. Bras. p. 74, taf. 11. fig. 8 (skull).— 
rervais in Castelnau, Amérique du Sud, p. 101. pl. 20. fig. - 
tition), 1855, i i are ia 
*qa, Skull. Brazils. 
*h, Skull. Brazils. From Mr. Brandt’s Collection. 
