MACROPID#.—DIDELPHIS, 137 
The Povcnep Movss. Antechinus ——? 
a, 6. Skulls. W. Australia. From Mr. Gould’s Collection. 
Antechinus albipes. 
*a, *b. Darling Downs, New South Wales. From Mr. Gould’s Col- 
lection. 
c. Skull. Presented by G. R. Waterhouse, Esq. 
Antechinus unicolor. 
a. Skull. 
Antechinus minutissimus. 
*a, Skull. 
MYOICTIS. 
Teeth :—Incisors = ; Canines is ; Premolars $3 Molars pa = 36. 
Myoictis wallacii. 
Gray, Proc. Zool. Soc. 1848, p. 112. figs. 1-4 (skull); Ann. & Mag. 
Nat. Hist. ii. 1858, p. 228. figs. 6-9 (skull). 
*a, Skull. Aru Island. From Mr. Wallace’s Collection.—The 
specimen figured in Proc. Zool. Soc. 
MYRMECOBIUS. 
Teeth :—Incisors <4; Canines 1; Molars =5;=52. 
The Myruecosius. Myrmecobius fasciatus. 
Waterhouse, Trans. Zool. Soc. ii. p. 149. pl. 28 (skull); Nat. Hist. 
Mamm. i. p. 394. pl. 21. fig. la, 6 (skull).— Owen, Odont. i. p. 377, 
ii, pl. 98. fig. 4 (skull); Odont., Art. ip Encycl. Brit. p. 448. fig. 74 
(dentition), 
a. Skull. Swan River. From Mr. Gould’s Collection. 
b. Skull. Swan River. From the Zoological Society’s Collection. — 
The specimen figured by Mr. Waterhouse in Trans. Zool. Soc. ii. 
DIDELPHIS. 
M 
55 
1-1? 
Teeth :—Incisors = ; Canines 
a4 4 
Premolars 3; Molars 4 ;=50. 
The Opossum. Didelphis virginiana. 
Burmeister, Faun. Bras. taf. 5. fig. 1 (skull), 1856.—Owen, Odont. 
pl. 98. fig. 6 (teeth), 1840-5; Odont., Art. in Encycl. Brit. (mew 
edit.) p. 448. fig. 76 (dentition).— Gervais in Castelnau, Amérique 
du Sud, p. 97. pl. 20. fig. 7 (dentition), 
