REPliODUCTIVE CYCLE IN DASYURUS VIVERRINUS, 151 
dealt with by Saudes ( 22 ). It need only here be mentioned 
that the corpora lutea essentially resemble those of Eutheria 
in their mode of development and structure. Saudes (p. 380) 
states that the corpus luteum forms quickly, within three 
days [after ovulation], and persists [not only throughout 
pregnancy but] during the greater part of the time that the 
animal is lactating, ultimately disappearing when the youug 
animal is capable of leading an independent existence.’^ The 
changes in the pouch, including its sebaceous, sweat, and 
mammary glands have been described elsewhere (O’Donoghue 
( 20 )), whilst a preliminary account of the arrangement of 
the foetal membranes, the placentation, and the mode of 
parturition, has also been published (Hill (13)). 
Early Pregnant Uteri. 
Case 1 (No. 15, 19 . vii . ^01) (PI. 6, fig. 5). — We give here 
for purposes of comparison a brief account of the utei-us of a 
pregnant female with ova at the stage before the separation 
of the yolk-body and shortly after entering the uteri. 
The record of this female is a very complete one, extending 
over a period of forty-one days. W e reproduce it here : 
8 . vi . ^01. — Resting ; so on to 6 . vii . ^01 . 
9 . vii . ’01. — Cloacal margins very slightly swollen. 
10 . vii . ’01. — Fresh male in; no copulation. 
11 . vii . ’02. — Cloacal margins swollen, but not greatly. 
13. vii. ’02. — Cloacal margins swollen. Fresh male in; 
copulation. 
17. vii. ’02. — Pouch hardly altered; cloacal swelling still 
present. 
18 . \ii . ’02.— Pouch very slightly tumid, very dirty. 
19 . vii . ’02. — Pouch distinctly tumid, not cleaned. 
Killed, i.e. six days after copulation. 
The uteri measured P3 cm. by P3 cm. by ’7 cm., the left 
containing ten ova and the right fifteen. 
The mucosa has a maximum thickness of 2T mm. The 
uterine epithelium (•016-'018 mm. thick) is little advanced, 
