SPOLIA NEMORIS. 123 
portion of the uterine wall against which the chorion is applied in situ. 
The numerous indentations and reticularly arranged spaces into which the 
chorionic villi fit are also covered by an epithelium which is generally some- 
what flatter than that of the chorion. The maternal as well as the foetal 
blood-vessels are indicated by a red colouring. It can here be seen that the 
separation which in Figs. 22 and 30 was brought about between muscularis 
and mucosa must have been facilitated by the intervening glandular region 
here indicated. The chorionic recess in this figure protrudes further inwards 
than those of Fig. 39. 
Utr. Mus. Cat. n° Nycticebus 45. 
Fie. 41.—One of the two compartments of the pregnant uterus at full 
- term of Tupaja javanica (cf. Fig. 17), opened by a longitudinal incision. 
The foetus was cut in two by this operation, the one half that is figured in 
-outline fitting in the uterine segment to which it remains attached. The 
vessels of the umbilical cord (which passes towards the dorsal side of the 
fcetus) are there seen to divide into four principal tracts, two for each 
placenta. The placenta which was situated to the right of the foetus is 
figured in the lower, that which was situated to the left of it in the upper 
segment. The latter has thus to be placed in situ by revolving downwards 
around its base line by 180°. The cut vessels at the top of the figure will 
then be seen to become continuous with those at the bottom of it. 
Utr. Mus. Cat. n® Tupaja 258. 
PLATE 12. 
All the figures natural size with the exception of Figs. 42, 46,55 and 56, 
which are enlarged twice. 
Fic. 42.—EHarly embryo of Manis javanica prepared out of the fetal 
envelopes that are represented in Fig. 44. Enlarged x 2. 
Utr. Mus. Cat. n* Manis 29. 
Fic. 43.—View of the inner surface of a pregnant uterus of Manis 
javanica that contained the foetus and fcetal envelopes of Figs. 42 and 44. 
Villosities on the inner uterine surface united into irregular bands. 
Utr. Mus, Cat. n° Manis 29. 
Fic. 44.—Fetal envelopes of Manis javanica that contained the foetus 
which is represented (enlarged twice) in Fig. 42. These foetal envelopes were 
obtained intact (after the uterus had been opened) by simply floating them 
out. The foetus was contained in the left part. The twisted projection 
stretching to the right was devoid of villosities, and measures about twice the 
length of the villiferous portion in which the foetus and yolk-sac were found. 
It is an example of an asymmetrical arrangement of the fcetal envelopes in 
contrast to those of Fig. 45. 
Utr. Mus. Cat. n° Manis 29, 
