124 A. A. W. HUBREOHT. 
Fic, 45.—Manis javanica. Embryo of about the same age in its foetal 
envelopes, the latter more symmetrically developed than in Fig. 44. The 
streaks and bands on the surface corresponding to villous bands on the uterine 
wall are clearly visible. The yolk-sac is internally applied against the lower 
concave surface. 
Utr. Mus. Cat. n°* Manis 71. 
Fic. 46.—Tarsius spectrum. Young embryo removed out of its enve- 
opes, seen in profile. Enlarged 2. 
Utr. Mus. Cat. n® Tarsius 11. 
Fic. 47.—Nearly ripe foetus of Tarsius spectrum enclosed in all its 
membranes. The discoid placenta is here visible at the top. The only point 
of adhesion with the uterine wall is found in the midst of this placentary 
disc (cf. Figs. 18 and 19). 
Utr. Mus. Cat. n® Tarsius 10. 
Fic. 48.—Feetus of Tarsius of about the same age removed out of its feetal 
membranes. 
Utr. Mus. Cat. n° Tarsius 15. 
Fie. 49.—The foetal membranes of a Tarsius at full term after the removal 
of the foetus. Discoid placenta and umbilical cord distinct. 
Utr. Mus. Cat. n® Tarsius 101. 
Fig. 50.—Feetus of Nycticebus tardigradus enclosed in its villiferous 
chorion. Obtained by very gently turning upside down the opened uterus 
(Fig. 51) in which it was enclosed. 
Utr. Mus. Cat. n° Nycticebus 84. 
Fie. 51.—One half the uterus of Nycticebus in which the foetus of Fig. 50 
has been enclosed. View of the inner surface. 
Utr. Mus. Cat. n° Nycticebus 84. 
Fie. 52.—The mucosa of Nycticebus of the stage represented in Figs. 22 
and 80, peeled off from the muscularis and seen from the inside. 
Utr. Mus. Cat. n°: Nycticebus 24. 
Fic. 53.—Nycticebus fcetus in all its envelopes, the latter being more folded 
than in Fig. 50. 
Utr. Mus. Cat. n° Nycticebus 28. 
Fic. 54,—A later foetus of Nycticebus prepared out of its envelopes, part 
of which are still in connection with the umbilical cord and visible above the 
head of the foetus. 
Utr. Mus. Cat. n° Nycticebus 54. 
Fic. 55.—The villiferous chorion in a very late stage of pregnancy. En- 
larged x 2. To the right the villi are more flattened (ef. Fig. 35). 
Utr. Mus. Cat, n°* Nycticebus 34. 
