SPOLIA NEMORIS. 101 
kubin or kubing, krendéh-kentjeng, and walang kékkes (some- 
times also applied to the flying squirrel or walang kdpo). 
Tupaja. Figs. 12—17, 41, 59, 60. 
This small Insectivore, which, as the vernacular name of 
Tupaj indicates, might easily be confounded with squirrels, was 
common in the plantations of coffee and cinchona in the 
Preanger districts. It often goes by the name of coffee rat, 
kekkés being the name by which the inhabitants of the above- 
mentioned districts generally designate it. 
Tupaja has never more than two young at a time, as was 
noticed above. A uterus in an advanced stage of pregnancy is 
represented in fig. 17, the vaginal portion being here cut away. 
Most marked in this figure is the prominence of two reniform 
regions in the uterine wall. If the uterus were turned over, two 
exactly similar patches would be noticed. As in each of the 
two swellings only one embryo is contained, it follows that 
the placenta of Tupaja javanica must necessarily be double.' 
This is, in fact, the case, the two placentas lying right and left 
of the foetus. They are connected with it (as fig. 41 distinctly 
proves) by an umbilical cord. This commences as a single 
strand of tissue, then bends upwards along the fetus’ side, and 
only divides into a quadruple set of blood-vessels above the 
foetus’ back. Two of these latter strands (each containing two 
vessels) continue in the same course, and vascularize the 
placenta which is situated on the side opposite to that where 
the umbilical cord passes upward, whereas the two other strands 
bend at an angle of 180° and vascularize the placenta that is on 
the same side as the umbilical cord. Fig. 41 will make all this 
clear; it was taken after one of the two swellings of the uterus 
was longitudinally cut open, the foetus being also halved. 
The perfect regularity in the situation of the two placentas 
of each foetus is a phenomenon in which the maternal tissue 
plays a prominent part. If we examine transverse sections of 
very much earlier stages of pregnancy, such as are represented 
1 « Proces Verbaal der Koninkl. Academie van Wetenschappen te Amster- 
dam,’ 27 Mei, 1893. 
