the inside of it. The distance from the sut. par. to the sut. squam. 
is about 13 m. M. and from the first to the sut. sagittalis about 30 m. M. 
Under the place of origin of the sut. par. out of the sut. cor. we see 
the frontal bone penetrating into the parietale with a large round 
bend, which is abnormal, for generally a protruding part of the parie- 
tale penetrates into the frontal bone. With this we must compare 
e.g. Ranke’s (1) pictures of the Orang-outang on pp. 34, 36, 40, 
41, both on p. 42 and on p. 43. The linea temporalis is only to 
be seen on the frontale, not on the parietale. Besides squamosum 
and frontal bone show cerebral relief on the outside (SCHWALBE 21) 
which is known for Cercopithecus. On the squamosum the fissura 
suprasylvia posterior (?) 
is to be seen. Finally 
I want to point out the 
curving and incision of 
the sut. squam. in the 
squamosum. 
Papio maimon? Skull 
also belonging to the Mu- 
seum of the Zootomic. 
Laborat. of Leiden. Of 
this skull the petrosum 
and bulla tympani on the 
left side are wanting. Further it is complete. I have observed 
distinct rests of a sut. par. on the left os parietale. On the right 
side nothing is to be seen of it. The linea temporalis sup. and 
inf. are distinctly to be noticed. The os occipitale has two 
incisions on the right and on the left, perhaps rests of the sutura 
mendosa? The peculiarity of the sutura parietalis in this case is 
that this suture is not continuative. It rather consists of a number 
of holes and little holes and little pieces of suture, which are distinctly 
on one line, and run in the middle horizontally over the parietale. 
Besides this peculiar suture seems to show two branches, one on the 
back part and one on the front part of its course, so that we see a 
rather Z-shaped figure, in which the middle beam represents the 
proper suture and the upper and lower beams are branches of it. All 
three parts have been built in about the same way from holes in the 
skull. Thus far I have nowhere found the description of such a pe- 
culiar sutura parietalis, grown together for the greater part. To be 
