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fully to be seen in fig. 5. This latter occurs on both the parietalia. 
For the rest I can refer to the author himself. 
I could not discover a trace of a sut. par. among 59 skulls of Mus 
decumanus, 9 of Mus rattus, 56 of Lepus cuniculus, 6 of Sciurus vul- 
garis, 4 of Erinaceus europaeus, 5 of Canis familiaris, 6 of Felis domes- 
tica, 4 of Mus musculus and among a number of other skulls of the 
most different mammals. In order to get information about our 
domestic animals I have written to Dr. VERMEULEN at Utrecht, Pro- 
sector at the “‘Rijks Veeartsenijschool”’ and this gentleman has as- 
sisted me with the greatest willingness for which I publicly render 
thanks to him here. A case of a sut. par. is known neither of Equus 
Fig. 5. 
eaballus, nor of Sus scrofa domestica and Bos taurus. To be sure with 
foals of Equus cases of smaller accessory sutures occur, beginning at 
the sutura sagittalis, but probably these are the above mentioned — 
“Randspalten. I want to mention separately that among 5 skulls 
of Cavia cobaya I found one with a divided os parietale. But in this 
case it happens to be very difficult to decide whether we find a real 
sut. par here, or a fracture in the skull. 
I dare not make this out with perfect certainty. The skull is 
of medium size and rather damaged. Both the arches are wanting, 
also the left squamosum and the right and left bulla tympani. The 
number of teeth is complete. The interparietale is separated from 
the surrounding bones, which is no more the case in older skulls. 
For the course of the dividing on the parietale I refer to figure 6. 
