TOMISTOMA AFEICANUM. 
271 
portion, showing that the quadrate articulation was almost simply cylindrical as in 
Gharialis, and not saddle-shaped as in Tomistoma schlegeli. 
The teeth are twenty in number on either side, and the first and fourth are 
somewhat larger than the others. Behind the fourth there are two smaller sockets, 
then the alveoli are larger and remain about the same size till close to the hinder end 
of the series, where the last two or three decrease in size. With the excey)tion of 
larger gaps between the second and third and the third and fourth teeth, they are all 
about equidistant from one another. The alveoli have prominent borders and open 
Text-fig. 86. 
Anterior portion of snout of Tomistoma africanum, with the upper and lower jaws in their natural 
relation to one another : A, from right side ; B, from above. 
1-5, premaxillary teeth. | nat. size. 
rather more outwards and forwards than in Tomistoma scMegeli. There seem to be no 
pits for the reception of the points of the upper teeth. 
This mandible is referred to a species of Tomistoma on account of the comparatively 
small number of teeth in the jaw as a whole, 20 on each side, and the number (14) in 
the symphysial region. In T. schlegeli there are 20-21 teeth in all, 14 or 15 being 
in the symphysial portion of the jaw ; in Gharialis, on the other hand, there are 25-26 
teeth, of which 23-24 are symphysial. The dimensions of the type specimen are 
given below. 
