74 
Annals or the Transvaal Museum 
Distance of these points to the central ridge on the upper 
surface. 33 mm. 
Breadth of the bone at the oral edge, where the sutures 
appear on the palate 70 mm. 
Length of the parallel ridges on the palatal surface, about 36 mm. 
Axial distance of these ridges, about 20 mm. 
From this we see further that, while most of the dimensions are pro- 
portionately much larger, the breadth of the premaxillary is just as large 
as in latirostris (see 4 ). The mutual distance of the points Under the 
nostrils mentioned above is in Putterilli 12 mm. larger than in latirostris , 
but the distance of these points to the central ridge is in both species the 
same. The mutual distance of the central ridge and the line connecting 
the mentioned points is therefore absolutely smaller in Putterilli than in 
latirostris. 
The Maxillaries. 
These elements have also the same general shape as in latirostris • 
They even seem to be in touch with the same bones as in that species. 
However, the suture between the prefrontal and the lacrymal is very 
indistinct, and it could therefore not be made out whether the maxillary 
and the prefrontal touch each other or not. 
The facial surface is not divided in two as in latirostris. As in that 
species the upper part is covered with fine striae, but on the other hand 
it does not form an angle with the lower part. There are broad and deep 
hollows between the nostrils and the orbital cavities, which are probably 
the result of severe pressure (PI. X). The front part of the maxillaries 
is concave in a direction transverse to its length. As in latirostris there is 
a ridge, running near and parallel to the suture with the premaxillary. 
This ridge terminates at the hinder end of the nostril ; it is high, narrow, 
and acute below the nostril, becomes flatter further forward and disappears 
before nearing the oral cavity. The ridge, which forms the outer edge 
of the maxillary, is thin and relatively acute. 
Dimensions : 
Distance between the point where the suture with the 
premaxillary disappears in the oral cavity and the 
hinder end of the jugal process (for so far visible) ^170 mm. 
Greatest breadth near the orbital cavity •. -dj 80 mm. 
Average breadth of the lower part 45 mm. 
The last dimension is in latirostris 42 mm. and therefore nearly as large 
as in Putterilli. The length of the bone in latirostris is, however, much 
less than in Putterilli. The maxillaries of these forms give therefore totally 
different proportions. 
The Nasals. 
These are proportionately longer than those of latirostris. They are 
bounded by the premaxillary, the septomaxillaries, the maxillaries, the 
prefrontals, and perhaps the lacrymals and the frontais. The sutures 
are, however, too obscure in the vicinity of these bones to be able to decide 
with some certainty about it. 
