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The anterior nares, far in front, bounded by the premaxillaries, 
maxillaries and nasals. The orbits placed nearly vertically, and sur- 
rounded by the frontals, prefrontals, lacrymals, jugals, postorbitals and 
postfrontals. The infratemporal fossae formed by the post- 
orbital, jugal, quadratojugal and prosquamosal'), The supra- 
temporal fossae bounded by the parietal, postorbital, prosquamo- 
sal, and squamosal. The pineal foramen is placed between the 
parietals. The posttemporal fossae are surrounded by the 
posterior parietal processes, the squamosal, the paroceipital pro- 
cesses and the supraoceipital. 
The premaxillaries are small, strong, paired bones, sending 
short processes backwards between the nasals. They are connected 
with the maxillaries, nasals, and doubtless also with the vomer. There 
are three teeth; the anterior large and strong, followed by two smaller 
ones. The nasals are long bones, connected with the premaxillaries, 
maxillaries, prefrontals, and frontals. The frontals are of peculiar 
shape. They form a very short suture with the parietals, extend in 
front between the posterior ends of the nasals, and send out lateral 
processes, which take part in the upper border of the orbit. They 
join the nasals, prefrontals, postfrontals, and parietals. The parietals 
are quite small. They are not suturally united with the supraoccipital, 
but by cartilage. They send backwards processes to join the squa- 
mosal, thus producing a parieto-quadrate arch. The parietals are 
connected with the frontals, postfrontals, postorbitals, squamosals and 
supraoccipitals. 
The maxillaries are very large bones, which extend far upon 
on the side of the skull, reaching the postfrontals. There are 17 teeth, 
the first being very large and strong, and somewhat larger than the 
anterior incisor. Between the maxillaries and premaxillaries there is 
a deep excavation which is crossed by the suture. The alveolar border is 
gently convex downward. The maxillary is joined with the premaxillary, 
nasal, prefrontal, lacrymal and jugal above and the palatine below. The 
prefrontals are extensive bones, which take part in the anterior and 
upper border of the orbits. They join the frontals, nasals, maxillaries and 
lacrymals. The postfrontals bound the orbit above, and are placed 
between the frontal, parietal and postorbital. The lacry mals are large 
and very thin plates of bone; they form the anterior lower border of the 
orbits, and are joined to the prefrontal, maxillary and jugal. The 
1) G. Baur, Bemerkungen über die Osteologie der Schläfengegend 
der höheren Wirbeltiere, Anat. Anzeiger, Bd. X, 1894, p. 315—330. 
on 
