206 MEMOIRS OF THE CARNEGIE MUSEUM 
cisors, but on the anterior portion of the palate, it looks as though there might have 
been rudimentary teeth earler in life. 
The anterior alveolus is the largest, is nearly circular, and appears to have 
held a canine tooth. It extends backward and outward toward the orbit. Its posi- 
tion is indicated by a curved ridge on the maxillary. The second and third alveoli 
are nearly equal in size; but the fourth, fifth, and sixth diminish in size posteriorly, 
the last containing a minute tooth. The second, third, and fourth alveoli appear to 
be antero-internally and postero-externally oblique ; and it appears on the outside of 
the maxillary that the roots of the second and third extend obliquely backward in 
the same direction as the supposed canine. 
The last two teeth—one on each side—are the only ones preserved. They are 
small, simple, and cylindrical, with only a small blunt point projecting a trifle below 
the border of the alveolus and the palate. They appear to be covered with enamel 
as they are black and shiny. The lower surface of one is convex and roughened, 
with shallow pits and ridges, but I cannot make out any definite pattern. The other 
tooth is slightly worn or polished on the edge. 
THE SKULL. 
The bones of the skull are so thoroughly cemented together that it is difficult or 
impossible to make out many of the sutures. The muzzle is low and short, and at 
the canine alveolus twice as wide as high. ‘The portion occupied by the nasals is 
convex. A curved convexity extends backward from the alveolus of the canine to 
near the orbits. If the portions anterior to the supposed canine are premaxillaries, 
then these bones unite below forming the anterior portion of the palate. The 
processes are separate above and diverge ; but anteriorly there is a tendency, as in liv- 
ing Monotremes, to converge. Part of the anterior portions of the nasals are missing. 
The lines that appear to show the former position of the nasal and nasomaxillary 
sutures are fairly plain. The nasals are quite long and narrow, and are uniform in 
width as far as shown. The anterior border of the palate is slightly thickened, and 
an obscure lobing, with a suggestion of foramina, may indicate the former presence 
of rudimentary or deciduous incisors. The top of the skull is broad and nearly flat, 
yet somewhat convex antero-posteriorly and transversely. The most prominent 
portion (the greatest convexity) is near the middle of the upper surface of the 
cranium a little farther back than the orbits. The supra-temporal ridges are 
represented by faint (yet quite readily traceable) lines extending from the anterior 
portion of the orbito-temporal fossa upward, backward, and toward the middle line 
of the skull, then turning outward, making a quite regular curve, and ending at the 
