70 MESSES. HANCOCK AND ATTHEY ON 



nasal orifice is distinctly perceptible in two of the specimens ; it 

 is circular, and about Jth of an inch diameter. The two must be 

 placed considerably apart from each other, and not much in ad- 

 vance of the posterior margin of the nasal bone ; at least it is 

 only a short way in front of the posterior mucus-groove. 



There are five or six conical teeth in each premaxillary ; they 

 are stout, grooved, and circular at the base, with the crown com- 

 pressed in the direction of the length of the jaw ; they are pro- 

 vided with vsdde cutting edges, and are rather abruptly pointed. 

 The largest are upwards of half-an-inch in length, allowing for 

 their lost apices. The three anterior are much larger than the 

 rest, and they are placed at some little distance apart, there 

 being large depressions between them in the alveolar groove, ap- 

 parently for the reception of the crowns of the mandibular teeth. 

 The two or three posterior teeth are comparatively small, and 

 are placed nearer together than the anterior. 



Two specimens of the anterior portion of the left mandible 

 have also occurred, the largest and best preserved of which is 

 four inches long, and about 2^ inches wide. The surface ex- 

 hibits the same ornamentation as the other bones. The sym- 

 physial surface is perfect ; it is considerably longer than the 

 width of the ramus, being extended by a process from the inner 

 or lower margin of the bone ; there is a trace of a mucus-groove 

 along the inferior border of the ramus. None of the teeth in 

 these specimens are perfect ; but enough is left to show that they 

 are similar to those already described. The first tooth is small, 

 and is placed close to the symphsis ; the second is very large, 

 and is immediately behind the first ; it is half-an-inch in diame- 

 ter at the base ; a large depression f ths of an inch vsdde, succeeds 

 this, and then four small teeth placed close together, the two pos- 

 terior of which are larger than the anterior pair, but one of them 

 is indicated only by a mere fragment of dentine ; then comes 

 another large depression, half-an-inch wide ; but whether or not 

 this is for the reception of the crown of a maxillary tooth, or is 

 the impression of the base of a tooth belonging to the mandible, 

 it is difficult to say. Close to this depression is the base of ano- 

 ther tooth equal in size to the large anterior one. At this point 



