606 THE PUEECO FAUNA. 



transverse-liue dividing the crown, eqaially. There are anterior aud poste- 

 rior basal cingula which do not meet at the internal extremity of the crown 

 (this portion is damaged on the second molar), and which disappear at the 

 line of the apices of the external Vs. There is a weak cingulum at the 

 external base of the external Vs. The enamel is delicately wrinkled, or 

 smooth where subject to attrition. The alveoli of the cai)ine and third supe- 

 rior incisor show that they are large teeth. 



Of inferior teeth only parts of the crowns of the M. i and M. iii are 

 preserved. The limbs of the anterior Vs ai'e elevated and sharp-edged, 

 and the posterior terminates in something like a cusp internally. The third 

 true molar has a well-developed median angle on its external side. The 

 heel is long. The inferior canine alveoli indicate flattened roots and a 

 crown directed upwards. The incisive alveoli form with the canines a con- 

 tinuous series, and the median is a little larger than the first and third. 



Crowns lost. 



Measurements of skull. 



M. 



Leugtb from supraoccipital crest to posterior end of nasal bones 0. 1035 



Length of sagittal crest 08T 



W'idth between superior edges of squamosals 025 



Anteroposterior extent of glenoid surface 017 



Anteroposterior extent of meatus auditorius 010 



Length of cavity containing cerebrum and cerebellum 050 



Long diameter of occipital condyle 018 



"Width of both nasal bones at middle 0185 



Length of facial process of premaxillary anteroposteriorly 01.') 



Llevatiou of orbit above molar teeth 019 



Production of angle of mandible beyond posterior base of condyle 014 



Depth of jiroduced portion of angle 027 



Length from angle to anterior border of masseteric fossa 050 



Depth of ramus at posterior edge of last molar 0285 



Depth at lirst true molar 0275 



Thickness of ramus below first molar 0115 



"Width of symphysis above between the canines 018 



Length of superior true molars 0285 



Diameters M.i^''°**''<'P°^t''"°'^ *^11 



( transverse 017 



Diameters M. n ^ anteroposterior Oil 



( transverse 017 



Tr.-knsverse diameter of M. iii 0165 



Length of inferior true molars on base 032 



Diameters M.i^^°*''''''P°«*^'''°'' "l^S 



( transverse 008 



D.ameter8o/5a«eofM. iii^'*°*^^''Po«*«^"°^ ^^* 



( transverse 007 



Anteroposterior diameter of superior canine alveolus, not less than 013 



