PETERSON : NEW SULLINE REMAINS FROM THE MIOCENE OF NEBRASKA 3138 
MEASUREMENTS. 
Length of skull from occiput to end of premaxillary bone.............-.2:-..:0ee-see sadacccno00 
‘« from occipital condyle to end of premaxillary bone, approximately... 
i ‘“ Jambdoidal crest to postorbital process on the frontal.............. css 
we ‘« postorbital process on the frontal to end of premaxillary................+/-.00+ Piles 9% 
Total length of alveolar border including premaxillary .........-..--02:.:+ssseeeees eee ceeee eee 156 “ 
Length of palate from posterior narial orifice to anterior end of premaxillaries ............ PI oS 
Mit ML Saag ‘« anterior border of posterior nares to the end of the premaxillaries.. 160 ** 
Greatest transverse diameter of occiput at lambdoidal crest. .......-...-..2+-seeseeeeeeee eee eeeees 44“ 
a tt O06 GP DYETIINETED coca nb0a65000 eooHoAeabeb on00B5000 aho00ab0EGaGdaCoDDGSNODDOD Age 
WY a ‘¢ of frontals at postorbital processes... .............:..seeeeseeeeeees Coan 
yy ot ‘¢ of muzzle at lachrymal bone 85 
ie re BG= | SEG. CIEII@s 1100741 noobasudosearonaunbes sedemigessahonnioceeneadece scebestce Sie 
e a ‘¢ of one condyle...............+ Lee aa aida Stas Sa beanie ee acl e te Dias 
Greatest diameter of cranium at tympanic region...............cc0e6 cecee scene eee eneeeneeeesenens 69 * 
Transverse diameter at glenOid Caviby............6..seecnceesees coeccaeecenseeeersecneceersceteecenceeers tig) 98 
se ef of palate at m’... op) 
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He os OB = GU" OO SITET hi negocu doouachevdasoce nadécouasedes 7oDsandcoseoooomeNcansendtion ef 
Greatest length of mandible, approximately 
Length of mandible from incisor alveolar border to base of coronoid process back of m,.. 148 
ILGHERHN Ge Gh NUS Elscodcocensceds6ces ocsacane9dbe boap0b sebon=0N8 o8ADs. Ooadbeoos céuDKE obtlooatnSaon uceceoHODODE og} 
IDEN Ot TELUS THA JERS. O81 copes oaccocosascoons sande ascabocoEsdoDDGGdnovSomeboGADbonUOOHoDDY GGen600ed 25 aaa 
OG.) GG) BE ToEKds: @it-T1>: ccosoonnaceiooesabacGbosese ceanquenoecdacosdbe suddbedbdsaencénndos chodadon tds eda6e 45‘ 
SUPERIOR DENTITION. 
Puatrs XXXIV.-XXXV. 
Unfortunately the incisors, canines, and premolars one and two are lacking in 
the type. The alveoli are all preserved and indicate a large pair of median and 
smaller lateral incisors; a heavy canine with the antero-posterior diameter greater 
than the transverse, the alveoli being oval in outline. ‘The alveolus for p? is 
suboyate, with the greatest diameter antero-posteriorly ; it is close to the canine 
alveolus and on a line with the internal border of that tooth. P* was undoubt- 
edly single-rooted. P? is separated from p* by a diastema of 5 mm. and has 
two roots as is indicated by the double alveolus. It had very nearly the same 
antero-posterior diameter as p®. The latter tooth is firmly implanted in the maxil- 
lary by three roots. The antero-posterior diameter is a little greater than the trans- 
verse and the tooth has an oblique position. It is sub-triangular in outline with the 
apex antero-internal. The protocone is prominent and the posterior cingulum is 
modified into a broad ledge with the greatest diameter postero-internal. The tooth 
