ind 
1888,] ras) 
[Cope. 
pattern through wear. That of the third is but little larger than that of 
the second. Its posterior border is obliquely convex, being most promi- 
{ nent at the internal side. It has two cross-rows of cusps and a heel, the 
i latter with an internal cusplet. The intermediate tubercles are distinct, 
and there is one in the valley between the two rows. This tooth has only 
a trace of an external cingulum, and no internal one. 
Measurements. M. 
Length from premaxillary bone to foramen magnum 
inclusive......- 270 
° o ‘* nostorbital process... .228 
. = ‘«  preorbital porder .. .185 
o ' * «« infraorbital foramen .105 
oe ce “e ce 
superior canine.... .040 
& ue 3 «« posterior nares..... .17¢ 
fe OL -OUG DUA. soi aie Foes wie Shee Cee eet vated es 0210 
Width eee SPE S2 MAG a eae 016 
«at zygoma at auditory meatus .....-. oN A098 
ee! ee es: front Of OPI. sen as « Peat als 
“of brain case (greatest) ........eereecee seeeee + 026 
«« at postorbital processes .......+--- Hees a8 083 
“© ‘between orbits (least) ..... cece cece reece erence 078 
>) at factaliconstrittion. soviet ec. eee ee OE 
| «© egnine alveoli (external). ...... Vas 009 
ie ae co 60 (ON PAlatOs ce vsissee ee cee elee .036 
(© POLWEEH P.M. TG elie eee eek cee se dete cee 029 
" (SAIN OUT A Neve ee ee el ee see Widessane 4000 
‘of posterior nares ....seeee ee ee eee IR eu e011 
«* petween otic bulle ..........eeeeees Piel A016 
<€ of foramen MAGNUM. .eeeseee eee eeeee veneers .018 
Vertical diameter of cranium at last molar.....eeeeees O79 
ee e He ‘third premolar........ -048 
" e POPDIL ET hie Oe Pee TNs oes ow 00D 
ee ts “« zygoma at orbit .......-- edeeees e024 
Oy * c ‘© behind orbit ...0 6.0.5 Le (O16 
Length of superior dental series .....+eeeees-eeeeeees 152 
ee) tie emmolar So cue lawe eviews sa ees + (089 
eas eo Apne MoOlans. cieeeder sds. eer Ode 
§ anteroposterior sue ver eclee TOL) 
Diameters of p. m. i 
I U transverse. ..... Vea IS 
fanteroposterior ....++seseseeeees 018 
laransverse io set es de. esos Ce O14 
anteroposterior ...+++seceeeerees 018 
{YANGSVETSE ...ceeeececcesecceces 0125 
anteroposterior ......- «016 
CTANSVETSO «vs seese eee oe .OLOD 
From the John Day bed of Oregon, on Camp Creek. Discovered by 
Dr. J. L. Wortman. 
Diameters of m. i 
Diameters of m. iit { 
Diameters canine alveolus { 
