A MK.MOIK ri’ON THE GENUS 
inular,. Imv.- iiin.-l. and less specialized crowns than in Telmatotheriim. 
'Fids applies rs|H-.-ially to the \'’s, where crests are less developed than in the former 
>r.-iiiis. 'I'll.- last iidVrior molar is short, broad and its tubercle may be highly 
f>|M‘4-iali/e«l. 
'I'll.* skull may under>ro various moditicatioiis as to form in this genus. It is 
griiendh much eloiipitml, with the facial portion short and the zygomatic fossa 
cloiipitisl, thus hriugiiig tjie orhit well forward over the molars. The premaxillaries 
an- highly «-hani<-teristie, Is-iug short, coinpres.sed and with a small round median 
sMiiphvsis. The ua.snis aiv shorter and broader than in Limnohyops, but not so 
Mnaigl\' an-he«l lat«-rall\- as iu Telmatotheriiitu. The occipital crests are well de- 
velo|M-«l and the zygomatic arches may undergo considerable variation as to develop- 
ment. Till- auditory pna-e.^^es are distinct, the post-glenoid Ixdng generally 
(-loiigaUti. The jaw symphysis is short and not horizontally placed. The inferior 
Imnler of the jaw is stnuigly iueurved. 
The liraiii is of a low type, with the subdivisions well separated. The 
rrn-l»niiu is small, hut convoluted. The mid-brain was probably partially ex- 
|s*Msl. 'rill- ecn-lM-lluiu is very broad transver.sely, being as broad as the hemis- 
phen-s. 'I’lie olfa<-tory 1oIh-s weiv very large and extended considerably in front 
of the c«-n-l»rum. 'flu* characters of the axial skeleton re.semble closelv those of 
tin- Tapir, although the zyga|M)physes (»f the posterior dor.sal region are involute in 
fonii. 'I'he iiiaiius is short and hn)a<l. The distal facets of the lunar are subequal. 
Tin- magnum is broad and not high. The metapodials are short and broad. In the 
tarsus the astragaliM-ah-aueum fa<-ets are generally widely separated, but consider- 
able variation may Is- pres«-ut iu this re.sjx*ct. There is a large astragalar cuboid con- 
tact. I In- contact l)etw«H-u the culsad and metatar.sal III i.s, as a rule, wanting. 
I he |M-lvis was short and broad. The ilia^ were not subdivided, being Eh ino- 
•H-nitie ill fonii. 
svNofsis OF TiiK .si-kcif:s of the genus paueosyofs. 
A. 
Am-eiidiiig ramus of mandible short. 
1. Na.sals not expanded distally. 
a. !siz«* largi*. 
liilerior molars stout and broad, posterior tubercle a cone. P. paludosiis. 
Interior molai-s high and long, posterior tubercle a cone. F. vallidens. 
b. Siz** iiieilium. 
Su|H-rior pn-molar 2 with one external lobe 
Su|H-rior pn-molar 2 with two external lobes 
c. .<ize small. 
Su|H-rior pn-molar 4 with a protoconule 
Na.sals expanded distally. 
n. Size medium 
P. laevidens. 
P. minor. 
P. borealis. 
. P. megarhinus. 
