A MK.MOJll UPON THE GENUS 
aii.i tl.r mH-iform in v.-rv larKt*. T\w tninsverso extent of the magnum is less, 
.• 4 .in|.arati\.-l\-, llnm in the Titayiolheriime. As a Avhole the carpus in Palceosyops is 
more eloiigaite, its transverse axis )x‘ing less in proportion to its vertical. This also 
ajiplies to the elements of the tarsus. 
Tarsus. — '1'Ih> tai-sns of Palceosyops is jn-oportionally higher and narrower 
tiiaii that of Titanotherium, al.so the metapodial region is much less spreading, 
'Fla* astragahM-alcaneal liu-ets aif ncjt as widely separated as in the Titano- 
Ihcriiiue ; ami. in fact, in some of the smaller species of Woi Palceosyopince 
teiitaeiilar ami iiiferi(*r may Ih‘ continuous. In Palceosyops the smstentaculum is 
verv largely develo|)«*d, wliei-eas in Titanotherium this facet is .small. The astra- 
pilixmls»id hu-*'t is much smaller than that of Titanotherium, and con.sequently the 
navicular is less nslneed tlnin in the latter genus. A small contfict takes place 
Ijetwixm the cnlMii«l and inetatansal III. The cuboid is rather narrow and high. 
.\ small lihnlcM-alcaneal facet is developed in Palceosyops, but there is no tibio-calca- 
neal conta<-t. 'I’he gap Is^tweeii the a.stragalus and calcaneum is very small in the 
Pahrosyopitue, and the astragalar ti*ochlea are deeper than in the Titanotheriince. 
sVXO|>SIS OF TIIK (iK.XKK.V OF THE PAL.EOSYOPIX.E. 
I. .Ml thns* inci.‘<ors pres<*nt in each jaw. 
.\. External hiU's of snp. molars very oblique and 
shallow. 
1. L.\MBr)OTnERIU.M. 
M. External IoIh*s of sup. molars straight and deep. 
a. premaxillary symphysis short and round, 
last snp. molar with two internal cones 
last Slip, molar with one internal cone 
2. Limnoiiyops. 
3. Palaiosyops. 
h. premaxillary .symphysis elongate and 
narrow 
4 . Tp:iAr ATOTIIERIU.M . 
0. HaPLAC0D0X.(3) 
Ml. Only two ineism-s pi-es<*nt in each jaw . 
The aliove analytical table of the genera of the Palceosyopince differs radically 
fnaii the hist table of the propo.sed by Professor Cope'; of course this 
.hflereiiee is due to the di.s<-overy of the i«xsition of Chalicoiherium. 
