130 MEMOIRS OF THE CARNEGIE MUSEUM 
equal transversely and antero-posteriorly, like what may be observed in Sus and 
the peccaries. Unfortunately no complete femur of Bodchwrus hwmerosus has been 
as yet discovered and we are therefore unable to compare it with the correspond- 
ing bone of earlier and later forms. 
MEASUREMENTS OF FEMUR. 
Mm 
Gieatestslougtheswatasvtess Stoves iesdasensie a doelehoteecane cies la sivngdscavses 470 
cs transverse diameter of proximal end, approximately.................. 155 
Antero-posterior diameter Of Head..)...50...5..6..0sscdescsnscsenscvessccesesnenseoeseoes 
Transverse ie Urea So rae tL aCTe Sacra TECACD OT ECU oS 
Greatest antero-posterior diameter of distal end, approximately.... 
ee transverse ae rir ES Rane uma Riea aie tamer matate ds 3 
: : LEAMSVELSO Eau he diy cia monaealnctent faa tatiels 53 
Diameter of shaft at middle..... ; 
AMUOLO=POSLOLION sre roev essen: cb cavetscweiun sy duets 56 
Patella. —The patella which was found with the type and undoubtedly belongs 
to the same individual, is quite different from those found with the Princeton speci- 
men. The diameters are relatively smaller in the vertical and antero-posterior direc- 
tions, while transversely they are greater than in Archwxotheriwm. The general out- 
line of the bone is sub-oval, with a short, blunt process below and an angle greater in- 
ternally than externally. It is evenly convex in front. The articular facet for the 
rotular trochlea of the femur is evenly rounded without a separating ridge, which 
agrees perfectly with the condition of the groove of the femur. The patella of Di- 
nohyus is further characterized by having a considerable rugose area on the postero- 
internal angle which is separated from the main articulation by a very narrow, 
Fia. 76. Lateral, Posterior, and Anterior Views of Patella of Typeof D. hollandi Peterson. } nat. size. 
but well marked groove. In Archwotheriwm instead of this rugose area there is a 
small recurved tubercle, which adds to the transverse diameter of the femoral articu- 
lation of the patella. The patella of Bodchwrus hwmerosus is relatively larger than that 
of Dinohyus hollandi and in this respect more nearly resembles that of Archxotheriwm 
ingens; the general shape is also more nearly like that in the latter genus, though 
there are some differences, for instance in Bodchwrus the patella is more massive, 
with a rapid contraction in the lower portion to form a process distally, while in A. 
ingens the patella is of the greatest antero-posterior diameter proximally and grad- 
ually diminishes to a transversely broad and antero-posteriorly compressed process. 
