448 THE WASATCH FAUNA. 



unlike that of any Perissodactyle, but the head is more like that of Hi/ra- 



cofherium veuticolum than any other member of that order accessible to me. 



The coracoid is less incurved in ILjrachyus agrestis, and is entirely flat in 



Tapirus terrestris. 



Measurements of scapula. j^ 



Length measured along spine 179 



Width, .030'" from proximal end of spine 077 



Semi-diameters of glenoid cavltvj''"t'^^''P°^"""'"" 036 



( transverse 0i9 



AVidth of neck 036 



Length of coracoid from internal base 008 



The sternum is represented by six segments witli a possible seventh 

 concealed by the fore-arm which lies across it. Its characters are unlike 

 those of the Perissodactyla, and resemble rather those of some of the Coni- 

 vora. It has some resemblance also to that of Hyrax. The presternum is 

 much compressed, and two-fifths of its length projects in front of the facets 

 for the first rib, as a compressed prow. The compression is less marked at 

 the posterior extremity. The second segment is in section a vertical paral- 

 lelogram. The fourth segment is an oblong flattened plate, and tlie fifth is 

 a nearly square flattened plate with the angles truncated. The sixth is 

 wider than long, with the posterior angles much more broadly truncate than 

 the anterior, and the posterior border excavated. The seventh is much 

 narrower than the sixth, and is flat below. Its distal extremity is lost. It is 

 probably the xiphisternum, so that the number of segments is the same as in 

 Hyrax and the Ituminantia, and one more than Tapirus and the hogs. It 

 dift'ers from that of Hyrax in the ossification of the presternum, and the 

 greater width of the mesosternal segments. The latter are therefore of a 

 totally dift'erent form from the corresponding segments in Perissodactyla, in- 

 cluding Jlyrachyus, but similar segments are seen in Coryphodoii. 



Measurements of sternum. 



Length of presternum 085 



Width at rib-facet 026 



Unteriorl^-'"^''^"' 018 



Diameters second segments (transverse 016 



( anteroposterior O.l'j 



Length fourth segment 0-.J9 



Width fourth segment behind 031 



r.. . ^ri .< transverse (least) 03"2 



Diametera fiflli »i-giiient ' ^ ' 



( anteroposterior 026 



,,. . ■ ., .,< transverse (least) 026 



Diameters sucth segment : ^ ' 



( anteroposterior 020 



Width of second segment medially 014 



