45° 



RICHARD S. LULL 



are preserved. In general form they are quite rhinoceros-like, 

 being somewhat widely expanded in the shaft. The capitulum is 

 nearly spherical in most of the ribs preserved, and the two facets 

 are separated from each other by a deep groove. In an anterior 

 rib, the second or third, the tubercular facet, while mainly on the 

 posterior side, arches -over so as to lie in part on the anterior face. 

 The other ribs have the tubercular facet entirely on the posterior 

 face. The resemblances again are with the rhinoceros rather than 

 with Palaeosyops. 



THE APPENDICULAR SKELETON 



Fore-limb. — While both scapulae are incomplete, they supplement 

 each other so that our knowledge of them is fairly perfect. The 

 proximal half of the left with its spine is well preserved, while of the 

 right nearly the entire distal border is present. 



The glenoid is deeply concave antero-posteriorly, and is broadly 

 elliptical in outline. The corocoid process is conical, somewhat 

 downwardly curved at the tip, separated by a deep notch from the 

 glenoid border, and not arising directly from it, as in Palaeosyops, 

 but separated by an interval of o . 038 m. The spine is high in the 

 middle, with a broad roughened border. It lowers insensibly into 

 the general level of the scapular face above and below, with no 

 indication of an acromion. The tuberosity is not very pronounced, 

 and the distal border is nearly straight. 



The dimensions of the scapula are: 



Total length (estimated) - o . 690 



Width of superior border (estimated) - .405 



Fore and aft diameter of glenoid fossa - - - - .133 



Height of spine -------- .095 



The humerus. — The distal portions of both humeri are preserved, 

 but of the proximal portions that of the right only, and as there is a 

 portion of the shaft missing, the length cannot be measured. The 

 distal end is broad and heavy, the external condyle being especially 

 prominent and roughened for muscular attachment. The inner 

 trochlear is much the larger and is higher than the outer one, thus 

 indicating an outward flexing of the elbow joint. The aconeal fossa 

 is large and deep, but there is no foramen. The breadth of the 

 extremity measured at right angles to the axis of the shaft is o. 210. 



