194 Annals of the Carnegie Museum. 



so that the distal end extends very slightly beyond the lateral borders 

 of the shaft. The carinae, especially of the lateral metatarsals, are 

 better developed than in Merycoidodon, but, as in the latter, are not 

 carried up upon the anterior face of the trochlea. Mt. IV is a little 

 longer than Mt. Ill, though the two differ but slightly in this as 

 well as other respects. The proximal articulation is large and takes 

 up nearly the entire distal surface of the cuboid. Antero-posteriorly 

 the bone has a greater diameter than Mt. Ill, which is due to the 

 prominent ridge from the base of the large palmar process extending 

 obliquely downward and outward across the posterior face. On the 

 external proximal angle is the rather small articular facet for Mt. V. 

 The latter is the shortest of the series. The bone is quite heavy with 

 a less arched shaft than Mt. II, and a simpler proximal articulation 

 than the latter, but the distal carina is developed fully as well. In 

 the paratype the bone is diseased on the proximal half of the shaft. 



The Phalanges (Plate XXXIX, figs, i and 2). — The phalanges of 

 the pes are relatively slightly longer and not so broad as those of the 

 manus; otherwise they differ in no important respect. 



No. 1080 

 Measurements. (Type) No. 1081, 



Mm. Mm. 



Pelvis, greatest antero-posterior diameter 355 360 



Pelvis, from point of ilium to middle of acetabulum 200 200 



Pelvis, from middle of acetabulum to end of ischium 170 160 



Pelvis, vertical diameter of ischium posteriorly, median 



line-measurement 120 128 



Pelvis, greatest transverse diameter from point to point of 



ilia when in position, approximately 308 300 



Pelvis, transverse diameter of pelvic cavity opposite the 



acetabula no 90 



Pelvis, transverse diameter of pelvic cavity opposite the 



ischial tuberosity 114 95 



Femur, greatest length 260 275 



Femur, antero-posterior diameter of head 38 38 



Femur, transverse diameter of condyles 67 68 



Femur, transverse diameter of rotular trochlea 34 



Tibia, greatest length 205 225 



Tibia, transverse diameter of head 65 71 



Tibia, antero-posterior diameter of head 58 56 



Tibia, transverse diameter of distal end with fibula in 



position 55 55 



Tibia, antero-posterior diameter of distal end, internally. . ? 39 39 



Calcaneum, greatest length 90 92 



Calcaneum, antero-posterior diameter at sustentacular 



facet ? 40 40 



