PLATES. XV 
XLII. Objects of jade from Costa Rica. 
XLIV. Objects of jade from Costa Rica. 
XLV. Objects of jade from Costa Rica. 
XLVI. Objects of jade from Mexico. 
XLVII. Diagram of excavations in Burial Gound at Las Guacas. 
MEMOIR NO. 2 
XLVIII. Superior, lateral, and palatal views of skull of M. elatus. 
XLIX. Palatal view of skull of Moropus elatus Marsh. 
L. Lateral and superior views of skull of M. elatus. 
LI. Lateral and inferior views of M. petersoni, juv., showing milk dentition, and 
first and second permanent molars. 
LIT. Mandible of M. elatus. 
LIT. Left lateral view of skull of M. elatus as restored by W. J. Holland. 
LIV. Anterior view of first sacral vertebra of M. elatus. 
LY. Superior view of sacral vertebree of M. elatus. 
LVI. Inferior view of sacral vertebree of M. elatus. 
LVII. Lateral view of sacrum of M. elatus. 
LVIII. Lateral view of pelvis of M. elatus. 
LIX. Dorsal view of pelvic girdle of M. elatus. 
LX. Ventral view of pelvic girdle of M. elatus. 
LXJ. Anterior and posterior views of pelvic girdle of M. elatus. 
LXII. Ribs 1-5 of M. elatus, right side. 
LXIII. Ribs 6-10 of M. elatus, right side. 
LXIV. Ribs 11-15 of M. elatus, right side. 
LXV. Scapula of M. elatus Marsh. 
LXVI. Ulnar and anterior views of humerus of M. elatus.* 
LXVII. Anterior and ulnar views of the ulna-radius of M. elatus. 
LXVIII. Manus of M. elatus (ulnar and anterior views). 
LXIX. Radial and palmar views of manus of M. elatus. 
LXX. Fibular and anterior views of left femur of M. elatus. 
LXXI. Posterior, anterior, and lateral views of left patella; anterior and fibular 
views of left tibia and fibula of M. elatus. 
LXXII. External and anterior views of right pes of M. elatus. 
LXXIII. Mounted skeleton of M. elatus. (Viewed from the right side.) 
LXXIV. Mounted skeleton of M. elatus in the Carnegie Museum. (Viewed from the 
left side from behind.) 
LXXV. Mounted skeleton of M. elatus in the Carnegie Museum. (Viewed from the 
right side in front.) 
*N.B. The figuresin this plate have been placed upside down in printing. 
