688 BIRDS 
Fic. 381.—Hesperornis.— After Marsh. 
ST., Sternum; CO., coracoid; CL., clavicle; ., rudimentary humerus 5 
SC., scapula; P., pectineal pubic process; /7Z., ilium; /S., ischium ; 
P.P., post-pubis; C.7., crest of tibia; /, fibula; 7.7., base of tibio- 
tarsus; 7.4/.7., tarso-metatarsus. 
