Smithsonian Report, 1909.—MacCurdy. PLATE 13 
Fic. a. LOWER JAW OF HOMO HEIDELBERGENSIS. ABOUT #. 
Fic. b. LOWER JAW OF HOMO HEIDELBERGENSIS. AFTER SCHOETENSACK, DER 
UNTERKIEFER DES HOMO HEIDELBERGENSIS, LEIPZIG, 1908. 
