144 THE HT7MAW SKULL, ETC. FKOM PILTDOWN. [ICarch I913, 



Plate XIX. 



Eoanthropus clawsoni, gen. et sp. nov. ; from a gravel near Piltdown Coinuion, 



Fletcbing (Sussex). 

 Fig. 1. Left frontal in outer side view ; (1 a) front view and (1 b) lower view of 

 the lateral portion. 



cer. = cerebral surface ; cor. = coronal suture ; e.a.p. = external 

 angular process; «i._/. = facette for malar; orb. = roo£ of orbit; 

 s.= broken section of frontal bone; s./.=facette for sphenoid; 

 £.=temporal ridge. 

 2. Left temporal, lacking the upper part of the squamous wing, in outer 

 view ; (2 a) lower view, (2 b) inner view, and (2 c) upper view. 



car. = openings of carotid canal, the lower blocked by a pebble; 

 e.a.m. = external auditory meatus, blocked bj r a pebble; gl. = glenoid 

 fossa; i.a.m. = internal auditory meatus; mtf^~.=process for malar; 

 mast. — mastoid process; 0./.= suture for occipital; p.a.p. = Y>ost- 

 articular process ; ^../*. = suture for parietal ; s.f. = suture for sphenoid ; 

 s?.:= broad groove for lateral sinus ; s^. = base of styloid process. 

 [All thejfigures are of the natural size.] 



Plate XX. 



Eoanthropus clawsoni, gen. et sp. nov.; from a gravel near Piltdown Common, 

 Fletcbing (Sussex). 



Fig. 1. Imperfect occipital in outer view; (la) inner view and (lb) broken 

 vertical section, left side. 



c6. = cerebellar fossa; cer. = cerebral fossa; c.o.c. = external occi- 

 pital crest ; e.o.p.— external occipital protuberance ; /.m«y.=foramen 

 magnum; i.o.c — internal occipital crest; fewa&.=portion of lamb- 

 doid suture; Z.c.J.=lower curved line; l.s. — lines, suprema ; si.= 

 groove for lateral sinus ; «.cX=upper curved line. 

 2. Right mandibular ramus, imperfect at the symphysis, in outer view; 

 (2 a) inner view, (2 b) lower view, and (2 c) upper view. 



6. = ridge below origin of buccinator muscle ; c^. = neck of condyle ; 

 co?\ = coronoid process; d. =inferior dental foramen; e\p£.=area of 

 insertion of internal pterygoid muscle; m. 1, m._2=first and second 

 molars ; m. 3 = socket for third molar ; m.g. = mylohyoid groove ; 

 ?rea. = area of insertion of masseter muscle ; s. ^incurved bony flange 

 of symphysis ; if.^area of insertion of temporal muscle. 

 [All the figures are of the natural size.] 



Plate XXI. 



Mammalian remains found with Eoanthropus clawsoni, in a gravel near 

 Piltdown Common, Fletcbing (Sussex). 



Fig. 1. Mastodon sp. : waterworn cusp of molar tooth, side view; (1 a) front 

 view and (1 b) back view. (See p. 139.) 



2. Stegodon sp. : hinder fragment of molar tooth, crown view; and (2a) 



vertical longitudinal section. (See p. 139.) 



3. Stegodon sp. : fragment of molar tooth worn by mastication, crown 



view ; and (3 a) vertical longitudinal section. (See p. 142.) 



4. Hippopotamus sp. : crown view of portion of lower molar tooth. (See 



p. 142.) 



5. Hippopotamus sp. : lower first premolar, outer view ; and (5 a) end view. 



6. Cervus elaphus Linn. : basal fragment of left antler, front view ; and 



(6 a) outer view, three-quarters of the natural size. (See p. 142.) 



7. Castor fiber : first or second right lower molar, crown view ; and (7 a) 



outer view. (See p. 143.) 



8. Castor fiber: right lower fourth premolar, crown view. 



[All the figures are of the natural size, except figs. 6 & 6«.] 



