WHOLE VOL. SKELETAL REMAINS OF EARLY MAN — HRDLICKA 169 



THE GIBRALTAR SKULL 

 Measurements on the Original — Continued 



Upper alveolar arch: 



Median length to line of 

 rearmost points of 3rd 



molars 



to posterior limits of arch 



Breadth max., external. . 



Index 



Thickness of right parietal, 

 along a line i cm. above 

 squamous suture 



Broca 



5 4 



71 



Sollas 



near 6. 7 



70 



95 7 



Sera 



Keith 



Urdlidka 



near 6. 7 

 7.0 

 95 7 



6-9 mm. 



' Taken on the reconstructed skull (original) ; the reconstruction is so good that there can be 

 but little error; though it is possible that the original may have been a trace narrower. 



2 Evidently an error; his figures (p. 322) give 75.S. , ■ , , , r j 



'These measurements could not have been taken from the standard landmark of dacryon; 

 they doubtless are measurements of the contour of the orbits. u- ■ .1, 



* These are reversed and one author had apparently copied the other; the right orbit is the 

 higher. 



ENDOCRANIAL MEASUREMENTS cm. 



Whole Cavity: Greatest length of brain (left hemisphere) 16.4 



Maximum length, right side, measured 16.2 



Maximum breadth, estimated 12-8 



Cerebral index, close to 7P0 



Anterior or frontal fossa (all fossae right side): Length^ 5.2 



Middle or temporal fossa 5-0 



Postero-superior or occipital cerebral fossa 7-6 



Postero-inferior or cerebellar fossa 5-7 



Comparisons 



(Right Side) 



Anterior fossa: Length 



Percental relation to max. 



endocranial length 



Percental relation to total length of 



fossae 



Middle fossa: Length 



Percental relation to max. 



endocranial length 



Percental relation to total length of 



fossae 



Posterior cerebral fossa: Length 



Percental relation to max. 



endocranial length 



Percental relation to total length of 



fossae 



Cerebellar fossa: Length 



Mesoce- 

 phalic 

 U. S. 



Whites 

 Male 



5.22 



29 5 



27.9 

 5 ■ 53 



32.2 



29 5 



7.96 



46.0 

 42.6 



6.26 



6 



Mesoce- 



phalic 



U. S. 



Whites 



Female 



5 05 

 30 4 



28.2 

 527 



33 o 



29.4 

 758 



46.8 



42.4 

 6.16 



Gibraltar 

 Skull 



Anthropoid 



Apes 

 (Chimpan- 

 zees, Orangs 

 and Gibbons) 



5.20 

 32.1 



29 .2 

 50 



30 9 



28.2 

 7.60 



46.9 

 42.7 



5-7 



34 



33 



42 



4-37 5 



-35 3 



5-48 5 



' For methods and comparative data see Hrdliika. A. 

 Proc. U. S. Nat. Mus., Vol. 32. PP. 177-232. 1907. 



MeasureinenU of the Cranial Fossae. 



