KtTNQL. SV. VET. AKADEMEINS HANDLINQAR. BAND 58. N:0 2. 



The Mikeno Gorilla is thus somewhat smaller than Gorilla graueri Matscbie in 

 which the length of the skin of the old male type measured as above is 142 cm."^ 



Greatest length of skull 



Occipitonasal length 



Occipital crest to front of superciliary ridge 



Basal length 



Oondylobasal length 



Zygomatic breadth 



Least postorbital width 



Breadth of brain case 



Breadth of planum nuchale 



Height of planum nuchale from foramen magnum 



Breadth across middle of orbits 



Inner height of orbit 



I breadth of orbit 



Least interorbital width 



Median length of nasals 



Breadth across alveoles of canines 



Length of palate mesially 



Distance from palatal arch to foramen magnum 



» ». » » » occiput 



Breadth across p' 



» inside p^ 



» » m' 



Length of upper-molar series 



Breadth of m' 



Length of ot^ 



Breadth of m' 



Length of m' 



Breadth of m' 



Length of lower molar series 



Combined alveolar breadth of upper permanent 



incisors 



Thickness of arcua auperciliaria above middle of 



the orbit 



Length of condyli ocoipitales 



The measurement in the above table give many interesting hints about the ratio of 

 growth' of the Gorilla skulls. A comparison between the skulls n:o 164 (PI. II, figs 1 & 2, 

 PI. lil, fig. 1) and n:o 156(P1.I;II, fig. 2, PI. IV, fig. l)reveal analogous facts as the skins 

 of "the same specimens viz. that the characters of maturity are late in their appearance, 



1 Sitz.ber. Ues. Naturf. Freunde Berlin, 1914, p. 324. 

 ^ Or, if the incisors are included, 318 mm. 

 K. Sv. Yet. Akad. Handl. Baud 58. N:o 2. 



