GORILLA 219 



The type skull of this form is broader and shorter than G. 

 BERiNGERi with a Smaller braincase, but much broader face and shorter 

 rostrum ; the flat expansions at sides and back of braincase are very 

 wide and the posterior outline is rounded, curving inward in center; 

 two broad ridges from outer edge of orbits meet at about fronto- 

 parietal suture and may develop into a sagittal crest, but this is broken 

 away ; palate much shorter and narrower than G. beringeri and teeth 

 smaller. Since the description of the skull was published, Hon. Walter 

 Rothschild received a skin of this form, of which the following is a 

 description : 



Color. Head black, forehead with a few brown hairs; arms and 

 shoulders black ; back, chest, nape, belly and legs below knees in front 

 black ; beard on chin and on sides of face long, black ; middle of back 

 grayish white; lower part of back, rump and outer sides of thighs 

 iron gray grading into black towards ankles ; hands and feet black ; 

 inner side of legs black ; top of head black speckled with red. 



Measurements. Total length, 320 ; occipito-nasal length, 266 ; 

 Hensel, 185; zygomatic width, 178; intertemporal width, 7S; extreme 

 width of orbits, 1 14 ; height of orbit, 43 ; width of orbit, 45 ; median 

 length of nasals, 41 ; width of rostrum at canines, 64 ; length of braincase 

 from orbital ridge to occiput, 180; greatest breadth of braincase, 104; 

 palatal length, 102 ; postpalatal length, 185 ; width of palate at pm^. i7 ; 

 length of upper molar series, 59; length of m^. 13; width of m^. 13. 

 Ex type Berlin Museum. 



Gorilla gorilla jacobi (Matschie). 



Gorilla jacobi Matsch., Sitzungsb. Gesell. Naturf. Freunde, Berlin, 

 1905, p. 279; Rothsch., Proc. Zool. Soc. Lond., 1906, p. 465. 



Type locality. Lobo-Mundung, South Cameroon, West Africa. 

 Type in Berlin Museum. 



A very large, long and comparatively narrow skull, with large 

 crest and wide lateral expansions around the braincase; face very 

 broad with low straight brow ; rostrum short, narrow ; the orbital 

 ridges being about on a line with the braincase; crest beginning on 

 posterior portion of frontal and extending to occiput where it meets 

 the lateral expansions and causes the occipital outline to terminate 

 in a point ; zygomatic arch broad and heavy ; palate broad and rounded. 

 This is a massive low-browed, wide, but short-faced skull with a high 

 crest and broad lateral expansion around braincase, with occipital 

 outline pointed. The short, rather narrow rostrum is characteristic 

 of this form. 



