AND AFFINITIES OF THE GORILLA. 283 



Fig. 2. Ibid. Palm of the fore hand. 

 Fig. 3. Ibid. Back of the fore hand. 

 Fig. 4. Ibid. Palm or sole of the hind hand. 

 Fig. 5. Ibid. Back of the hind hand. 



Fig. 6. The pinna, auricle or external ear, of a young male Gorilla, photographed on a 

 larger scale. 



h. Helix. 



a. Anthelix. 



s. Scaphoid fossa, or fossa of the helix. 



/. Fossa of the anthelix. 



c. Concha, partially divided by h, the commencement of the helix. 



t. Tragus. 



r. Antitragus. 



i. Incisura intertragica. 



/. Lobulus. • 



Fig. 7. The nose and part of the upper lip of the same animal, photographed on the 

 same scale. 

 (For these photographs I am indebted to ]\Ir. Moore, the able Curator of the 



Derby Museum.) 



PLATE XLVIII. 



Fig. 1. Upper view of the cast of the cranial cavity, representing the brain of a full- 

 grown male Gorilla. 

 Fig. 2. Side view of the same cast, 

 c. Cerebrum. 

 6. Cerebellum. 

 Fig. 3. Dissection of the brain of a young male Gorilla, showing the beginning of the 

 posterior cornu and pes hippocampi minor. 



a. Corpus striatum. 



b. Taenia hippocampi. 



c. Hippocampus major. 



e. Posterior cornu with beginning of pes hippocampi minor. 

 (The diagram of this dissection, used in my Fullerian Course of Lectures at the 

 Royal Institution, February 1861, was copied in the Report of the Lecture in 

 the 'Athenaeum,' March 23, 1861.) 



PLATE XLIX. 

 Outlines of skull of a young Chimpanzee (sex unknown), and of a young male Gorilla, 

 with deciduous dentition, answering to the human phase of the third year : 

 three-fourths the natural size. 



VOL V. PART IV. 2 p 



