i8o Lloyd's natural history. 



absent from the sku^l, for the muscular ridges remain some 

 distance apart ; the teeth are very large, especially the canines 

 and the middle upper incisors. The females, which are 

 smaller than the males, are also without the cheek-swellings and 

 the prominent crests of the male, and have smaller canine teeth. 

 This variety, named Simia mono by Sir R. Owen, bears a close 

 similarity to that found in Sumatra. It has been considered a 

 distinct species both by Owen and Wallace, but the variation, 

 as the latter naturalist himself admits, is so very great in just 

 those characters which have been considered to separate " Mias 

 Kassu" from *'Mias Pappan," that it is highly probable that both 

 are of the same species, but of different ages. Mr. Beddard 

 found that an Ape exhibited in the Zoological Gardens as an 

 adult example of S. morio was in reality immature. 



THE GORILLAS. GENUS GORILLA 

 Troglodytes, Geoffr., Ann. Mus., xix., p. 87 (181 2). 

 Gorilla, Is. Geoffr., C. R., xxxiv., p. 84, note (1852). 

 This genus, like the preceding, contains but a single species, 



THE GORILLA. GORILLA GORILLA. 



Troglodytes gorilla, Wyman, Bost. Journ. Nat. Hist. (2), v., p. 



419, pis. 1-4 (1847); Winwood-Reade, P. Z. S., 1863, p. 



1 7 1 j Owen, Tr. Z. S., ii., p. 381; v., pp. i, 243, pis. i.-xiii., 



and xliii.-xlix; Scl., P. Z. S., 1877, p. 303; Cunningham, 



Mem. Roy. Irish Ac, p. i (1886). 

 Gorilla gifia, Is. Geoffr., Arch. Mus., viii., pis. 2-4 -(1852). 

 Troglodytes savagely Owen, P. Z. S., 1848, p. 29. 

 Gorilla savagei, Is. Geoffr., Rev. et. Mag. de Zool., p. 104 



(1853); Gray, Cat. Monkeys Brit. Mus., p. 7 (1870). 

 Pithecus gorilla, Blainv., Osteogr,, pis. 2, et 5 bis (errore /*, 



gesilla). 



