XXXVII 
ON THE ANGWANTIBO (ARCTOCEBUS CALABARENSIS, 
GRAY) OF OLD CALABAR. 
Proceedings of the Zoological Society o7 London, 1864, Pp. 314-335. 
(PLATE XXVIII. [PLATE 20].) 
ON the 25th of April, 1860, Dr. John Alexander Smith read before 
the Royal Physical Society of Edinburgh a “Notice of the ‘ Ang- 
wantibo’ of Old Calabar, Africa—an animal belonging to the family 
Lemurina, and apparently to the genus Perodicticus of Bennett.” 
The specimen from which this notice was drawn up was sent home 
by the Rev, Alexander Robb, who, in a letter dated July 28th, 1860, 
which is quoted by Dr. Smith, says, “Another specimen which I 
procured I handed to Mr. Thomson, who, I believe, sent it to Mr. 
Murray.” 
This specimen my friend Mr. Murray was kind enough to transmit 
to me for examination, some two years ago; but I have unfor- 
tunately been prevented by the pressure of other occupations from 
undertaking the investigation until now. 
The most important passages in Dr. Smith’s description of his 
specimen, which, like mine, is of the male sex, are the following :— 
“The Angwantibo is covered with a thick and long wool-like 
hair, which becomes short and thin on the face and on the extremi- 
ties, the inner sides of the fore and hind hands being free from hair. 
The hair is of a dark grey colour at the base, and the upper third, or 
so, of its length is of a light brown or fawn-colour, the terminal points 
being of a darker brown; this is the general character of the fur of 
the upper parts of the body and limbs. The face in front of the 
eyes is rather darker in colour ; but the sides of the head are lighter, 
and the chin and throat are nearly white. The inner surface of the 
