172 Proceedings of the Royal Physical Society. 
described by Professor Owen in his " Memoirs on the Di- 
nornis."*' The small oval bone found along with the other 
bones is evidently a tracheal ring ; it measures x^ths of an 
inch in length, by x^oths of an inch in breadth, and is about 
rVth of an inch in depth. 
A portion of a vertebra, which has been deprived of its 
calcareous matter by dilute acid, would seem to prove, by the 
large amount of residual organic matter, that these fossil bones 
are probably of recent origin. 
It is to be hoped that this interesting collection will ulti- 
mately assist in the construction of one of the species of Pa- 
lapteryx, indicated by Professor Owen from the examination 
of detached crania, or founded upon the proportions and ana- 
tomical differences of other separate parts, or single bones of 
the skeleton. 
III. Notice of the " Angwantibo" of Old Calabar, Africa; an Animal 
belonging to the Family Lemurina ; and apparently to the Genus 
Perodicticus, of Bennett. By John Alexander Smith, M.D. 
The interesting little animal (now exhibited) was given 
to me by Mr William Oliphant, who received it some time ago 
from the Eev. Alexander E-obb, one of the U. P. missionaries 
at Old Calabar. The following extract from a letter, dated 
Old Calabar, 1st December 1859, gives some details concern- 
ing it: — "I was at Creek Town yesterday, and received from 
'King Eyo Honesty' a small bush animal ; or, as the Krumen 
call it, ' bush meat,' which I brought with me to give to Mr 
Thomson, who is with us for a day or two, as he takes a great 
interest in these matters. He, however, advised me to bottle 
the animal, and send it to you myself ; which, therefore, I now 
do with pleasure. We have put it up so that it ought to reach 
you in safety. It is in a stoppered bottle, well sealed, and 
the bottle is put up in a small tin box wrapped up in our 
native grass cloth. It seems to be a lori, or Sienops tardi- 
gradus. The Calabar people call it Angwdntibo {Angwdn 
means a farm), but we do not know the etymology of the second 
* This bone was afterwards compared with the skeletons of Apteryx and 
liinornifi in the British Museum, and found to be a left fibula. 
