PLATE LVII. 



the toes arc long, but tlie great toe is very short and set close to the 

 heel, and standing out in a right angle : it is destitute of a toe nail, 

 while all the other toes as well as fingers have oval nails of a black 

 colour that extend exactly to the ends of the fingers. The same 

 prominency of the abdomen was observable in the living animal in 

 France (in J808) as in the article above described. It has been 

 already seen that its dentation was not complete when it arrived in 

 England; it had then only ten teeth in each jaw. In the month of 

 December, 18 17, he cut two of his posterior grinders, making altoge- 

 ther twelve teeth in each jaw, which is four less in each than it possesses 

 at full maturity ; the Orang-Outang, when full grown, having 

 sixteen teeth in each jaw : namely, four in front, an incisive tooth 

 on each side of these, and five grinders behind on each side ; the 

 total complement in both jaws being thirty- two. 



* The teeth of the Orang-Outang are thus defined by Proffessor 

 Illiger " Denies omnes continui approxima,ti, primores utrinque 4 erecti, 

 incisores ; Laniarii promoribus vix longiores conici ; Molares obducti tri- 

 tores utrinque, utrinsecus 5, anteriores 2 bicuspidati ; posteriores 3 qoa- 

 dricuspidati." Illiger having divided the Simise of Linnaeus into no less 

 than thirteen genera, was constrained to be more explicitly minute in the 

 peculiar form of the teeth than is precisely requisite to determine the 

 Linnean genus. The genera of this author, as it may be conceived from 

 their greater amount, are proportionately limited in the number of species 

 contained in each. The only animals that bear the name of Simia in his 

 arrangement are the Orang-Outang. Mr. Abel does not mention the form 

 of the teeth in the description of his animal. To ascertain this with any 

 degree of accuracy in the living animal, would have been indeed difficult, 

 as we ourselves experienced, owing to the apprehensions of the poor 

 animal that some harm might be intended. We have subsequently exa- 

 mined them in the skeleton, and find the fore teeth, and canine teeth agree 

 with this definition ; but the grinders are only three in number instead of 

 five, the two anterior ones are bicuspidate, the posterior one tricuspidate. 

 It is very probable two other grinders would have appeared on each side 

 behind these if the animal had lived to a more advanced age. 



