SIMIA SYNDACTYLA. 
Ord, IV* Quadrumanes, Cuvier. V* Famille, les Singes. 
Ord. I. Primates, Linn. Syst. 
Ord. IE Pollicata, IUiger. Fam. 1, Quadruraana. 
SIMIA, Linn. Briss. Schreb. Cuvier. 
Hylobates, Uliger, 
Pit hecus, Geoffroy-Saint-Hdah r 
Simla aterrima, collo pectoreque nudis, in dice et digito medio podariorum coadunatis. 
Siamang t of the Malays. 
Simia syndactyla, Sir T. S. Raffleis Cat of a ZooL Coll made in Sumatra, Tr. Linn. 
Soc. XIII. p. 241, 1821. 
TO the following description of the Simia syndactyla it may be proper to 
premise, that the generic name is employed, by Sik Stamford Raffles, according to 
the classification of Linnaeus. M. Cuvier, in preserving in the order of Quadrumanes 
the two Genera of Simia and Lemur, has found it necessary to divide each into several 
Sub-genera ; and the celebrated Illigcr, in Ms Prodromus Systematis Mammalium. 
et Avium, has established among those Quadrumana, which, according to his views, 
agree in generic characters with the Simia Lar, a distinct genus, denominated 
Hylobates: this is arranged immediately after the genus Simia, and is distinguished 
principally by the proportionally greater length of the anterior extremities, which, 
when the animal stands erect, reach to the ground, by the naked callosities on the 
buttocks, by a comparatively short muzzle, and a facial angle of sixty degrees. 
Agreeably to the Tableau des Quadrumanes of M. Geofiroy-Saint-Hilaire, contained 
in the XIX* Volume of the Annales du Museum, the Simia syndactyla belongs 
to the genus Pithecus. 
The Simia syndactyly as well as the Tupaia tana, which is described in the 
preceding article, form part of the Zoological Collection which was forwarded to 
the Honourable East India Company, by Sir Stamford Raffles, from Sumatra; 
