248 SYNOPSIS or THE SIMIAD.E. 



gray; hands, feet, and ears, nearly black; cal.osities large. 

 Inhabits Malacca and the Sunda-Isles. 



PLATE IV. 6. H. SYNDACTYLA. The Siamang. Simla syndactyla, 

 Raff, Trans. Lin. Soc. xiii. p. 241; Horsf. Java. Hair black; 

 neck and upper part of the breast naked, and prominent from 

 the size of the laryngeal sacks; first and second finger of 

 lower extremities united to the end of the second phalanx; 

 callosities none. Inhabits Island of Sumatra. 



Pi-ATE V. 7. H. AQILIS. The Active Gibbon. Fred. Cuv. Mammif. 

 Hair clear brown, changing to a shining yellow on the back; 

 white band above the eyes ; face bare, in the male blue, in the 

 female yellow; callosities small. Lives in troops, and dis- 

 plays very great agility. Inhabits Sumatra. 



GUENONS. 



GENUS IV. Presbytis, ESCHSCHOLTZ. 

 Facial angle 60; cheek-pouches none; callosities distinct; tail 

 long; arms reaching to the knees. 



1. P. MITRCLA, the Capped Monkey. Eschsch. in Kotzeb. Voy. of 

 Discov. Hair curled, above bluish gray, beneath grayish white; 

 B black line from the upper part of the ears aci ts the head; 

 length of the body about li foot, tail long. Inhabits Su- 

 matra.* 



GENUS V.Cocobus, ILLIGER. 



Muzzle short; nostrils approximated; tail longer than the body; 

 limbs slender; upper extremities without thumbs. 



2- C. POLYCOMUS, Full-bottomed Monkev. Geoff. Ann. du Mus. 

 xix. p. 92 ; Desm. Mamm. p. 53. Neck with a mane in the form 

 of a hood, covering the upper part of the back and shoulders, 

 variegated with black and fawn colour; body deep shininj 



* From Griffith's Animal Kingdom. 



