PROPITHECUS 171 



inner part of thighs chestnut; inner side of arms, legs, and abdomen 

 burnt umber ; chest black ; tail black. Ex type in Paris Museum. 



The melanistic style has the face, head, neck, back, sides, limbs, 

 hands, feet and tail black; at root of tail a cinnamon rufous spot; 

 entire under parts and inner side of limbs drab washed with mars 

 brown. Ex type P. holomelas British Museum. 



Measurements. Skull : occipito-nasal length, 84 ; Hensel, 69 ; zygo- 

 matic width, 59; intertemporal width, 39; palatal length, 31; median 

 length of nasals, 19; width of braincase, 49; length of upper molar 

 series, 28; length of mandible, 60; length of lower molar series, 31. 



Propithecus diadema sericeus Grandidier. 



Propithecus diadema var. sericeus Grandid., Rev. Zool., 1872, p. 

 274; Milne-Edw. et Grandid., Hist. Nat. Madag., Mamm., I, 

 1875, p. 4, pi. II ; Forbes, Handb. Primates, I, 1894, p. 99. 



Propithecus sericeus Schleg., Mus. Pays-Bas, Simise, 1876, p. 292. 

 (Note). 



SILKY SIFAKA. 



Type locality. Sambava, northwest coast of Madagascar. Type 

 in Paris Museum. 



Geogr. Distr. Narrow belt of forest between the rivers Lokoi and 

 Bemarivo, on eastern side of the mountains in north western Mada- 

 gascar. 



Gen. Char. Body white or washed with yellow; face black, 

 spotted. 



Color. Face and forehead black, spotted with yellow ; top and back 

 of head dark brownish gray; back, shoulders and arms pale fawn; 

 hands black ; rest of body, legs and tail white. 



The type in the Paris Museum is entirely white, the other colors 

 having disappeared from exposure to light. 



Measurements. Size equal to P. v. coronatus. Skull : occipito- 

 nasal length, 77 ; Hensel, 68 ; zygomatic width, 57 ; intertemporal width, 

 31; median length of nasals, 14; length of upper molar series, 28; 

 length of mandible, 56; length of lower molar series, 31. 



Propithecus verreatjxi Grandidier. 



Propithecus verreauxi Grandid., Rev. Mag. Zool., 1867, pp. 84, 

 313 ; Id. Album Reunion, IV, 1867, p. 162, pis. I-II ; Gray, 

 Cat. Monkeys, Lemurs and Fruit-eating Bats, 1870, p. 136 ; Id. 

 Proc. Zool. Soc. Lond., 1872, p. 847 ; Milne-Edw. et Grandid., 

 Hist. Nat. Mad., Mamm., I, 1875, p. 305, pis. IV, VIII; 



