20 



SIMIIDJE. 



Its fronto-nasal depth also is less than in S. entellus, the nasals being short and 

 broad, and the nasal opening considerably shorter than in that species. A line 

 drawn through the centre of the face, from the alveolar border of the premaxillaries 

 to the supraorbital ridge, does not touch the distal ends of the nasals, these bones 

 being rather flattened and broad and slightly concave. These differences in the 

 details of the configuration must confer on S. priamus a very different visage 

 from that of S. entellus. There is not much difference in the teeth of the two 

 forms, but in S. priamus they are relatively larger than in S. entellus, except the 

 canines, which are smaller. The palate has the general characters of that of 

 S. entellus, and, like it, is of variable depth. The differences in the relative sizes of 

 these two skulls are indicated in the following measurements : — 



Tip of premaxillaries to centre of lambdoidal ridge 



Ditto to anterior margin of foramen magnum . 

 Ditto to end of palate 



Breadth across fronto-malar suture 



Greatest breadth across zygomatic arch _ 



Depth through coronoid process of mandible 



Transverse breadth of ascending ramus in a line with alveolar border 



Length of symphysis . . _ 



Transverse breadth of symphysis 



S. scliis- 

 taceus. 



•30 

 •85 

 •22 

 •00 

 95 

 45 

 ■45 

 50 



8. S. 



entellus. priamus. 



5-05 

 350 

 2^05 

 3-00 

 4-00 

 251 

 1-38 

 1-25 

 0-50 



4 60 

 3-28 

 1-95 

 290 

 3-63 

 2^10 

 1-30 

 1-10 

 0-58 



Prom the foregoing measurements it will be observed that the lower jaw of 

 S. scMstaceus is characterised by great depth and breadth of symphysis, and that 

 >S'. priamus resembles it in having a symphysis relatively broader than S. entellus. 



This species inhabits the Eastern Ghats of India, and Northern Ceylon. 



Semnopithecus hypoleucus, Blyth. 



SemnopitJiecus JiypoU^icus, Blyth, Journ. As. Soc. Beng". vol. x. 1841, p. 839; vol. xii. 1843, 



pp. 170, 172; vol. xiii. 1844, pp. 470, 476; vol. xvi. 1847, p. 733, pi. xxvi. %. 1, and 



p. 1271; Aim. & Mag. Nat. Hist. vol. xx. 1851, p. 313; Horsfield, Cat. Mamm. E. Ind. 



Co. Mus. 1851, p. 14; Wagner, Schreber, Saugeth. Suppl. vol. v. 1855, p. 31. 

 Se7nnopithecus johnii, var. Martin, Nat. Hist. Quad. 1841, p. 489 ; Gray, Cat. Monkeys and Lemurs^ 



1870, p. 14. 

 Semnopithecus djissumieri, Is. Geoff. St.-Hil. Comptes Rendus, 1842, vol. xv. p. 719 ; Arch, du Mus. 



vol. ii. 1843, p. 538, pi. xxx. ; vol. v. 1852, p. 537; Cat. Method des Mammif. 1851, p. 13; 



Gervais, Hist. Nat. des Mammif. 1854, p. 61, pi. iv. ; Dahlbom, Stud. Zool. Fam. Reg. 



An. 1856, pp. 87, 89. 

 Preshytis joJmii, Blyth, Journ. As. Soc. Beng. vol. xxviii. 1859, p. 283 ; Cat. Mam. As, Soc. 



Mus. 1863, p. 12 ; Jerdon, Mam. Ind. 1867, p. 7. 



Brown from the shoulders to the root of the tail, darkest on the middle of the 

 back, paler on the sides and the posterior half of the outside of the thighs. Anti- 

 brachium, front of the thighs and lower half of leg black, and light brownish on the 

 front of the tibia ; hands and feet black. Head, throat, under parts, and inside 

 of brachium and thighs yellow, and especially bright on the chest and belly. Tail 



