664 OLDFIELD THOMAS 



Upon the species as peculiar to the Mentawei Islands , whence 

 an accidental specimen, perhaps in captivity, where its young 

 may have been born, may have found its w^ay into the hands 

 of Prof. Strempel or whoever was the collector of the Berlin 

 examples. 



As compared to other Malayan species, S. polenziani seems 

 to be most nearly allieti to S. hosei and S. everetli^ with which 

 alone it shares the absence of any forwardly (Urected supraorbital 

 or occipital hairs, combined with the presence of a well defined 

 sagittal hair crest. 



2. Macaeus iioinesstrimx!!», L. (') 



a. iiiim. (/. Si Obau. 



3. Ir*tei'opiis vam.i>yi*iis 5 L. 



a. b. ^. 8i Obau. Apr. May 1894. 



4. F*tei*opvi.s hyponielaiius , Tkm.m. 

 a. c/. Si Oban. Aug. 1894. 



5. Cyiioptei'iis Mxar*g-iiiatiis , Geoff. 

 a.-n. 14 specimeus. Si Oban, May 1894. 



G. Hipposicleni.s tliadema, Geoff. 

 a. 9 • Sereinu (Sipora) May 1894. 



7. Hipposiclei'us ^-aleritus. Cant. 

 a. b. 9. Simatobe, N. Siijora. July 1894. 



(') By a pure but very lucky accident the familiar j,'eiieric name of Macacus is 

 not superseded by Pithecus. E. Geoff, and G. Cuv. (Mag- Encycl. HI, p. 162, 1795) 

 as 1 had until now supposed would prove to be the case. It so happens that under 

 the heading of •' Genre IV. Macaque. — Pithecus „ , the first species named is " Simia 

 veter „ , which should therefore be looked upon as the type. This species, however, 

 Mr. Blanford (P. Z. S. 1887, p. 022) has shown to be indeterminable , even generi- 

 cally, so that, with its type, Pithecus may be consigned to the limbo of unre- 

 cognisable names. 



