118 



17. SCIURUS ERYTHR^US RUBEOULUS, Millek. 

 Sciurus rubeculvis, Miller, Smithsonian Misc. Coll., vol. 45, 

 p. 22 (1903). 



7 <?, 1 ? . Kao NawDg, Baudon, S.W. Siam, 3,500 feet. 24-26tli June, 1913. 



The eight speciraens enumei'ated above, all collected within a 

 few hundred yards of each other and in a period of three days, 

 are in very variable pelage, ranging from an individual in which the 

 whole under surface, except a narrow median line and the chin and 

 throat, is mahogany red to one in which the latter colour is merely 

 represented by two faint latex'al streaks on the belly, all the hairs of 

 which are otherwise annulated. The disappearance of the mahogany 

 red is also correlated with a reduction in the intensity of the buffy 

 orange suffusion on the upper surface and with a darkening of the 

 tail, in which the black annulations become more predominant. 

 The changes are obviously seasonal and not individual, the same 

 mutations being observed in the race from Formosa, the names 

 Sc. thaiwanensis, Sc. th. centralis and Sc. th. roherti having been 

 founded on them by Bonhote (Ann. Mag. Nat. Hist (7) vii, 

 pp. 165,166) the latter two of which will have to be suppressed. 



The form from the mountains of the central part of the Malay 

 Peninsula, Sc. erythnens youngi [Ann. Mag. Nat. Hist. (8) xiii, 

 p. 224 (1914)] has good claims to subspecific separation. It is 

 decidedly duller in colour, distinctly smaller and, as the very large 

 series in the Federated Malay States Museums shows, has no 

 seasonal change of pelage. 



(For measurements see p. 123.) 



18. SCIURUS HIPPURUS, Is. Geoffr. 



1 ^,1 ?. Kao Nawng, Bandon, N.E. Malay Peninsula, 1,400 feet. June, 

 1913. 



Agreeing exactly with specimens from other parts of the Malay 

 Peninsula. The present locality is the most northerly on record, 

 the species not being yet known from Tenasserim. 



(For measurements see p. 123.) 



19. SCIURUS CONCOLOR MILLERI, Rob. & Weoughton. 



Sciurus epomophorus milleri, Rohinson and Wroughton, Journ. 

 Fed. Malay States. Mus., iv, p. 233 (1911). 



3 (J, 5 ?. Ban Kok Klap, Bandon, N.E. Mala)' Peninsula. June, July, 1913. 



Very common in kampong land. 



These squirrels belong to the section of the species with a clear 

 black tail tip, and with brighter colour patches on the shoulders and 

 thighs, though in some specimens these are not very obvious. 



They are very distinct from the southern Sc. concolor and from 

 the island forms Sc. c. epomophorus and related races but they are 



