MAMMALS COLLECTED IN SIAM. 377 
Remarks. The characters noted seem common to all the 
examples obtained at Lat Bua Kao, so that animals from this locality 
may be regarded as representing a distinct local race. Specimens 
_ from the range of hills which separate the Central Siam plain from the 
Korat basin, which I have recorded as finis! are somewhat variable, 
and this locality seems to be part of the region where one form 
merges into the other. 
35. Rattus rajah kramis, subsp. nov. 
Specimens examined. 435 ad. 32 ad., 1d subad. and 2 
juvenile examples from Koh Kram in the Inner Gulf of Siam. 
Diagnosis. Rather smaller than neighbouring races of 
R. rajah. Paler and yellower than R. r. finis with the black ele- 
ment disposed somewhat patchily ; white of underparts extending to 
fore and hind-feet. 
Upper tooth-rows always longer than the palatal foramina 
and slightly converging posteriorly; supra-orbital ridges more de- 
flected than in finis of the adjacent mainland and with more marked- 
ly angular projections at the terminations of the fronto-parietal 
sutures; palatal foramina smaller. 
Type. Adult male (skin and skull) No. 2277/C B K. Collect- 
ed on Koh Kram, Inner Gulf of Siam on 30th October 1916. 
Measurements. See table postea. 
36. Rattus rattus neglectus. 
Mus neglectus, Jentink, Notes Leyden Museum, IT, p. 14 (1880). 
( Borneo ). 
Mus rattus, Flower, P. Z. 8. 1900, p. 361. 
Epimys rattus, subsp., Kloss, P. Z. 8., 1916, p. 55; id. Journ. Nat. 
Hist. Soc. Siam, IT, p. 26 (1916); id. tom. cit., p. 85. 
Rattus rattus jalorensis, Gyldenstolpe, Kungl. Sv. Vet. Akad. 
Handl. 57. No. 2, p. 43 (1917). 
53,32 Tachin. 
1¢,12 Koh Lak. 
Colour above varying from pale ochraceous or bright tawny 
slightly streaked with black to tawny much blackened ; below white, 
1 Enimys surifer finis, Journ. Nat. Hist. Soc. Siam, IT, p. 26 (1916). 
VOL. Il, NO. 4, 1919. 
