MUS SABANUS Thomas.
1887. Mus sabanus Thomas, Ann. and Mag. Nat. Hist., 5th ser., XX, p. 270. October, 1887 (Mt. Kina Balu, Borneo).
1894. Mus sabanus Thomas and Hartert, Novitates Zoologicæ, I, p. 658. September, 1894 (Bunguran).
Thirteen skins and one extra skull, all from Bunguran. There is little probability that this rat is the same as the true Mus sabanus of Borneo.
MUS RAJAH Thomas.
1894. Mus hellwaldi Thomas and Hartert, Novitates Zoologicæ, I, p. 658. September, 1894 (Bunguran).
1894. Mus rajah Thomas, Ann. and Mag. Nat. Hist., 6th ser., XIV, p. 451. December, 1894 (Mount Batu Song, Borneo).
1895. Mus rajah Thomas, Novitates Zoologicæ, II, p. 26. February, 1895 (Revised determination of Bunguran specimens).
Six specimens (one in alcohol) from Bunguran, two from Pulo Lingung, one from Pulo Laut, four (one in alcohol) from Sirhassen, and one (in alcohol) from Pulo Midei. It is doubtful whether these series are referable to one species or whether any of them are the true Bornean Mus rajah. The material is not wholly satisfactory, and I have been unable to examine specimens from Borneo.
MUS NEGLECTUS Jentink.
1894. Mus rattus var. Thomas and Hartert, Novitates Zoologicæ, I, p. 658. September, 1894 (Bunguran).
1895. Mus neglectus Thomas and Hartert, Novitates Zoologicæ, II, p. 492. December, 1895 (Bunguran).
Five specimens from Pulo Lingung, one from Pulo Midei, and nine from Sirhassen. In the absence of Bornean material, I follow Thomas and Hartert in referring the Natuna rats of the 'alexandrinus' type to Mus neglectus.