LIST OF AUSTRALASIAN AND AUSTBO-PACIFIC MUEIDAE.— LONGMAN. 27 



The name Limnomys, being preoccupied, was changed to Drosomys by Oldfield 

 Thomas on December 31st of the same year (Proc. Biol. Soc. Wash., xix, p. 199), but 

 in the meantime Poche had proposed Parahydromys, which name has thus a slender 

 priority over that of the original describer. 



Type locahty : Mt. Gaj^ata, Richardson Range, Papua. 



*Genus LEPTOMYS, Thomas, 1897. 

 " Molars strictly Hydromyine in structure, but 3/3 in number." 

 *Leptomys elegans, Thomas. 



1897. — Leptomys elegans, Thomas, Mus. Civ., p. 610. 

 Habitat : Papua. 



*Genus CROSSOMYS, Thomas, 1907. 



" A highly specialized aquatic form." 



*Crossomys moncktoni, Thomas. 



WOT .—Crossomys moncktoni, Thomas, Ann. Mag. Nat. His., xx, 1907, p. 70. 



Type locality : Serigina, Brown River, N. E. Papua. 



Subfamily MURINE. 



(1857. MurincB, Baird, Mamm. N. Amer., p. 434.) 



The old method of incorporating about twenty AustraUan species in the genus 

 Mus is now quite untenable. This genus, sensu stricto, can now be used only for the 

 imported Mus musculus. The common black rat is now designated as Epimys rattus, 

 and the brown rat, once familiar under the name of Mus decumanus, Pallas (1778), 

 is also placed in Trouessart's genus Epimys with the specific name of norvegicus,. 

 Erxleben (1777). 



The AustraHan and Papuan species may be enumerated as follows : — 

 Genus EPIMYS, Trouessart, 1881. Ty^e— Mus rattus, L. 



1910.— G. S. Miller, Pr. Biol. Soc. Wash., xxiii., pp. 57-60 ; Thomas, Ann. 

 Mag. Nat. His., vi., p. 603. 



Epimys assimilis, Gould. "AlUed Rat." 



1S51.—MUS assimilis, Gould, P.Z.S., 1857, p. 241. 

 1863. — Mus assimilis, Gould, Mamm. Austr., iii, 1863, pi. xv. 

 1887.— J/ms assimilis, Collett, Zool. Jahr., 1887, p. 838. 

 1892.— Jt/i^s assimilis, Ogilby, Cat. Aus. Mamm., 1892, p. 105. 

 1910. — Epimys assimilis, Thomas, Ann. Mag. Nat. His., vi, 1910, p. 605. 

 Habitat : From North-Eastern Queensland to South- Western Australia. 



Epimys browni, Alston. 



mil.—Mus browni, Alst., P.Z.S., i, p. 123 ; ibid. 743. 

 ISIS.— Mus echimyoides. Rams., P.L.S. N.S.W., ii, p. 14. 

 lSSl.~Mus echimyoides. Pet. & Dor., Mus. Civ., xvi, p. 699. 



