262 Mr. O. Thomas on new Mammals from 
A full list of the mammals will in due course appear in 
‘Nova Guinea,’ but in the meantime it seems advisable to 
publish preliminary diagnoses of the new forms. 
By the generosity of the authorities at Buitenzorg, the 
types of the new species are presented to the British Museum. 
Nyctimene celeno, sp. n. 
A large species related to JV. aed/o, with similar broad 
dorsal band, but rather smaller, and of browner coloration. 
Forearm 83 mm. Skull, greatest length 36°5. 
Hab. North New Guinea. 
Type. Adult male. B.M. no. 22. 2. 2. 2. 
Rattus mordax tramitius, subsp. n. 
Like true mordaw, but colour blackish grey, without fulvous 
suffusion. 
Head and body 175 mm.; tail 170 ; hind foot 35°5.  Skull- 
length 41:5. 
Hab. Doormanpad-bivak, N. New Guinea (W. C. van 
Hleurn). 
Type: Female. B.M. no. 22. 2.2.13. Original num- 
ber 86. 
Rattus cenorum, sp. n. 
Like R. mordaz, but larger, stouter, with heavier feet and 
skull. 
Head and body 207 mm.; tail 230; hind foot 44. Skull- 
length 47. 
Hab. Pionier-bivak, Mamberano River ( W. C. van Heurn). 
Type. Male. B.M. no. 22. 2.2.19. Original number 26. 
Rattus bandiculus, sp. n. 
A clumsy, heavily built rat, still larger than cw@norum. 
Head and body 252 mm. ; 1 tail 220; hind foot 49; skull- 
length 54. 
Hab. Pionier-bivak, aie River (W. C. van Heurn). 
Type. Old male. B.M. no. 22. 2. 2. 22. Original num- 
ber 25. 
