30 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vOL. 45 



pelago, March 12, 1900, by Dr. W. L. Abbott. Original number, 



350. 



Characters. — A light-colored member of the sabanus-vocifcrans 

 group, with disproportionately small feet. 



Color. — The ground color of back and sides is buff, rather darker 

 and brighter than that of Ridgway, but scarcely approaching ochra- 

 ceous. Back rather thickly sprinkled with dark brown hairs, sides 

 much less so. Underparts cream-buff. 



Measurements. — Measurements of type: total length, 514; head 

 and body, 222; tail vertebrae, 292; hind foot, 41 (38.6) ; ear from 

 meatus, 25.4 ; ear from crown, 20 ; skull, greatest length, 52 ; zygo- 

 matic breadth, 24. Hind foot in two other adult females, 41.4 

 (39.6) and 40 (38). Hind foot in two adult males, 42 (40) and 

 41.6 (394). 



Specimens examined. — Six, all from Bentinck Island. 



MUS LUCAS sp. nov. 



Type. — Adult female (skin and skull), No. 104,190, United States 

 National Museum. Collected on St. Luke Island, Mergui Archi- 

 pelago, January 20, 1900, by Dr. W. L. Abbott. Original number, 



253- 



Characters. — Similar to Mus stridulus but with feet of normal size. 



Color. — The color is almost exactly the same as that of Ahts 

 stridulus from Bentinck Island, though perhaps a trifle more yellow- 

 ish. It is therefore strikingly dift"erent from that of the dark Mus 

 matthceus of St. Matthew Island. 



Measurements. — Measurements of type : total length, 525 ; head 

 and body, 215; tail vertebrae, 309; hind foot, 46 (44) ; ear from 

 meatus, 26 ; ear from crown, 22 ; skull, greatest length, 52.4 ; zygo- 

 matic breadth, 2^. 



Specimens examined. — Three, all from St. Luke Island. 



Remarks. — While this species differs widely from its near geo- 

 graphical ally Mus matthceus it rather closely resembles the Mies 

 lancavensis of Pulo Lancawi. It is distinguishable from the latter 

 by the more reddish cast of the upperparts, and by the less con- 

 spicuous grizzle produced by the dark hairs of the back. 



MUS SOCCATUS sp. nov. 



Type. — Adult male (skin and skull). No. 121,549, United States 

 National Museum. Collected on North Pagi Island, Sumatra, De- 

 cember 29, 1902, by Dr. W. L. Abbott. Original number, 2183. 



Characters. — A large, very dark member of the sabanus-vocif erans 



