120 
Mus callithrichus Jentink (Plate X, figs. 4, 5 and 6). 
South-Celebes : Pare-Pare; skull without lower jaws (15). 
This skull agrees so exactly with the same bony parts of our fcy- 
pical specimens of this species, described by me in the Notes from 
the Leyden Museum, 1879, p. 12, that I do not hesitate a moment 
in bringing it under the named head. It is very easy to distinguish 
Mus callithrichus from the other large-sized Celebean-mice by the skul 
alone; cf. plate X, hg*. 4, 5, 6, with plate 7, fig*. 5— 12 in my Catalogue 
ostdologique , 1887, which represent the skulls of Mus meyeri and Mus 
mülleri; see also B. Hoffinann, Säugethiere aus dem ostindischen 
Archipel, Abh. Museum, Dresden, 1887, plate 8, fig. 3, representing the 
skull of Mus musschenbroekii. 
Mus lepturus Jentink. 
Java: Buitenzorg; skin: very young cf (608 d). 
As I know no other species of mice from the Indian Archipelago 
having a tail ending in a small tuft like the species described by me 
in the Notes from the Leyden Museum, 1880, p. 17, under thename 
of Mus lepturus , and as the very young male-specimen from Buiten- 
zorg presents this characteristic , I think, that there is reason to 
believe that they agree, the more as the tail in our specimen is very 
long and the lowerparts ot the animal are pure white colored like in 
M. lepturus. 
Mus ivichmanni n. sp. (Plates IX and X, hg*. 7—11). 
Flores: Sikka; skin : adult male (518); (9) young specimen from 
Uma ili, mountainous region near Sikka. 
Upperparts colored like the same parts in the well known Mus 
decumanus ; underparts of body and inside of legs pure white, the 
hairs being wholly snow-white colored. Ears broadly rounded off. 
As the tail unfortunately has lost its epidermis and all fleshy parts, 
I can say nothing about the teguments of that organ; as however 
the basal part of the tail has preserved its epidermis for about 35 mm. , 
I can state that there are about 15 scales to the centimetre and that the 
tail is covered with very short black hairs. Hands und feet white, the 
elongate white hairs overcover the pure white claws. The three middle 
fingers of the feet are about of the same length ; thumb without claw 
reaches to he end of the ürst phalanx of the Index finger; fifthfinger 
with claw reaches to the end of the second phalanx of the fourth 
