392 MR. J. L. BONHOTE ON THE [ISTov. 28, 



Habitat. This species was originally described from Tamsuy in 

 Formosa. But there is also a specimen collected by Mr. )Swinhoe 

 at Amoy, and other specimens in the Museum from W. Fokien. 



This is undoubtedly a small form of M. /iavijiecttis, distin- 

 guishable, apart fi'om its size, by the more elongated ear and finer 

 annulations to the tail. 



It is possible that the original losea from Formosa may prove 

 to be different fi'om the form inhabiting the mainland ; and this 

 is the more likely, as in the paper describing the original losea 

 Mr, Swinhoe ref eiTed to the specimen from Amoy as Mus riifescens. 

 For the present, however, owing to lack of material, I have no 

 alternative but to consider them all as losea. 



MUS GRISEIPECTUS A, M.-E. 



Mus indicus Geoffr., Swinhoe, P. Z, S. 1870, p. 635. 



Mus griseijjectus A. M.-E. JvTouv. Arch. Mus. 1871, p. 93; 

 id. Rech. Mamm. p. 290, pi. 42. fig. 2 (1874). 



Similar to M. fiavipectus, but slightly larger. Tail about 

 equal in length to the head and body. Fur soft and destitute of 

 spines. General colour above yellowish brown ; fur slate-grey at 

 base, with yellowish tips, and thickly interspersed among these 

 are longer thin black hairs, which predominate along the median 

 dorsal area. Upper surfaces of the feet and hands white. Under 

 parts white or greyish, the fur being dai-k at its base as in the 

 vipper parts. 



Skull. The skull, except in being slightly larger, closely re- 

 sembles that of M.Jlavipectus, and calls for no special comment. 



Dimensions. Head and body 196 mm. ; tail 160; hind foot 33 ; 

 ear 22. 



Shell. Greatest length 45 mm. ; basilar length 36 ; palatilar 

 length 22; diastema 13; length of incisive foramina 8; length 

 of nasals 17; zygomatic breadth 21*5; interorbital breadth 7; 

 bi'eadth of brain-case 18 ; length of molar series 8. 



Habitat. Sze-chuen (type-locality) ; also found in W. Fokien. 



There is but little further to add with regard to this species. 

 It is most likely to be confused with 31. flavij^ectus, but the 

 characters distinguishing it from that species have already been 

 given. There is, however, another small character which it may 

 be as well to notice. In M . jiavipectus the hands on their upper 

 surfaces are brown margined with white, while in all the specimens 

 of griseipectus that I have examined the upper surfaces of the 

 hands are uniformly white. 



Mus NORVEGICUS Erxl. 



Mus decumanus Pall., Swinhoe, P. Z. S. 1864, pp. 186, 382 ; id. 

 op. cit. 1870, pp. 233, 635. 



Mus humiliatus A. M.-E., Thos. P. Z. S. 1898, p. 772 

 (partim). 



