ALLEN: MAMMALIA. 209 
he gave were probably not maximum and this is undoubtedly true. Our smallest 
specimen is immature, and its skull agrees almost exactly in size and proportions 
with that figured by the describer. The four others are adult and considerably 
larger. The collector’s measurements of these follow: — 
No. Total Length. Tail. Hind Foot. 
7560 ~ 451 89 60 
7561 434 76 58 
7562 395 61 57 
7563 386 55 52 
The skull of No. 7562 measures: — greatest length, 75 mm.; basal length, 
72; palatal length, 48.5; zygomatic breadth, 60; mastoid breadth, 36; inter- 
orbital constriction, 11; mandible from condyle to tip of incisor, 61.5; alveolar 
length of upper cheek teeth, 17; alveolar length of lower cheek teeth, 15; upper 
diastema, 24; lower diastema, 12.5. 
Three of the four adults have a midventral white streak on the chest. 
MURIDAE. 
MyospaLax FONTANIHRI (Milne Edwards). 
This species was originally described on the basis of a specimen from Pekin, 
and later Milne Edwards recorded others from Siwan, sixty miles to the north- 
west. Thomas (1908a, p. 978) has recently recorded the species from the Ordos 
Desert in the Province of Shensi, and from localities in the Province of Shansi 
to the eastward. Two specimens were obtained by Mr. Zappey in Hupeh, at 
Showlungtan and Kongchikow respectively, constituting apparently the most 
southeasterly localities yet known for the genus. While seemingly representing 
Milne Edwards’s species, it is possible that they may eventually prove to con- 
stitute a slightly different race. In cranial characters they agree closely with 
M. fontanieri as figured by Milne Edwards in his ‘“‘ Recherches.”” They seem to 
differ, however, in the absence of a white median streak in the forehead, although 
in both our examples there is more or less white about the muzzle and on the 
upper and lower lips. This marking was believed by Milne Edwards to be 
inconstant, but Thomas found some trace of it in all of his eleven specimens 
from Shensi and Shansi. Moreover the nose pad in our two specimens is pro-_ 
duced at its upper median border into a somewhat mitre-shaped lobe instead of 
being evenly rounded dorsally as figured by Milne Edwards. The exact value 
of these differences is not clear in the lack of material for comparison. From 
