new Species of Helictis. 593 
entirely conceal the darker colour. Underparts dirty yel- 
lowish white. Markings on the face as in the other species, 
the white longitudinal line reaching to about the middle of 
the back. 
The skull is slightly larger than that of true personata 
and the auditory bulle considerably larger, especially when 
measured in the direction of the long axis of the skull. In 
other points, however, the skulls are similar. 
Dimensions (of type from skin) :— 
Head and body 400 millim.; tail 175; hind foot 60; 
ear 24, 
Skull (see below). 
Habitat. Saigon, Lower Cochin China. 
Type. B.M. 78. 6. 17. 7. Adult male collected by 
M. Pierre in March 1867. 
Outwardly this species, which is closely allied to H. per- 
sonata, may be recognized by its slightly larger size and 
more rufous coloration. The difference in the bulle of the 
skulls forms a well-marked and easily discernible character. 
Skull-measurements of H. personata and H. Pierrei compared. 
Width 
Greatest Length of basi- 
breadth of of occipital at 
Greatest Basal Palatal Zygomatic brain- auditory anterior 
length. length. length. breadth. case. bulle. end. 
HI. Pierrei, S,type.. 88 76 40 50 32 19 85 
H. personata, §,Siam. 80 70 37 46 30 17 (3) 
This genus can be subdivided into two well-marked groups, 
the difference lying in the size of the teeth, especially of the 
carnassial; the large-toothed group are the western forms, 
and consist of 
FT. nersonata (Is. Geoff.), from Pegu. 
Hi. nepalensis (Hodgs.), from Nepal. 
H., orientalis * (Horsf.), from Java. 
H, Pierrei, described above. 
Of the small-toothed group we have 
H, moschata, Gray, from China. 
H, subaurantiacu, Swinhoe, from Formosa. 
H, Everetti, Thos., from Borneo. 
H. subaurantiaca is very closely allied to the mainland 
* Melogale fusca, Guérin, Mag. Zool. 1835, pl. xvi., is a synonym of this 
species, 
