n€)o Japanese Manunals. 489 



succeeded behind by a fairly piomiueiit liglit clieek-patcli, 

 and a dull fulvous one below aud behind the ear. Hinder 

 end of nasaU squarely truncated. 

 Tosa, island of KSikoku. 



Detailed descriptions of the new forms : — 



Petaurista leucogenys nikkom's. 



Fur very long, soft, and thick ; hairs of back 50-60 mm. 

 in length, the underl'ur about 40-i5. General colour above 

 comparatively ])ale, a greyish drab, rather paler than Ridg- 

 way's "drab/' Individually the longer hairs are greyish 

 basally, with a broad whitisii or buffy whitish subterminal 

 band and a fine black tip ; the abundant underfur slaty, with 

 about 5 mm. at the tip clay-colour. Laterally the hairs are 

 shorter and the colour becomes more buffy brownish ; a 

 broad patch at the end of the patagial cartilage deep ochra- 

 ceous butF. Under surface either pure white or faintly 

 washed with buffy ; no slaty bases to the hairs ; a small 

 blackish spot on the chin. Head coloured above like back or 

 a little more buffy, becoming greyish on the nose and whitish 

 round the mouth ; cheeks below eyes broccoli-brown ; light 

 cheek-patch very conspicuous, pure white, most of the hairs 

 white to their roots, extending up on to the crown in front of 

 the ears and downwards nearly to meet the white of the 

 throat. Ears surrounded by a buffy area, with scarcely a 

 trace of a black jiatcli at their posterior bases. Forearms 

 dark grey, little mixed with the buffy rings on the longer 

 hairs ; hands dark brown. Hind limbs with the dull buffy 

 of the sides extending on to the middle of the metatarsus, its 

 sides and the digits bruwnish black. Tail short, thick, very 

 bushy, its breadth across the outstretched hairs about 

 150 mm.; in colour above and below it is of about the same 

 greyish drab as the back. 



Skull as in tjpical leucogenys, the nasals similarly pro- 

 jecting backwards behind the premaxillary processes. 



Measurements of the type : — 



Head and body 420 mm,; tail 280; hind foot (s. u.) 67. 



Skull: greatest length 68'5 ; basilar length 54; nasals, 

 length 23 ; length of upper tooth series without anterior 

 premolar 14" 5. 



JJab. Nikko, Central Hondo. 



Type. Male. B.M. no. 5. 1. 4. 50. Original number 31, 

 Collected by H. Ogawa, and presented by li. Gordon Smith, 

 Esq. Six specimens examined. 



Ann. li; May. N. Hist. Ser. 7. Vol. w. 33 



