105 



DiMENSIONy OF THE TyPE : 



Head and body, 199 mm. ; tail, 90 ; hind foot (s. u.), 37. 



Skull: greatest length *, 53 ; basilar length, 43.5; zygomatic breadth, 

 25.5; nasals, 18.5 x 5.3 ; interorbital breadth, 12 ; breadth of brain-case, 

 20.5; diastema, 15.5 ; length of bulla, 10 ; length of upper tooth-series, 

 11.8. 



Type.— Adult female. B.M. No. 8. 1. 25. 15. Original number 337. 

 Collected 7th June, 1906, by H. C. Kobinson, 



This Long-nosed Squirrel differs very markedly from the Malayan 

 Ehinosciurus, both iu colour and skull-characters, and is clearly more 

 nearly allied to the Bornean representative of the genus. The Museum 

 had already received from Mr. Kobinson a good example of M. tupaioides, 

 collected by him in Pahang, and this shows well the white belly, buffy 

 flanks, and white-washed tail which distinguish that animal from the 

 insular forms. 



I have much pleasure in naming this distinct species in honour of 

 Mr. Robinson, its discoverer, to whom we are indebted for so much of 

 our knowledge of the mammalian fauna of the Malay Peninsula and 

 its islands. 



3IUS TIOJIAXICUS, Mill. 



^330,333; $331,332. Jiiaia Bay, Tiomau. 



A member of the negledm group. 



MUS SLRIFER,' Mill. 

 <? 335, 336 ; ? 334. Juara Bay, Pulo Tioniaii. 



These specimens appear to be quite similar to those in the British 

 Museum, obtained by Mr. C. B. Kloss and mentioned in Mr. Bonhote's 

 paper on his collection. 



ATHERiilirS TlOXISt, sp. )i. 

 (J 324 (skull only), 325; $323. Juai-a Bay, Tiomau. 



Similar to the mainland A. macrourus in colom* and in the detailed 

 skull-characters which separate A. zyyomaticus from that species, but 

 markedly smaller, with shorter tail, the skull less inflated, and smaller 

 throughout. 



Skull lower and less inflated than in macrourus, but its shape 

 othei'wise very similar. Nasals rather larger in proportion, their size 

 nearly equalling that found in the larger form. Molars smaller in all 

 dimensions. 



* The type is rather a small specimen ; two other skulls measure 56 and 56.5 

 mm. in greatest length. 



t The niiddle syllable of Tioman being long, as in all other Malay names 

 tlius making such a word as Hovianicus almost unpronounceable, I have permitted 

 myself the liberty of abbreviating the name of the island. 



