147 



greatest length, 52 ; basal length, 45 ; palatal length, 25 ; least palatal 

 breadth, 475 ; diastema, 15 ; length of upper molar-row, 9 ; length of 

 palatal foramina, 8.25 ; combined breadth of foramina, 3.25 ; median 

 length of nasals, 20 ; interorbital breadth, 7 ; cranial breadth, 18 ; 

 zygomatic breadth, 24 ; gi-eatest length of bullae, 8.5 ; greatest depth of 

 bullae from highest point in inferior edge of squamous bono, 9 ; 

 anterior breadth of basi-occipital, 5 m.m. 



Specimens examined. — Four, all from Singapore Island. 



Remarks. — Though allied to Mvs validus this rat may be im- 

 mediately distinguished by the abruptness of the line of demarcation 

 between the colours of the sides and abdomen. Its skull notal)]y 

 differs in the larger bullae and less developed post-orbital ridges. 



A PEOVISIONAL LIST OF THE MAMMALS OF THE 

 PENINSULAR REGION. 



By C. BODEN KLOSS. 



^PHE last and most complete account of the Mammals of the Malay 

 Peninsula previously drawn up was that of Mr. Stanley S. Flower 

 (P.Z.S., 1900, pp. 338-351), in which about one himdred and forty 

 species are recorded from our area. The work of naturalists during 

 the last ten years, during which period there has been a great revival 

 of interest in the Zoology of the Peninsula, has added considerably to 

 the amount, which has been further increased by the discovery of a 

 number of geographical races in the adjacent small islands that had 

 hitherto remained unvisited, so that at the moment of writing, and 

 disregarding reports shortly forthcoming on recent collections, the 

 mammal fauna is now swollen to a total of nearly two hundre<l and 

 twenty. 



The Peninsular Region as treated here may be defined as contain- 

 ing the Malay Peninsula south of the Isthmus of Kra and all the 

 small islands closely adjacent, of which the principal are : — Junkceylon, 

 the entire Langkawi gi'oup, Penang, Pulo Jarak, Singapore, the Tioman 

 and Tinggi chains, the Redangs and the group of islands off the Ban- 

 don Bight : but not the Rhio Archipelago, the fauna of which is more 

 nearly related elsewhere than to the Peninsula. 



Okdkr primates. 

 APES, MONKEYS AND LEMURS. 



1. 



2. 

 3. 



4. 

 5. 

 6. 



7- 



Symphalangus sj). 

 Hylobates lar (Linn.). 

 Hylobates agilis, F. Cuvier. 

 Presbytes ci-i status (Raffles). 

 Presbytes obscurus (Beid). 

 Presbytes femoralis (Horsf.). 

 Presbytes albocinereus 

 (Cantor). 



8. Macaca fascicularis (Raffles). 



9. Macaca nemestrina (Linn.). 

 9a. Macaca nemestrina adusta, 



Miller. 



10. Macaca rufescens, Anderson. 



11. Nycticebus malayanus 



(Anderson). 



