656 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



TUPAIA FERRUGINEA BATAMANA, new subspecies. 

 1906. Tupma ferruginea, Miller, Proc. U. S. Nat. Mus., XXXI, 1906, p. 271. 



Type.— Adult female, skin and skull, Cat. No. 142151, U. S. N. M., 

 collected at Senimba Bay, Batam Island, south of Malay Peninsula, 

 September 15, 1905, by Mr. C. Boden Kloss. Original number 2. 



Diagnostic characters. — Very similar to Tupaia ferruginea Raffles, 

 of Singapore and Mala}^ Peninsula, but tail gra3^er, skull and teeth 

 heavier. 



Color. — Tujpaia ferruginea hatamana so closely resembles the typical 

 form that no detailed description is necessary; in the majority of speci- 

 mens the tail is grayer than it is in the mainland animal. 



Skull and teeth. — The skull of Tipa la ferruginea hatania7iaQNQ,r2igQ.8 

 longer and wider than skulls of the typical form and the sagittal crest 

 is longer and more prominent. The angle of the mandible is heavier. 

 The molar teeth are heavier throughout. For the greater size of the 

 skull of the insular subspecies over the mainland form, see table of 

 measurements, page 65 Y. The difference in size is very strikingly 

 brought out by placing the two series of skulls side by side so that the 

 zygomatic arch of one touches that of the next. When the eight skulls 

 of each series are so arranged, it is found that the skulls of Tu/paia 

 ferruginea hatamana make a row longer by the width of half a skull 

 than the corresponding row of Tupaia ferruginea. If the two series 

 are arranged longitudinally, the row of island skulls extends about a 

 third of a skull be^^ond the row of mainland skulls. 



Measurements. — External and cranial measurements of the type: 

 Total length, 360 mm.; tail vertebrae, 160; hind foot without claws, 

 43; ear, 17; greatest length of skull, 53; basal length, 46.5; palatal 

 length, 28.8; zygomatic breadth, 27.5; greatest width between outer 

 surfaces of molars, 17.5; interorbital constriction, 15.4; breadth of 

 brain case above roots of zj^gomata, 20; mandible, front of symphysis 

 to back of condyle, 35.2. For cranial measurements of the series, see 

 table, page 657. 



Sjjeciniens examined. — Eight, two skins and skulls collected in Sep- 

 tember, 1905, and six in alcohol, collected at the same time but not 

 received until the later collection was sent in. 



Remarks. — The characters of this subspecies were pointed out by 

 Mr. Miller, who had at his disposal the two skins and skulls only. 

 The six additional specimens later received from Mr. Kloss contirm 

 in every way the characters that were previously shown to be present. 



