54 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.45. 



♦ , 



Geographic distribution. — Islands of Lanka vi and Terutau, including 

 adjacent islets, west coast of IMalay Peninsula. See No. 23 on map 

 on page 75. 



Diagnosis. — Differs from Tupaia lacernata wilkinsoni of the opposite 

 mainland in its slightly smaller size and less tawny rump, darker tail, 

 and less conspicuous shoulder stripe, and slightly smaller skull and 

 teeth. 



Color. — As described above under the species, the tawny element of 

 the rump less pronounced than in the mainland form, and mth the 

 dark elements of the tail when viewed from above more conspicuous 

 and contrasted with the color of the back. 



Slcull and teeth. — These are nearly identical m appearance with 

 those of the mainland animal, but on the whole appear slightly 

 smaller. (Plate 8, fig. 5.) 



Measurements. ^Type: Head and body, 180 mm.; tail, 155; hind 

 foot, 44; condylo-basal length, 47.5; zygomatic width, 25; width of 

 bramcase, 20; maxillary tooth row, 19. Usual measurements : Head 

 and body, 170-185; tail, 140-150; hmd foot, 42-44; condylobasal, 

 45-47, zygomatic width, 24-25; %vidth of brain case, 19; maxillary 

 tooth row, 18. For details of measurements see table, page 57. 



Specimens examined. — Seventeen from Pulo Terutau and 14 from 

 Pulo Lankavi. 



TUPAIA LACERNATA RAVIANA Lyon. 



1911. Tupaia raviana Lyon, Proc. Biol. Soc. Wash., vol. 24, p. 167, June 16, 1911. 



Type-locality. — Pulo Rawi, Butang Islands, off west coast of Malay 

 Peninsula. 



Type-specimen. — In United States National Museum, Cat. No. 

 104355, Pulo Rawi, December 18, 1899; collected by Dr. W. L. 

 Abbott; original number, 172; in good condition. 



Geographic distribution. — Butang Islands, west coast of Malay 

 Peninsula. See No. 24 on map on page 75. 



Diagnosis. — Similar to Tupaia lacernata lacernata and T. lacernata 

 wilkinsoni, but skuU generaUy wider, and rostrum especially thicker 

 and wider, but somewhat lighter in color, and not so tawny on the 

 rump. 



Color. — Tupaia lacernata raviana differs in color from T. I. lacernata 

 in having the light annulations of the hau-s less ochraceous and more 

 buff y, and with only a trace of tawny on the rump ; the black element 

 of tail is less in evidence, so that the tail as a whole is somewhat lighter; 

 the feet are grayer and less ochi*aceous than they are m T. I. lacernata; 

 the underparts and shoulder stripe are not different in the two forms. 



Slcull and teeth. — In general, the skuU and teeth of Tupaia lacernata 

 raviana resemble those of T. I. wilkinsoni and T. I. lacernata, but the 

 skull is noticeably wider, with a tliicker and wider rostrum, and more 

 spreading zygomata. The skull differences whUe not appearing con- 

 siderable in a description, are quite marked when skuUs of the two 



