NO. 1976. TREE8HREWS: FA2IILY TVPAIIDJE—LYO'S\ 147 



TANA CERVICALIS (Miller). 



(Synonymy, type-specimens, etc., under the subspecies.) 



Geographic distribution. — The Batu Islands off the west coast of 

 Sumatra. See Nos. 9 and 10 on map on page 143. 



Diagnosis. — The two members of this species differing considerably 

 from each other are distinguished from Tana tana by their bright 

 ruddy style of coloration accompanied with a large and well defined 

 brilliant black area on the lower back; mammae, 2-2 = 4. 



CoZor.— Sides of body, tail, outer side of legs dark, rich ferruginous, 

 washed or lined with black about base of tail, middle of sides and 

 thighs, the black becoming conspicuous on the lower back where it 

 may form a well defined black patch of moderate area or spread over 

 almost the entire posterior portion of body in a brilliant black pattern, 

 underparts of body including inner side of legs bright cinnamon rufous; 

 underside of tail rich ferruginous, darkening to burnt sienna along 

 the edges ; light area on either side of the dorsal stripe varying from 

 a grizzled mixture of blackish and cream-buff to a mixture of blackish 

 and tawny ochraceous; shoulder stripe cream buff to ochraceous. 



Slcull and teetli. — There are no characters by which the skull and 

 teeth of Tana cervicalis may be distinguished from those of related 

 species, nor the different fotms from each other. 



Measurements. — Head and body, 205-215 mm.; tail, 155-165; hind 

 foot, 43-47; condylo-basal length, 53-54; zj^gomatic width, 25-26; 

 width of brain case, 19.5-20; maxillary tooth row, 20-21.5. 



Subspecies. — Two subspecies of Tana cervicalis may be recognized: 

 T. cervicalis cervicalis, Tana Bala; T. cervicalis masse., Tana Masa, 

 Batu Islands. 



Remarlcs. — Tana cervicalis is not distantly removed from T. tana, 

 but is immediately distinguishable by the large, conspicuous briUiant 

 black area of the lower back. This character, however, is only one 

 of degree, for in T. tavM, many examples are seen where a darkened 

 or even black area exists on the lower back, but it is never so intense 

 in color, or so large, extending so far on the sides, or so far anteriorly. 



TANA CERVICALIS CERVICALIS (MiUer). 



1903. Tupaia cervicalis Miller, Smiths. Misc. Coll., vol. 45, p. 59, November 6, 

 1903. 



Type-locality. — Tana Bala, Batu Islands, off west coast of Sumatra. 



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

 121754, skin and skull of adult male collected on Tana Bala, Batu 

 Islands, February 14, 1903, by Dr. W. L. Abbott; original number, 

 2294 ; in good condition. 



