Vol. XXIV, pp. 165-166 June 16, 1911 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 







A NEW .MOUSE-DEER FROM THE RHIO-LINGA 



ARCHIPELAGO. 



BY GERR1T S. MILLER, JR. 

 Published by permission of the Secretary of the Smithsonian Institution.] 



When describing the napu of Pulo Bakong* I supposed that 

 the animal of Pulo Sebang was identical with it. Further com- 

 parison of the material shows, however, that the forms occurring 

 on tbf two islands must be regarded as distinct. 



Tragulus pretiellus parallelus subsp. nov. 



Type.— Adult male (skin and skull), No. 123,051, U. S. National 

 Museum. Collected on Pulo Sebang, Rhio-Linga Archipelago, July 30, 

 1903, by Dr. W. L. Abbott, Original number, 2694. 



Diagnosis. — Like Tragulus pretiellus pretiellus of Bakong Island, but 

 back loss suffused with black and middle region of underparts less tinged 

 with huffy and never with any decided grizzle due to the presence of 

 black-tipped hairs. 



Measurements. — Type: head and body, 513; tail, 67; hind foot, 129 

 (125); condylobasal length of skull, 100.6; zygomatic breadth, 48.6; 

 mandible, 84.8; maxillary cheek-teeth (alveoli), 34.2; mandibular cheek- 

 teeth (alveoli), 39.6. 



Specimens examined. — Sixteen, all from Pulo Sebang. 



Remarks. — Though readily distinguishable from Tragulus pretiellus 

 pretiellus when both forms are considered as a whole, the Sebang animal 

 is not completely differentiated from thai of the nearbyisland of Bakong. 

 Of the sixteen specimens of parallelus eleven differ from all pretiellus in 

 the absence of a definite huffy area on middle region of underparts. 

 Of the nineteen specimens of pretiellus fifteen differ from all parallelus in 

 the presence of a noticeable blackish grizzle on buff of upperparts. Four- 

 teen -kin- of pretiellus show a heavy black suffusion on underparts, while 

 in three the suffusion is not conspicuous. Five skins of parallelus show a 

 heavy suffusion of black on underparts, while in thirteen it is not con- 

 spicuous. 



*1906. Tragulus pretiellus Miller, Proe. I". S. Xai. Mus., Vol. XXXI, p. 253, Sept. 11, 



1 i 



28— Proc. Biol. Soc. Wash., Vol. XXIV, 1911. (165) 





