Vol. 34, pp. 67-76 March 31, 1921 * 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF SIXTEEN NEW MURINE RODENTS 



FROM CELEBES. 



BY GERRIT S. MILLER JR. AND N. HOLLISTER. 



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



Among the mammals which the generosity of Dr. W. L. Abbott 

 enabled Mr. H. C. Raven to collect in Celebes for the United 

 States National Museum we have found the following sixteen 

 forms which appear to have been not previously described. 



Echiothrix centrosa, sp. nov. 



Type from Winatoe (between Koelawi and Gimpoe), Middle Celebes. 

 No. 218,706, U. S. National Museum; skin and skull of adult d^ (teeth 

 moderately worn); collected January 9, 1917, by H. C. Raven; original 

 number 3077. 



Diagnosis. — Like Echiothrix leucura Gray, of North Celebes; but more 

 grayish, less buffy, in color; with more cream-buff, less yellowish, under- 

 parts and inner surfaces of limbs. Ears smaller; teeth smaller, the length 

 of entire upper tooth row about equal to that of first and second molars of 

 leucura. 



Measurements. — Type: Head and body, 215 mm.; tail, 265; hind foot, 

 53; ear from notch, dry, 29.4. Skull of type: Condylobasal length, 52.0; 

 zygomatic breadth, 23.6; palatal length, 29.5; breadth of braincase, 19.6; 

 interorbital breadth, 7.7; orbit to end of nasals, 25.2; mandible, 30.8; upper 

 tooth row, 6.4; lower tooth row, 6.7. 



Specimens examined. — Five, all from the interior of Middle Celebes; 

 Besoa, 1; Gimpoe, 2; Toware, Bada, 1 ; Winatoe, 1, the type. 



Remarks. — This form is like Echiothrix leucura of North Celebes in size 

 and proportions of the skin and skull; except that it has smaller ears and 

 smaller teeth. In color it is conspicuously different from a series of 

 leucura from Temboan, North Celebes; the yellowish-buff tints of leucura 

 are replaced by vinaceous-gray, especially noticeable on the flanks; and the 

 belly is a whitish cream-buff rather than deep yellowish-bu£f. 



Echiothrix brevicula, sp. nov. 



Type from Pinedapa (about 5 miles inland from the Gulf of Tomini, near 

 Mapane), Middle Celebes. No. 219,744, U. S. National Museum; skin 

 and skull of adult cf (teeth much worn); collected January 29, 1918, by 

 H. C. Raven; original number 3467. 



13— Proc. Biol. Soc. Wash., Vol. 34, 1921. (67) 



