DESCRIPTIONS OF TWO NEW GENERA AND SIXTEEN 

 NEW SPECIES OF MAMMALS FROM THE PHILIPPINE 

 ISLANDS. 



By Gerrit S. Miller, Jr., 



Curator, Division of Mammals, !'. S. National Museum. 



Of the sixteen new Philippine mammals described in this paper, 

 thirteen are contained in a large collection made by Dr. Edgar A. 

 Me arns during the years 1905 to 1007, and now in the United States 

 National Museum. The three others form part of a collection sub- 

 mitted to me for determination by the authorities of the Philippine 

 Bureau of Science. 



CROCIDURA HALCONUS, new species. 



Type-specimen. — Young adult female (skin and skull), Cat. No. 

 144652, U.S.N.M. Collected on spur of main ridge of Mount Halcon, 

 Mindoro (altitude 6,300 feet), November IS, 1906, by Dr. Edgar A. 

 Mearns. Original number, 6316. 



Diagnosis. — Like Crocidura grayi Dobson of Luzon, but with 

 unicuspid teeth much more contrasted in size. 



Color. — Entire animal dark sepia, blackening on posterior half of 

 back, the underparts tinged with broccoli-brown; feet and tail black- 

 ish, the long hairs on tail a slightly contrasted brown. 



Skull. — The skull does not differ appreciably from that of Crocidura 

 grayi, though the interorbital region seems inclined to be narrower 

 and the braincase less deepened than in the Luzon animal. The size 

 and general appearance of the skull is also very similar to that of the 

 European Crocidura russula; but the Philippine species are at once 

 distinguishable from russula and its near allies by their greater depth 

 of skull, a difference readily appreciable when the braincases are com- 

 pared in posterior view. 



'/'<<th. — On comparison of specimens of Crocidura grayi and C. 

 halconus wit h perfectly unworn teeth it is immediately seen thai there 

 is much more conl cast in size among the upper unicuspids of the Min- 

 doro animal. This appears to be due to a slight increase in the size of 

 the first and a reduction in the size of the second, the third remaining 

 unchanged. Though especially noticeable in lateral view, these pecul- 



Proceedings U. S. National Museum, Vol. 38— No. 1757. 



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