NO. 2028. PHILIPPINE LAND MAMMALS— HOLLISTER. 321 



EPIMYS VIGORATUS, new species. 



Type. — From Mount Halcon, Mindoro (spur of main ridge at 4,500 

 feet). Adult male (teeth considerably worn), skin and skull, U. S. 

 National Museum No. 144637. Collected November 15, 1906, by 

 Dr. Edgar A. Mearns. Orig. No. 6306. 



Diagnosis. — Like Epimys todayensis of Mindanao, but larger, with 

 decidedly longer tail and hind foot. The largest member of the 

 concolor-epMppium group known from the Philippines. 



Color. — Almost precisely as in E. todayensis. 



STcull and, teeth. — The skull, compared with skulls of todayensis, is 

 somewhat larger; the anterior half of the skull is shortened and the 

 braincase is elongated; the outline of the supraorbital heads and 

 occiput, in adult skulls, is thus more ovate-pyriform than in today- 

 ensis. Teeth as in todayensis. 



Measurements of type, compared with measurements of the largest 

 adult male todayensis in the collection, the latter in parentheses: Total 

 length, 307 (285) mm.; tail vertebrae, 166 (130); hind foot, 32 (28). 

 Skull of type: Greatest length, 35.0; condylobasal length, 32.6; 

 palatal length, 18.7; nasals, 12.1; interorbital breadth, 5.4; breadth of 

 braincase, 14.4; upper tooth row, alveoli, 5.9; mandible, 19.5; lower 

 tooth row, alveoli, 5.4. 



Specimens. — Five, from localities as follows : Mindoro : Alag River, 

 1, (Mearns); Bulalacao, 2 (Mearns); Mount Halcon, 2, including the 

 type (Mearns). 



EPIMYS TODAYENSIS (Meams). 



Specimens. — Sixteen, from localities as follows: Mindanao: Cata- 

 gan, 8 (Mearns); Margo Sattibig, 1 (Mearns); "Mindanao," 1 (Steere); 

 Todaya, Mount Apo, 4, including the type (Mearns); Zamboanga, 2 

 (Mearns). 



The material from Zamboanga District is two poor for positive 

 determination, but apparently belongs here. It consists only of two 

 broken skulls from hawk stomachs and one alcoholic specimen in poor 

 condition. 



EPIMYS VULCANI (Meams). 



1905. Mus vulcani Mearns, Proc. U. S. Nat. Mus., vol. 28, p. 446. 

 1905. Mus vulcani apids Mearns, Proc. U. S. Nat. Mus., vol. 28, p. 447. 

 1912. Epimys vulcani vulcani and Epimys vulcani apicis Hollister, Philippine 

 Journ. Sci., vol. 7, sec. D, p. 30, February. 

 Specimens. — Nine, including the types of vulcani and apicis, from 

 Mindanao: Mount Apo (Mearns). 



After detail study of all the species in the group, many represented 

 by large series, the slight differences exhibited by the single specimen 

 designated as the type of apicis seem too slight, and probably of too 

 doubtful constancy, to recognize a form by name. 

 95278°— Pi-oc.N.M.vol.46— 13 21 



