402 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.38. 



completely separated, deeply bilobate from behind, the first smaller, 

 simple, joined to second at middle; terete posteromedian lobe dis- 

 tinct not forming an island as in the type of />'. granti; m 2 essentially 

 like m,, except for absence of anterior lamina; tn 3 with two distinct 

 laminae, the first like thai of m 2 , the second elliptical in outline, with 

 no indication of reentrant angle on posterior border. 



Measurements. — Type: Head and body, 195 mm.; tail, 185; hind 

 foot (dry), 36; skull, condylobasal length, 42.2; zygomatic breadth, 

 23.0; interorbital constriction, 6.0; mastoid breadth, 15.4; greatest 

 depth of brain case, 12.4; nasal, 18.8; diastema, 12.2; mandible, 28.2; 

 maxillary tooth row (alveoli), 9.6; mandibular tooth row (alveoli), 

 9.8; width of crown of m 1 , 2.8; least width of bony palate, 2.8. 



Specimen examined. — The type. 



APOMYS BARDUS, new species. 



Type-specimen. -Adult male (skin and skull), Cat. No. 144582, 

 I'.S.X.M. Collected at summit of Mount Bliss, Mindanao (altitude 

 5,750 feet) May 28, 1906, by Dr. Edgar A. Mearns. Original number 

 6166. 



Diagnosis. — Size and general appearance as in the forms inhabiting 

 M.oint Apo, but skull differing noticeably in the much narrower, 

 less inflated brain case. 



Colo)\ — The color is so essentially like that of Apomys insignis 

 Mearns as to require no special description. 



Skull and teeth. — In general form the skull is much as in Apomys 

 insignis, but the brain case differs from that of all three of the forms 

 described from Mount Apo in its narrower more elongated form, the 

 greatest breadth contained about 21 times in upper length of skull 

 instead of about 2 \ times or less. Teeth with no special peculiarities. 



Measurements. Type: Head and body, 113 mm.: tail, 162; hind 

 toot (dry), 33. Average and extremes of six adults: Head and body, 

 L09 ('is US); tail, 156.3 (146 162); hind foot (dry), 31.4 (30-33). 

 Skull of type (teeth moderately worn): Condylobasal length, 28.8; 

 zygomatic breadth, 11.2; interorbital constriction, 4.8; breadth of 

 brain case over roots of zygomata, 13.2; depth of brain case at mid- 

 dle, 9.4; nasal, 11.8; diastema, 7.8; mandible, 16.8; maxillary tooth 

 row (alveoli), 5.8; mandibular tooth row (alveoli), 5.2. 



Specimens examined. Nine, all from the summil of Mount Bliss. 

 Other specimens from Grand Malindang (9,000 feet) are probably 

 referable to i be same form. 



APOMYS MAJOR, new species. 



Type-specimen. — Adult female (skin and skull), Cat. Xo. 151513, 

 U.S.N.M. Collected at 1 1 aights-in-t he-( )aks, Benguet, Luzon (alti- 

 tude 7,i)()() feci ), Augusl 2, L907, by Dr. Edgar A. Mearns. Original 

 number. ('>.">:; 1 . 



Proc l S. Nat. Mus., vol. 27, p. 159, May 13, 1905. 



