NO. 21 FIFTY-ONE NEW MALAYAN MAMMALS — MILLER _' I 



DiagJiosis. — Similar to Epimys batamaiius (Lyon) but differing 

 externally in the shorter foot, longer tail and more yellowish color 

 (cheeks cream-buff and underparts cartridge-buff instead of a nearly 

 uniform pale drabby gray) ; skull with shorter rostrum, narrower 

 interorbital region and nearly paiallel-sided incisive foramina. 



Measurements. — Head and body, 140 (148) mm.;' tail, [59 1 129) ; 

 hind foot, 27 (32.5) ; hind foot without claws, 26 (31) ; condylo- 

 basal length of skull (teeth moderately worn), 31.4 (32.0) ; zygo- 

 matic breadth, 16.3 (16.0) ; interorbital constriction, 5.8 (6.3) ; oc- 

 cipital breadth, 13.5 (13.7) ; depth of braincase, 10.0 (9.5) ; nasal, 

 13.0 (11.6) ; length of rostrum from upper rim of antorbital fora- 

 men, 11.4; greatest breadth of rostrum, 6.2; diastema, 8.3 (9.2); 

 mandible, 18.8 (19.1) ; maxillary toothrow (alveoli), 6.0 (5.9) ; man- 

 dibular toothrow (alveoli), 5.7 (5.6). 



Specimens examined. — One adult and one young, both from the 

 type locality. 



EPIMYS GRACILIS, new species 



1892. Mus jcrdoni Thomas, Ann. Mus. Civ. Stor. Nat. Genova, ser. 2, vol. 10, 

 p. 939. (Not of Blyth.) 



Type. — Adult female (in alcohol), No. 101520, United States 

 National Museum. Collected on summit of Mount Mooleyit, north- 

 ern Tenasserim, by L. Fea. Received from Genoa Museum. 



Diagnosis. — Like Epimys lepidus but tail much longer; skull 

 with more slender rostrum. Distinguished from Epimys jcrdoni of 

 Sikkim, as described by Blyth, in very different size and proportions 

 (head and body about 150 instead of 100; tail 196-220 instead of 85 ; 

 hind foot about 32 instead of 22). 



Measurements. — Type: head and body, 145 mm.; tail, 200; hind 

 foot, 31 (30) ; ear from meatus, 19.5; condylobasal length of skull 

 (teeth moderately worn), 32.5; zygomatic breadth, 15.5; inter- 

 orbital constriction, 6.0; occipital breadth, 13.5; depth of brain- 

 case, 10.6; nasal, 13.6; length of rostrum from upper rim of antor- 

 bital foramen, 12.0; greatest breadth of rostrum, 5.9; diastema, 9.4; 

 mandible, 19.6; maxillary toothrow (alveoli), 6.1 ; mandibular tooth- 

 row (alveoli), 5.7. 



Specimens examined. — Two, both from the type locality. 



Remarks. — The relationships of this rat appear to be strictly with 

 the group including Epimys lepidus. E. balameusis and E. inas. 



1 .Measurements in parenthesis are those of the type of Epimys bullatus 

 (male with slightly less worn teeth). 



