4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 56 



blackish. A few white hairs at anterior base of ears and a larger 

 white patch immediately below ear. Ears dark seal brown with a 

 few silvery hairs on inside. Feet whitish. Lower parts pearl gray, 

 the hair basally slate gray except on chin, throat, and under lip, 

 which are white ; median line of belly buffy. Tail dusky brown all 

 around, essentially naked. 



Measurements. — Head and body, 68 mm.; tail, 78; hind foot, 17.5. 

 Skull: greatest length, 21; condylo-incisive length, 18.5; zygomatic 

 breadth, 11. 8; nasals, 7.5; diastema, 5; length of upper molar series, 

 3.1 ; condylo-incisive length of mandible, 12. 



This species is allied to nigrifrons, but is readily distinguishable 



by its lack of buffy under parts and whitish feet. The series of 



eight topotypes shows very little variation in the color of the under 



parts. 



DENDROMUS LINEATUS, new species 



Lado Tree Mouse 



Type from Rhino Camp, Lado Enclave; adult male, number 

 164816, U. S. Nat. Mus.; collected by J. Alden Loring, February i, 

 19 10; original number, 8921, 



Characters. — Size of jamesoni and coloration of ochropus, with 

 short ears and small skull and feet. 



Coloration. — Upper parts tawny ochraceous, lighter on the sides, 

 ochraceous where the color is well defined against the white of the 

 under parts; head lighter than body, ears darker umber-brown; a 

 wide black median stripe extending from the shoulders to the base 

 of the tail. Fore feet and under parts pure white, the hair white 

 to the roots. Tail bicolor, dusky brown above, white below. 



Measurements. — Head and body, 65 mm. ; tail, 87 ; hind foot, 

 16.5. Skull: greatest length, 20; basilar length, 14.5; condylo- 

 incisive length, 17.2; zygomatic breadth, 10; nasals, 7.2; diastema, 

 5 ; length of upper toothrow, 3.5 ; condylo-incisive length of mandi- 

 ble, 11. 5. 



Twelve topotypes are in the collection. This series shows great 

 variation in the distinctness of the black median dorsal stripe. In 

 seven of these it is well defined, but in the remaining five there are 

 all degrees of obsoleteness down to specimens which show only a 

 very faint trace. 



Dendromus jamesoni of the Transvaal seems to be a close ally of 

 this species, the chief differences separating the two forms being 

 the lesser zygomatic width of the skull and the smaller ear of the 



