104 LOXCHERES. PROECHIMYS. 



undcrparts white; tail brown above, whitish beneath; hands and feet 

 whitish. Kx type in United States National Museum. 



.\fcii.sun-fncnls. Total length, 224; tail, 138; hind foot, 31. 

 Skull: Occipito-nasal length, 23.8; Hensel, 17.9; zygomatic width, 

 ii.j; intertemporal width, 4.5; width of braincase, 10; length of 

 nasals, 9.6; lengthof upper molar series, 3.4; length of mandible, 12.2: 

 length of lower molar scries, 3.4. 



Zapus luteus australis Bailey. 



Zapns lull-as aiislralis Bailey, Proc. Biol. Soc. Wash., XXVI, 



i9!3> P- i3 2 - 



Type locality. Socorro, New Mexico. 



Genl. Cli^r. Smaller and darker than Z. Intcus; skull narrower. 



Color. Upperparts pale buffy yellow, lined with black hairs, 

 black somewhat darker; dorsal area indistinctly marked; underparts 

 pure white", hands and feet white; heels dusky; tail brown above, 

 white beneath. Ex type in United States National Museum. 



Measurements. Total length, 205; tail, 124; hind foot, 29.5. 

 Skull: Occipito-nasal length, 21.8; Hensel, 16.5; zygomatic width, 

 10.7; intcrtemporal width, 4.2; length of nasals, 8; palatal length, 3.3; 

 length of upper molar series, 3.2; length of mandible, 10.8; length of 

 lower molar series, 3.4. Ex type in United States National Museum. 



Family Octodontidae. 



Subfamily Loncherinae. 



Genus Loncheres (101). 



Loncheres armatus (I. Gcoffroy). 



Nelomys armatus I. Geoffroy, Ann. Sci. Nat., X, Ser. 2, 1838, p. 125- 



Type locality. Cayenne, French Guiana. 



Geogr. Dislr. French Guiana; Island of Martinique, Lesser 

 Antilles. Type in Paris Museum. 



Genus Proechimys (102). 



Proechimys rubellus llollisier. 



Proechimys rubellus Hollistcr, Proc. Biol. Soc. Wash., XXVII,. 



iQ'4, P- 57- 

 Type locality. Angostura Valley, Costa Rica. 



