BANGS: CHIRIQUI MAMMALIA. 41 
Measurements — 
No. Sex. Total length. Tail vert. Hind foot. Ear, 
10,236 type Q old ad. 142 58 18 13 
10,235 ? old ad. 140 55 18 13 
10,237 2 old ad.t 140 aT) 18 13 
10,234 & old ad.} 125 10) 18 13 
10,238 @ ad. 125 55 18 13° 
Skull, type, old ad. 9, basal length, 20.2; occipitonasal length, 23 ; zygo- 
matic width, 12; mastoid width, 10.8; interorbital width, 4.6; length of 
nasals, 9; width of nasals, 2.8 ; length of palate, to palatal notch, 9.6; upper 
molar series, 4; length of single half of mandible, 12.8. 
Remarks. — Through the kindness of Dr. Merriam I was able to compare 
the series taken by Mr. Brown with a fine adult ¢, No. 76,353, of true A. 
teguina taken by Mr. E. W. Nelson at Ocuilapa, Chiapas, Mexico. This com- 
parison showed that the Chiriqui animal is quite distinct — though it is per- 
haps better to regard it as a subspecies. 
Mr. Brown caught all five of these curious dark brown little creatures, in 
open rocky places. 
Akodon xerampelinus,? sp. nov. 
Type. — Mus. Comp. Zoél., No. 10,240, old ad. g, Volcan de Chiriqui, May 26, 
1901. 10,300 feet. 
Three specimens, Volcan de Chiriqui, 10,300 feet. May and June. 
Characters. — Apparently specifically distinct from A. teguina. Size of that 
23. X 1f. 
Fies. 22 anp 23. Akodon xerampelinus. Type. 
species ; tail, longer; pelage very long and fluffy with but little lustre ; colors, 
paler — more yellowish, less reddish brown ; under parts grayish (strong cin- 
1 Teeth much worn. 
2 Xerampelinus, of the color of dry vine leaves. 
