iso 
PROECHINOMYS 
404. semispinosus (/cc/imys!), Tomes, Proc, Zodl. Soc., 1860, p, 265 
SHORT-SPINED RAT 
ype locality Keuador 
Geogr, Dist Nicaragua south to Ecuador 
Genl, Ghar, Sige large; ears small; tail half as long as head and 
body; long and strong claws on hands and feet; spines short, flexible, 
confined to middle of back 
Cele Above mixed reddish brown and black: cheeks, sides of 
neck, and body paler; orbital ring black; under parts white; tail 
above black, beneath ashy brown: hands and feet ashy 
Weasurements Total length, 
brown 
370-400; tail vertebra, 140-160; 
hind foot, 47-55; ear, r8-rg, Skull: total length, 57; zygomatic 
breadth, 29; upper tooth row, 16; length of nasals, 21 
FiG. 72, PROECHINOMYS CENTRAL 
NX sas2 U.S. Nat. Mus, ( N 
#05. centralis hereomeyvs), Thomas, Ann. Ma 
XVIII SOO, p 
