﻿50 



NORTH AMERICAN FAUNA. 



family (with the i)ossible exception of Uuderma, the only known skull 

 of Avhich is now lost). Ears very long, (PI. I, fig. 9), joined together 

 across forehead, and >Yith tragus free from external basal lobe. Kegion 

 between eye and nostril occuijied by a prominent thickened ridge which 

 terminates in a conspicuous club-shaped enlargement (fig. 7). First 

 l^halanx of third finger shorter than second (PI. Ill, fig. 2). 



General remarlcs. — Corynorhhms differs widely from the other known 

 American genera of Vesjyertilionulw, but somewhat closely resembles 

 the Old World Flecotus. From the latter it is separated by its ditfer- 



riG. ?. — Muzzles of [a) PlecotKS and {b) Corynorhinvs (X2). 



ently formed nostrils, conspicuously glandular muzzle, and differently 

 proportioned fingers (fig. 7, and PI. III. figs. 1 and 2). The genus is 

 represented by one species which may be divided into three subspecies, 

 differing from each other chiefly in color. All of these occur in the 

 United States. The material by which this genus is now represented 

 in collections is very unsatisfactory. 



KEY TO THE SUBSPECIES OF COEYNOKHrSTTS. 



Fur every where distinctly bicolor macrotis (p. 51) 



Fnr not distinctly bicolor. 



Color yellowish gray pallescens (p. 52) 



Color blackish brown iownsendii (p. 53) 



