﻿106 



NORTH AMERICAN FAUNA. 



1814. Aialaplia americana Raiinesque, Precis ties clecoiiv, somioL, p. 12 (nomen 



nudum).' 



1815. res2)crtUio riihra Ord, Gutlirie's Geography, 2d Am. ed., II, p. 291. 

 1818. Vespertilio fessclatits Rafinesque, Americau Monthly Mag\, III, p. 445. 

 1818. Vesp(i:riilio inonachns Rafinesqne, Am. Monthly Mag., Ill, p. 445. 



1820. Vesperiillo riifus Warden, Description des fitats-Unis de I'Amerique Septentrio- 

 nale, V, p. 606. 



1863. Lasiurns novedoracensis H. Allen, Monogr. N. Am. Bats, p. 15. 



1870. Lasiinvis funehris Fitzinger, Sitzuugsber. k. Akad. Wissensch. Wien, LXII, p. 46. 

 1878. Atalaplta novehoracensis Dobson, Catal. Chiroptera Brit. Mus., p. 269. 



1893. AtaJapha iiorehoracens'is H. Allen, Monogr. Bats N. Am., p. 142. 



1894. Atalaplia loreaUs Rhoads, American Naturalist, XXVIII, p. 523. 



Type locality, — Xew York. 



GeograpMc distribution. — The typical form of Lasiurus horealis ranges 

 tlirough the Boreal, Transition, and Austral zones in eastern Korth 

 America from Canada to Florida and Texas, west at least to Indian 

 Territory and Colorado. Southern and western limits of range not 

 known. Probably breeds throughout its known range. 



General characters. — Size small (forearm, 38 to 43; longest finger, 78 

 to 88) ; forearm with no distinct tuft of fur 

 near x^roximal end; color very variable, rang- 

 ing from bright yellowish red or fawn color to 

 yellowish gray; a whitish area in front of 

 shoulder. 



Ears. — The ears of typical Lasiurus horealis 

 (fig. 21a) when laid forward reach a little 

 more than halfway from angle of mouth to 

 nostril. The anterior border is strongly but 

 irregularly convex from free point of anterior 

 basal lobe to tip, a distance through which it forms almost a semicircle. 

 The posterior border is slightly concave immediately below tip, then 

 evenly convex to basal lobe. The convex portion of the outline of the 

 posterior border forms the arc of a circle with considerably longer radius 

 than that of the anterior border. Posterior basal lobe strongly devel- 

 oped and deeply notched on anterior border. Inner side of ear naked 

 except for a few scattered hairs, which are especially numerous along 

 anterior and posterior borders. Outer side densely furred throughout 

 basal two thirds, naked at tip. 



Tragus triangular in general outline. Anterior border straight from 

 base to slight concavity just below tip; posterior border straight from 

 tip to wddest point (opposite anterior base), where there is a strong 

 angle, below which the margin is straight to slightly developed basa' 

 lobe. 



Fig. 27.— Ear of (a) Lasiurus bore- 

 alts and (b) L. teliotis (x2). 



iRafinesque says: "J'ai observe cette espece [A. sicnla Raf.] en Sicile, elle differ' 

 de V Aialapha americana ( Vespertilio )iovehoracensis Lin.), autre espece du meme genre, 



IDar ses deux premiers et son dernier caractere.'^ 



