LASIURUS. 



Fig. 88. Lasiurus borealiS. 

 No. 6620 Field Columbian Museum Coll. 



Skull twice nat. size. 



Incisors enlarged 7 times. 



rubellus^ Beauvois, Cat. Peale's Mus., 1796, p. 204. 

 rubra, Ord, Guthr. Geog., 2d Am. ed. 1815, 11, p. 291. 

 tesselatus, Rafin., Am. Month. Mag., 1818, iii, p. 445. 

 monachus, Rafin., Am. Month. Mag., 1818, iii, p. 445. 

 rufus. Warden, Desc. Etats Unis Am., Sept. 1820, v, p. 



606. 



funebris, Fitzin., Sitzun. K. Akad. Wiss. Wien, 1870, Ixii, 

 p. 46. 



Type locality. New York State. 



Geogr. Distr. Eastern North America from Canada to Florida, 

 Colorado, Indian Territory and Texas. 



Genl. Char. Size small, ears reaching half way between angle 

 of mouth and nostril; tragus triangular; wing membranes attached 

 to base of toes; no fur tuft at proximal end of forearm. Skull: 

 rostrum broad; zygomata spreading; teeth large. 



Color. Variable, ranging from yellowish red and fawn to yel- 

 lowish gray; in front of shoulders is a whitish space. 



Measurements. Total length, 103-110; tail vertebras, 47.55-52.7; 

 tibia, 18. 6-19. 6; foot, 7.4-7.9; forearm, 38.5-40.6; thumb, 6.3-7.3; 

 longest finger, 79.3-82.8; ear from meatus, lo-ii.g; width of ear, 

 g. 8-1 1.4; tragus, 6.5-7. 



