216 Zoological Society : — 



great multiplicity of names. A large series has passed uuder review 

 whilst preparing this paper, and the most exact and rigorous exami- 

 nation, both externally and internally, has failed to afford any mate- 

 rial difference, beyond that of colour. 



I have already referred this to the effect of climate ; but it is 

 necessary to add, that the colour of the fur is so capricious, even in 

 the temperate parts of North America, that ^lajor Le Conte, when 

 describing specimens from the vicinity of Philadelphia, found the 

 varieties so perplexing, that he could give no very definite description. 



However, it may be stated, that geyierally the North American 

 examples are some mixture of brown or rufous, thickly sprinkled 

 with white, giving a hoary appearance ; whilst those from Tropical 

 America are almost uniformly of a bright ferruginous hue, without 

 any mixture of white. 



1. Lasiurus noveboracensis, Erxl. 



Vespertilio noveboracensis, Erxl. Syst. Reg. Anim. p. 155, 1/77 ; 

 Harl. Faun. Amer. p. 20, 1825 ; Godm. Amer. Nat. Hist. i. p. 50, 

 1826; Fisch. Svnop. Mam. p. 114, 1829 ; Coop. Ann. Lye. N. H. 

 New York, iv. p. 57, 1837 ; Le Conte, Proc. Acad. Nat. Sci. Philad. 

 1855. 



New York Bat, Penn. Arct. Zool. p. 184, 1792; Synop. Quad, 

 p. 367, 1771. 



Vespertilio rnbellus, Palisot de Beauvois, Cat. Peale's Mus. 1796. 



Vespertilio lasiurus, Linn. edit. Gmel. 1788; Schreib. Saugt. 

 1826 ; Geoff. Ann. du Mus. viii. p. 200, 1806 ; Desm. Mam. p. 142, 

 1820 ; Fisch. Synop. Mam. p. 109, 1829. 



Vespertilio Blosseivillii, Less, et Garn. Bull, des Sci. Nat. viii. 

 p. 95 ; Fisch. Synop. Mam. p. 110, 1829. 



Vespertilio Bonariensis, Less. Voy. de la Coquille, 1829. 



Vespertilio villosissimus, Geoff. Ann. du Mus. viii. p. 478, 1806 ; 

 Desm. Mam. p. 143, 1820; Fisch. Synop. Mam. p. 110, 1829; 

 Rengg. Saugt. von Parag. p. 83, 1830 ; \A'agn. Supp. Schreib. Saugt. 

 i. p. 536, 1840. 



Vespertilio monachv.s et V. tessellatus, Raf. ? 



Nycticejus noveboracensis, Temm. Mon. ii. p. 158, 1835-41 ; 

 Wagn. Supp. Schreib. Siiugt. i. p. 546, 1840 ; Schinz, Synop. Mam. 

 i. p. 199, 1844. 



Nyct. varius, Poep. Reise in Chili, i. p. 451, 1835 ; Wagn. Supp. 

 Schreib. Saugt. i. p. 547, 1840. 



Nyct. Atalapha, Raf. ? 



Atalapha Americana, Raf. Prin. de Som. ? ; Desm. Mam. p. 147, 

 1820. 



Chauve-souris septihne, Azara. 



Lasiurus rufus. Gray, Cat. Mam. B.M. 1843 ; Gosse, Nat. So- 

 journ. Jamaica, p. 280, 1851. 



The muzzle is of very moderate length and substance, and rather 

 pointed ; the nostrils are rather small, near together, and directed 



