72 Two Species of Plecotus. 



(Plecotus) Maugei of Porto Rico, is the only one which can 

 be suspected of any specific similarity with those we have here 

 described. But if it be in reality identical with one of ours, 

 the description at present extant must be both too inaccurate 

 and too incomplete to supersede the necessity of a new one. 



1. Plecotus lecontii. 

 Pi-ate III. Fig. 5. the head. 



Plecotus macrotis LC. in App. to Mc Murtric's Cuv. 1. p. 431. 

 Vespertilio Maugei, Desm. Mamm. p. 145? Idem Nou. Diet? 

 Plecotus Maugei, Is. Geoff. Mag. de Zool. 1832 ? 

 Longhaired Bat, Penn. Arct. Zool. 1. p. 1S4. Clayton in Phil. 

 Trans. 



Description. 



Color of the back dusky, terminated with light brown, ap- 

 pearing somewhat variegated if the hairs be disturbed, fur long, 

 soft and close. The remaining upper parts are naked, with 

 the exception of the base of ears behind, and their anterior 

 lower border, which is fringed with fine soft hairs, and a few 

 long fine hairs at the toe joints ; the membranous parts of a 

 uniform light brown like the back. The ears are larger than 

 the head, and half as broad as long, the auricle less than half 

 the length of the ears, narrow, sublinear, obtuse, and curving 

 slightly outward. The nose round, set with numerous fine 

 long hairs, and " a very large erect cristiform warty excrescence 

 on each side between the eyes and the nose." The under 

 side of the body clothed with fur, which is very dark dusky 

 at the base with very light gray tips, which predominate over 

 the dusky more and more downward until it becomes between 

 the legs almost a pure white. Tail slightly projecting beyond 

 the membrane. 



