238 M, I. G. Saint-Hilaire on an American Bat. 



that it is dispersed over, and by no means rare in that country. 

 In fact, M. A. Saint-Hilaire, has not brought one or two only, 

 but eleven individuals of the species, with the respective localities 

 of each. These important memoranda inform us, that seven of 

 them were found in the missionary provinces, and the four others 

 in the district of Curityba. 



I may be thought too diiTuse on these particulars, and slow in 

 coming to the description of the new species ; I must, however, 

 observe that the principal object of my Memoir, is not the dis- 

 covery of a new species of Bat, but rather the discovery of a 

 species of Nyctinomus in America. For the rest, in comparing 

 the Nyctinomus from Brazil with that from Bengal, I have al- 

 ready given part of its characters, I shall now continue the de- 

 scription, always taking care to remark its principal relations to 

 the other Nyctinomi. 



I shall take no notice of the labial wrinkles, and the other 

 generic characters of the new Bat ; to say that it is a Nyctinomus, 

 is to say that it has them all. I shall only observe that its upper 

 lip, which is notched like that of all the other Nyctinomi, is 

 less deeply so than that of the Nyctinomus of Egypt, (Vespertilio 

 acetabulosus. Herm. Obs. Zool. p. 19. Vespertilio plicatus. Bu- 

 chanan) ; for the rest, this is another character common to it and 

 the Nyctinomus of Bengal, to which it is nearly allied by the 

 general assemblage of its relations. The Nyctinomus of Brazil, 

 is, very nearly, of the same size, as the Nyctinomi of Egypt and 

 Bengal. Its total length is very exactly 0-106 m. (4*173 inches, 

 English); the length of its body, is 0069 m. (2-716 English 

 inches); that of the tail, 0*037 m (1*456 English inches); and 

 its length from the extremity of one wing to that of the other, 

 0*285 m. (11*22 English inches). 



The hair, which is rather soft and thick, presents some varie- 

 ties of colour ; its base is always cinereous, with a shade of brown, 

 varying from black-brown to yellow-brown. In general terms, 

 we may say that the Nyctinomus of Brazil, is of a cinereous brown 

 colour ; its tint greyer and less deep towards the abdominal re- 

 gion, rather deeper towards the breast, and still deeper and 

 browner on the back. The hair which covers the internal part of 



