Mr. R. F. Tomes on some new Vespertiliouidse. 339 



Natalus stramineus. Gray. 



Natalus stramineus. Gray, Mag. Zool. & Bot. ii. p. 49G ; Cat. Mam. 

 Brit. Mus. p. 28. 



The face is very hairy, particularly along the median ridge, and 

 on the upper lip, where it takes the form of a thick long moustache, 

 extending the whole length of the lip. This rises on each side over 

 the top of the nose, meeting in the middle, and forming a kind of 

 transverse ridge of hair. Immediately in front of the eye is a naked 

 space. The ears when held up to the light present a singular dotted 

 appearance, and resemble in this respect the Vesji. liajnllosiis of 

 Temminck. The extreme tip of the tail is exserted. 



The fur is of medium length and substance. On the upper parts, 

 of a uniform brownish-yellow ; on the under, the same but paler. 

 The membranes and naked parts are reddish-brown. 



The whole of the above has been taken, by the kind permission of 

 Dr. Gray, from the two examples mentioned in his Catalogue, and 

 the following are their dimensions. The first column refers to the 

 specimen in spirit from South America, and the second to the one 

 from St. Bias, North America. 



No. 1. No. 2. 



// /// // // 



Length of the head and body 1 9 IH, about. 



of the tail 2 2 2 0, nearly. 



of the head 9 7|- 



of the ears 5 4 



of the tragus 2 If 



Breadth of the ear 6 4f 



Length of the fore-arm , 1 b\ 1 4^ 



of the longest finger 3 2 9 



of the fourth finger 2 2 111 



of the thumb 2 2\ 



of the tibia 9^ 8 



of the foot 4 4 



Expanse, following the bones, of the wings 10 6 10 



Genus Hyonycteris, Licht. et Peters. 



Incisors four above, in pairs, separated by a space in the middle, 

 the apices bifid ; below, six, contiguous, trifid. Canines, distinct, 

 long, conical, surrounded by two rings or collars. Molars above and 

 below, six on each side, the upper anterior ones separate, the three 

 posterior ones close together and W-shaped. Tongue medium ; 

 snout elongated beyond the lips, with a discoid end (somewhat as in 

 Furipterus). Nostrils below, ensiform. Lips tumid, the margins 

 broadly reflected. Ears separate, broad, and furnished with tragus 

 and antitragus. Wing-membranes broad, extending the whole length 

 of the leg and foot, quite to the base of the nails. Interfemoral 

 membrane entire, completely enclosing the tail, the last joint only of 

 which is exserted. Thumb free, nailed, and with a broad suctorial 

 disk attached to it. Index finger very short, scarcelv a fourth as 



2:>* 



