188 VESPEEIILIONID^. 



B. Base of the thumbs and soles of the feet 

 with broad adhesive cushions. 



0-. Crown of the head remarkably 

 flattened ; ears shorter than 

 the head ; tragus as in V. 

 mimitus; forearm l"'l 22. V, pachypus, p. 208. 



1. Vesperugo velatus. 



Plecotus velatus, Is. Geoffr. Ann. Sci. Nat. 1824, p. 446 ; Guerin, 

 Mag. Zool. pi. ii. (1832J ; Wagner, Suppl. Schreb. Saugeth. v. p. 717 

 (1855). 



Vespertilio velatus, Temminck, Monogr. Mammal, ii. p. 240(1835-41). 



Histiotus velatus, Gervais, Exped. du Comte de Castelnau, Zoologie, 

 p. 77 (1865) ; Feters, MB. Akad. Berl. 1875, p. 787. 



Ears very large, triangular, united at their bases posteriorly, as 

 in Plecotus ; base of the inner margin of the ear-conch straight, 

 rounded at junction with the ascending portion, forming a broadly 

 rounded slightly projecting lobe, which almost touches the corre- 

 sponding part of the opposite ear, ascending inner margin straight or 

 faintly convex, tip of the ear rounded, upper one fourth of the outer 

 margin slightly concave, remaining portion slightly convex ; tragus 

 as in Plecotus auritus, subacutely pointed and inclined outwards, inner 

 margin regularly and slightly convex, upper half of the outer margin 

 concave, lower half convex, a distinct rounded lobule at the base ; 

 nostrils simple, rather close together at the extremity of the muzzle ; 

 face bluntly conical ; crown of the head not raised above the face- 

 line; thumb short, with a strongly curved claw. 



Wings from the base of the toes ; postcalcaneal lobe small, shal- 

 low ; last two caudal vertebrae free. 



Pur, above and beneath, dark brown, the extremities of the hairs 

 slightly paler beneath. 



Teeth very similar to those of Vesperugo {Vesperus) serotinus. 

 The inner upper incisor on each side long and slightly notched near 

 the extremity, the outer incisor very short and close to the base of 

 the inner incisor ; lower incisors trifid, placed at right angles to the 

 direction of the jaws ; the single upper premolar close to the canine ; 

 first lower premolar in the tooth-row, nearly three fourths the size 

 of the second premolar. 



Length, head and body 2"-4, taU 2"-4, head 0"-8, ear l"-2, 

 tragus 0"'55, forearm 2", thumb 0"'4 ; third finger — metacarp. 1"'75, 

 1st ph. 0"*65, 2nd ph. 1" ; fourth finger — metacarp. l"-7, 1st ph. 

 0"-55, 2nd ph. 0"-5 ; fifth finger— metacarp. l"-7, 1st ph. 0"-5. 

 2nd ph. 0"-4 ; tibia 0"-8, foot 0"-45. 



(The above measurements have been taken from an adult female 

 specimen preserved in the Berlin Museum ; the type in the Paris 

 Museum is slightly smaller, and has a forearm 1"'8 long.) 



Hab. Brazil. 



