Arrangement of the Cliiroptera. 347 



b"'. Tragus distinct ; premaxillary bones cartilaginous or 

 small, separated by a space in front. 



Nycteridae*. 



b". Nostrils opening by simple crescentic or circular aper- 

 tures at the extremity of the muzzle, not surrounded by 

 distinct foliaceous cutaneous appendages f; premaxillary 

 bones small, lateral, separated by a wide space in front ; 

 tragus distinct Vespertilionidae. 



B. Tail perforating the interfemoral membrane and appearing on its 



upper surface, or produced considerably beyond the truncated 



membrane J. 



b'. First phalanx of the middle finger folded (in repose) on the 



dorsal surface of the metacarpal bone §. 



c". Nostrils opening by simple circular or valvular apertures, 



not surrounded by foliaceous cutaneous appendages ; 



tragus distinct EmbaUonuridae||. 



b. Middle finger with three phalanges ; first phalanx of the middle 

 finger short; nostrils in the front part of the cutaneous 

 nasal appendages, or opening by simple apertures at the ex- 

 tremity of the muzzle ; chin with warts or erect cutaneous 

 ridges ; premaxillary bones well developed, united in front. 



Phyllostomidae. 



Synopsis of Subfamilies. 

 Rhinolophidse. 



t. Toes unequal, first toe with two, remaining toes with three pha- 

 langes each ; ilio-pcctineal spine not connected by bone with 

 the anteroinferior surface of the ilium . . Rhinolophinae. 



II. Toes equal, of two phalanges each ; ilio-pectineal spine united 

 by a bony isthmus with a process derived from the antero- 

 inferior surface of the ilium, forming a large preacetabular 

 foramen Phyllorhininae. 



Nycteridae. 



I. Nostrils at the bottom of a concavity on the extremity of the 



muzzle, concealed by the base of an erect cutaneous process ; 

 tail very short, in the base of the large interfemoral membrane ; 

 premaxillaries cartilaginous Megaderminae. 



II. Nostrils at the anterior extremity of a deep longitudinal facial 



groove ; tail long, produced to the hinder margin of the inter- 

 femoral membrane Nycterinae. 



* Nycteridae = Megaderniata, Peters (in part.), I. c. 

 t A rudimentary nose-leaf in Nyctophilia and in Antrozous. 

 \ In Macrotus, Macrophyllum, and Lonchorina alone the tail is con- 

 tained in the interfemoral membrane. 

 § Except in Noctilio and in Mystucina. 

 |i Emballonurid8e = Bracliyura et Moloasi, Peters, I. c. 



