PLECOTUS. 
113 
VESPERTILIONID^. 
Nostrils at the extremity of the snout, crescentic or circular; muzzle devoid of 
foliaceous appendages ; eyes minute; a tragus present. Two phalanges in the third 
digit of the manus. Interfemoral membrane ample, inclosing the entire tail, or with 
the last vertebra projecting beyond it. Premaxillee not forming a median palatal suture. 
Two to four upper incisors separated by a wide space in the mesial line, placed in pairs 
or singly against the canines. Upper premolars one to three on each side. When 
more than one upper premolar are present, the anterior is usually minute and often 
lies internal to the tooth-line. Either two or three lower premolars on each side. 
The members of this family are widely distributed over the tropical and temperate 
regions of the world. 
They are divided into two sections, viz., the Plecotine and Vespertilionine. 
Plecotine Section. 
This division is based on the common Long-eared Bat, Plecotus auritus. Ears very 
large, united at their bases across the forehead; nostrils lunate, with or without 
cornua. 
PLECOTUS. 
Plecotus, E. Geoffr. St.-Hil. Descr. de FEgypte, Hist. Nat. ii. 1818, p. 112. 
Forehead raised above the level of the face. Ears enormously elongated; external 
border of the ear arising shortly behind the angle of the mouth; a well-marked 
lobule directed forwards and outwards near the base of the inner border at the point 
of attachment of the transverse fold ; tragus very long ; a well-developed cup-shaped 
lobule at the base of the external margin of the tragus. Nostrils on the upper surface 
of the muzzle, lunate, each with a well-defined cornu. Groups of gland-masses on the 
snout not raised. The antibrachial membrane continuous from the shoulder to the 
base of the first digit of the manus. Wing-membrane rising from the side of the meta¬ 
tarsal of the first toe. Penis club-shaped, pointed, and with a bone. Lower incisors 
trifid. 
Dentition^: i. c. }, pm. |, m. | = 3G. 
Q 
