432 



EMBALLONURIDiE. 



13. Nyctinomus johorensis. 



Molossus (Nyctinomus) joliorensis, Dobson, Proc. Asiat. Soc. Beng. 



Jan. 1873. 

 Nyctinomus joliorensis, Dobson, Moiiogr. Asiat. Chiropt. p. 1 83, fig. a 



(head) (1876); P. Z. S. 1876, p. 7i6. 



Ears as in N. plicatus ; but their inner margins are connected by 

 a band of integxiiuent which extends forwards on the muzzle as far 

 as a point placed midway between a line joining the eyes and the 

 extremity of the muzzle ; this connecting band is continued upwards 

 and backwards between the ears to a height of 0"-4, forming an 

 incomplete funnel open behind, wide below, and narrow above. At 

 a distance of about 0"'3 from the anterior connecting band the 

 ears are again connected by a second fold of integument posterior 

 and parallel to the first, about 0"-l in vertical height. Between 

 these two connecting folds of integument and the sides of the ears 

 a hoUow square is contained. This concavity is empty, and open 

 only from above. At the base of the funnel-shaped anterior 

 boundary a few long hairs exist, as in N. pumilus. Margin of the 

 ear-conch evenly convex above ; antitragus large, separated by a 

 deep notch ; tragus very small, quadrate, superior margin slightly 

 concave. 



The animals of this genus possess the power of folding the ear- 

 conch forwards, downwards, and outwards, thus closing the external 

 ear. In this species, therefore, when the ears are closed, the supe- 

 rior part of the funnel-shaped connecting band is drawn forwards, 

 disclosing the cavity behind. In the erect condition of the ears the 

 same funnel-shaped process is drawn backwards across this square 

 hollow cavity, which it covers, as the pitcher of Nepenthes is covered 

 by the leaf forming its Ud. In this position the extremity of the 

 funnel is flattened out, and lies in the space contained between the 

 posterior connecting band and the top of the head. 



The thumb is comparatively longer than in any other species of 

 the genus, and the wing-membrane is attached a short distance 

 below the knee-joint. 



Upper incisors separated by a very narrow interval in front; 

 lower incisors 4. 



Length, head and body 2"-8, tail l"-7, tail free from membrane 

 1", ear 0"-9, tfagus 0"-l, forearm l"-9, thumb 0"-5, third finger 3"-6, 

 fifth finger l"-8, tibia 0"-7, foot 0"-4. 



Eab. Malay PeninsiJa (Johore). 



This most remarkable species is as yet represented by a single 

 adult male specimen, preserved in alcohol, in the collection of the 

 Indian Museum, Calcutta. It was submitted to the writer's exami- 

 nation by Mr. J. Wood-Mason, who found it among a collection of 

 other objects of natural history sent to him by his private collector 

 from Johore, in the Malay Peninsula. 



