236 Mrs. A. Arnbaek-Christie-Lincle on 



6. 2. 

 mm. mm. 



Length, ear, outer margin 16 



„ „ greatest breadth 8 



„ tragus, outer margin 8 



„ forearm 40 41 



3rd finger, metacai'pus 34 36 



„ first phalanx 12 18 



2nd phalanx 9 10 



4th finger, metacarpus 34 35 



„ 1st phalanx 11 



„ 2nd phalanx 8 



5th finger, metacarpus 33 



„ 1st phalanx 10 



„ 2nd phalanx 7 



Thumb, with claw 8 



Ijower leg 18 



Foot, with claws 11 



Other external clmracters. — Last tail-vertebra projects 

 leyond the membrane. The wing-membrane is attached to 

 the ankle. Calcaneum very long, reacliing about two-thirds 

 the distance from the ankle to the last tail-vertebra. 



Claws rather long. The interfemoral membrane forms an 

 acute angle in the centre of its margin behind. 



Affinities. — According to Dobson *, who in his Catalogue 

 has divided the genus Vespertilio [Myotis) into the two sub- 

 genera Leuconoe and Vesperti/io, Myotis taiwanensis should 

 be referred to the former subgenus. Among hitherto known 

 species it seems to be nearest allied to M. adversus, as Dobson 

 has described it {I. c), but differs from that species chiefly 

 with regard to the premolars, which agree with those of 

 M. dryas, a near ally of il/. adversus and lately described by 

 K. Andersen f- As regards the incisors, il/. taiwanensis 

 agrees with 31. adversus and not with M. dryas. 



Hah. Island of Formosa (Taiwan) . 



This species and Myotis formosus are, so far as I know, 

 the only species of Myotis hitherto recorded from Formosa. 



Pipistrellus ahramus, Temm. 



11 c?, 17 ?. Takao, Anping, Kagi, Formosa; May, 

 July, August, September, October, 1906-1907. 



Tiie collection contains both adult and young specimens, 

 varying somewhat in the colour of the fur, which may 



* G. E. Dobson, ' Catalogue of the Chiroptera in the British Museum ' 

 (Loudon, 1878). 



t Knud Andersen, ' Aunali d. Mus, Civ. d. Storia naturalu di Ounova,' 

 ser. 3, vol. iii. (1907). 



